Have you heard the intriguing story of a monkey and Yorkshire puddings? In 2024, a macaque monkey made headlines by escaping from a wildlife park in the Scottish Highlands.
This adventurous monkey feasted on peanuts and stale Yorkshire puddings meant for birds, evading capture for five days until it was spotted in a local garden.
According to a recent analysis by the Washington Post, primates like Honshu are among the most likely animals to escape from captivity. Their study reviewed 130 years of news reports, revealing 134 escape incidents, with 17 involving monkeys and apes. Interestingly, in 2024 alone, 43 rhesus macaques escaped from a research facility in South Carolina, US.
These primates exhibit extraordinary intelligence and dexterity, facilitating their escapes not just from cages but from entire zoo and park grounds, similar to the wild on mainland Japan.
Other frequent escapees include felines (16 cases), bovids (15 cases, including cows and buffalo), and birds (14 cases). Birds, particularly, pose a challenge for recapturing. A 2015 analysis of Australian zoo records spanning from 1870 to 2010 revealed that nearly half of all vertebrate escapes involved birds, which also had the lowest recovery rates.
In the UK, government regulations mandate that zoos conduct escape drills four times a year – Image courtesy of Robin Boyden
The famous flamingo known as Pink Floyd serves as a remarkable avian escape artist. This flamingo flew the coop from the Sedgwick County Zoo in Kansas in 2005, adeptly adjusting to life in the wild. It was last observed in 2023 off the Texas coast, over 800 miles from its original home.
Zoo escapes often ignite the public’s imagination. The narrative of a daring animal seeking liberation mirrors an underdog tale, reminiscent of the classic film Shawshank Redemption.
These animal escapades, while amusing, can mask serious challenges. An escaped animal may experience distress or danger, especially if it’s a non-native species that threatens the local ecosystem.
While tranquilizer darts are often used to sedate escaped animals, those posing a threat in public areas can be shot.
Zoos are equipped with emergency protocols for such incidents. For instance, in the UK, government guidelines require zoos to perform at least four escape drills annually, including scenarios involving dangerous animals.
Fortuitously, Honshu was safely recaptured. He moved to Edinburgh Zoo for a fresh start and is reportedly establishing alpha male status among his troop. One can only hope his new home offers an endless supply of Yorkshire puddings.
This article explores the question, “Which animals are most likely to escape from zoos?” posed by Chloe Reynolds from Bath.
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Recent research spanning five continents, from the steppes of Mongolia to the rainforests of the Pacific, reveals that hunting dogs and their owners share a remarkable bond. This study suggests that their cooperative relationship dates back approximately 30,000 years, highlighting deep evolutionary ties.
Examples of hunting dogs and human interaction across four non-WEIRD societies: (a) pointing in Mongolia, (b) problem-solving in Vanuatu, (c) demonstration in Mongolia, and (d) scenarios from Madagascar and Peru. Image credit: Bräuer et al., doi: 10.1038/s41598-026-57657-1.
Over the last 25 years, domestic dogs have increasingly become a significant focus of scientific research.
Throughout domestication, dogs have developed human-like communication skills essential for thriving in human environments.
Specifically, dogs excel in social communication, responding adeptly to human gestures and language. Their selection as cooperative partners during domestication has played a vital role in this evolution.
Extensive studies have examined dogs’ communication proficiency, including their response to human pointing, social referencing, and problem-solving abilities.
However, most findings have predominantly emerged from studies involving dogs from “WEIRD” (Western, Educated, Industrialized, Wealthy, Democratic) societies.
Dr. Julian Breuer, a cognitive psychologist at the University of Jena, emphasized the focus of their field study on hunting dogs, which necessitate deep collaboration between humans and their furry companions.
“This cooperation might have been critical in the domestication of dogs, marking them as the first domesticated animals in history,” noted Dr. Breuer.
To explore whether the dog-human bond is universal or influenced by culture, Dr. Breuer and his team assessed 164 dog-human pairs across culturally rich regions: Germany, Madagascar, Mongolia, Peru, and Vanuatu.
Standardized behavioral tests were performed to evaluate communication and cooperation between dogs and humans.
Remarkably, the findings revealed a strikingly similar relationship worldwide, indicating its roots in shared evolutionary history rather than cultural differences.
Across all regions, dogs demonstrated an understanding of human gestures, communicated actively with their owners, and relied significantly on their owners’ guidance in challenging situations.
Additionally, dog owners consistently described their pets as trusted companions, valuing their presence beyond mere working animals.
“While we anticipated notable cultural differences, we found the human-dog relationship to be surprisingly universal,” stated Dr. Breuer.
Despite these similarities, variations emerged, primarily influenced by environmental conditions and hunting methodologies.
For instance, hunters in Vanuatu displayed superior skills in interpreting dog signals compared to their counterparts in other regions.
In the South Pacific islands, dogs play a crucial role in tracking wild boars through thick underbrush, necessitating high levels of human-animal coordination.
Conversely, in Germany, dogs appear to be more reliant on their owners, responding consistently to signals likely due to more focused training approaches.
“Despite significant cultural and environmental contrasts, the relationship between dogs and humans is notably similar,” concluded the researchers.
Residual differences may arise from variations in hunting techniques and distinctions between queer and non-queer societies.
The findings of this research were published in a paper in the journal Scientific Reports.
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J. Breuer et al. 2026. Global similarities in dog-human interactions. Scientific Reports 16, 18527; doi: 10.1038/s41598-026-57657-1
Exploring the Arctic Dome Crater Landscape in Western Australia
Credit: Curtin University
According to mineral dating techniques, a colossal crater in Western Australia was formed by an asteroid impact approximately 3 billion years ago. This discovery potentially marks the crater as the oldest impact site on Earth, although its age has been contested by some researchers.
Known as the Arctic Dome Crater or the Miralga Impact Structure, this feature was first documented by Chris Kirkland in 2025 at Curtin University in Perth. His team estimated the crater’s diameter could reach up to 100 kilometers.
Kirkland and his colleagues found a unique layer of rock featuring cone-shaped formations known as shatter cones, typically created by significant impacts like asteroid collisions. While their initial research did not directly date this rock layer, correlations with age-dated rocks in adjacent layers led them to propose an age of 3.47 billion years.
This proposed age surpasses the Yarrababa Crater’s age by over 1.2 billion years, establishing it as the oldest known impact site on Earth. Furthermore, it stands out as the only recognized impact structure from the Archean Era, a time when Earth predominantly existed as a vast ocean.
However, a competing analysis from another research team led by Aaron Cavosie at Curtin University disputes this 3.47 billion-year timeline, claiming that their findings suggest the impact occurred around 2.77 billion years ago.
In a new development, Kirkland and his team assert that they have accurately dated recrystallized minerals, including detrital cones at the crater site. Kirkland states, “We’ve now examined the rock to identify minerals that directly correspond to impacts, rather than relying solely on correlations.”
Utilizing the decay rate of uranium to lead, the researchers dated zircon within the shatter cone formed by the asteroid’s impact. They also dated apatite minerals believed to have developed in hydrothermal systems activated by impact-induced heat.
Both the apatite and zircon dated at approximately 3.02 billion years, providing strong evidence of intense hydrothermal activity in the rock around 3 billion years ago. Kirkland notes, “This indicates that hot water infiltrated the rock long ago, showcasing an unusual heating and recrystallization process.”
Rocks Within the Arctic Dome Crater
Credit: Curtin University
Kirkland emphasized that other geological processes, such as mountain building or localized metamorphism, cannot adequately explain the mineral changes observed in the shocked rocks. He states, “The only process strongly correlated with these mineralogical transformations is an impact.” He concludes, “The current evidence strongly supports a 3 billion-year-old impact, potentially marking this as the oldest impact crater on Earth.”
Kavosie appreciates the new adjustments to the crater’s age, arguing, however, that Kirkland’s team continues to overstate its age. “We are grateful that they have revised their previous claim of a 3.5 billion-year impact, but believe they still lack a convincing case for the 3.02 billion-year hypothesis,” he adds, “This is how science progressively edges closer to the truth.”
Kavosie asserts that younger rocks, dating back only 2.77 billion years, exhibit shatter cones, indicating that the impact must have occurred after this point.
Alec Brenner, a Yale University professor and participant in the opposing study, concurs with Cavosie, stating the rocks must be younger than 2.77 billion years. “The new research disregards this finding based on the premise that these rocks are undated, yet they are directly linked to dated nearby rocks,” Brenner explains.
The key distinction, according to Kirkland, is that his team has calculated the ages of minerals within the impacted rock. “The argument for a younger age relies on a long-range correlation of undated rocks through satellite mapping, rather than on direct geochemical evidence or geochronology,” he states. “We now possess two mineral clocks of the same age sourced from the impact rock itself, emphasizing the importance of direct dating.”
A newly discovered genus and species of the four-winged Penaraptor dinosaur, which thrived during the Early Cretaceous period in northern China, offers fresh insights into the evolution of birds from their dinosaur ancestors, according to paleontologist Dr. Xin Shu from the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences.
Changzhou Saurus sinensis. Image credit: Connor Ashbridge / CC BY 4.0.
The recently identified dinosaur species existed in what is now China approximately 120 million years ago, during the Early Cretaceous period.
Scientifically named Changzhou Saurus sinensis, this remarkable creature measured about 34 cm (13 inches) in length, making it one of the smallest known non-avian theropods.
Despite its diminutive size, Changzhou Saurus sinensis displayed a combination of anatomical features found across various branches of the bird-like dinosaur family tree.
It is believed that Changzhou Saurus sinensis represents early members of the Deinonychosaurus lineage, a subset of pennaraptor dinosaurs that includes both dromaeosaurs and troodontids.
“The Penaraptoridae family comprises several recently discovered smaller clades (such as Unenlaginae, Microraptoridae, Scansoliopteridae, Anchiornitidae, and Halskaraptrinae) along with four established major groups (Oviraptorosauridae, Dromaeosauridae, Troodontidae, and Ornithidae),” Xu stated in the study.
“In the past three decades, significant fossil discoveries from newly recognized minor clades as well as well-established major pennalaptorian groups have effectively bridged the morphological gap among major pennalaptorian lineages, provided the oldest known fossil record of feathers, shown the earliest examples of theropod flight, revealed unexpected morphological and ecological adaptations, and demonstrated the rapid dispersal of pennaraptorans during the mid-Jurassic period.”
“Remarkably, these fossils significantly enhance our understanding of bird origins, indicating that plumed feathers, aerodynamic behavior, and other characteristics once thought exclusive to birds are also present in other pennaraptoran groups.”
“Nevertheless, many critical questions remain unanswered, particularly those pertaining to the reconstruction of phylogenetic relationships, behaviors, and ecological characteristics of penalaraptors, as well as the interpretation of individual morphological traits.”
Holotype specimen of Changzhou Saurus sinensis slabs and counterslabs. Image credit: Xing Xu, doi: 10.19615/j.cnki.2096-9899.260616.
The fossilized remains of Changzhou Saurus sinensis were unearthed in the Jiufodang Formation located in the fossil-rich western Liaoning Province.
This specimen, preserved in slabs and counterslabs, represents an almost complete skeleton, featuring extensive feathers across its body.
Changzhou Saurus sinensis boasted about 16 elongated tail feathers, approximately four times the length of its femur, akin to the ornamental tail feathers seen in peacocks.
This dinosaur also possessed unusually large wings, with primary flight feathers measuring around 12 cm (4.7 inches) in length, considerably exceeding those of other known non-avian penaraptornids.
This discovery implies that the development of feathered wing areas and arm lengths may not have occurred simultaneously, challenging previously held notions about the evolution of flight-related structures.
Notably, the legs featured large feathers, reinforcing evidence that some bird-like dinosaurs had a unique four-winged body plan.
“This finding underscores the intricate nature of early penaraptornian evolution and raises several theoretical and methodological questions in penalaptorian research,” Dr. Xu remarked in the study.
“These questions pertain to how to establish a robust Penaraptorian phylogeny, infer the aerial behavior and ecological habitats of early-diverging Penaraptornians, and accurately define plumage and birds.”
Shin Shu. 2026. A new feathered dinosaur from northern China dating back to the Early Cretaceous. This research highlights the complexities of early Penaraptornian evolution and discusses several related conceptual and methodological challenges. Spinal Paralysis in press. doi: 10.19615/j.cnki.2096-9899.260616
Pregnancy brings significant changes: hormonal surges, physical growth, and increased appetite are just the beginning. Previously, it was believed these changes resolved quickly postpartum, restoring the body and mind to pre-pregnancy states. Recent research has shown this is far from the truth.
Inside the skull, the brain experiences extensive remodeling during pregnancy, enhancing a mother’s caregiving abilities. Notably, many of these transformations can be long-lasting or even permanent. Fathers, too, undergo cognitive alterations as they embrace parenthood. According to Emily Jacobs, a neuroscience professor at the University of California, Santa Barbara, “Very few areas of the brain remain untouched.”
The prevailing understanding of the parental brain has evolved dramatically over the last decade. Once viewed merely as a state of disarray—“mother’s brain”—characterized by forgetfulness and sleep deprivation, it is now recognized as a complex network of adaptations that enhance everything from empathy to memory and even Alzheimer’s risk.
Beginning in early pregnancy, changes in gray matter—the brain’s neural connectivity fabric—start. Shrinking regions indicate a fine-tuning of brain functions rather than damage. Jacobs compares this to Michelangelo’s approach in sculpting: removing excess to reveal intrinsic beauty.
These neural changes profoundly affect how mothers connect with their infants, enhancing the ability to respond to child cues. The greater the brain’s adaptability, the stronger the maternal bond. “Instead of impairing function, the brain becomes more specialized,” explains Lauren Mahoney, a psychologist at the City University of New York. “It prioritizes information crucial for caregiving, threat detection, and emotional insights.” New mothers may misplace their keys but often become keenly aware of subtle changes in their baby’s demeanor.
Current studies by Jacobs and colleagues are evaluating the brains of both first-time and seasoned mothers, alongside fathers and those without prior pregnancy experience. Unpublished findings revealed that 97% of the observed 400 brain regions in first-time mothers underwent notable alterations, while second-time mothers exhibited fewer changes, only partially reverting postpartum.
These discoveries reshape how we comprehend motherhood. “The antiquated view of the ‘mommy brain’ as dysfunctional is debunked,” states Jacobs, illustrating that the maternal brain is adaptable and continuously evolving.
Furthermore, emerging evidence indicates that fathers also experience similar neurological shifts upon assuming parental roles. Like mothers, they show decreased gray matter volume post-birth, which correlates with more attentive caregiving behaviors characterized by sensitivity and nurturing touch. Interestingly, paternal brain activity becomes increasingly similar to that of mothers with hands-on childcare involvement.
The Impact of Parenting on Fathers’ Brains
GFC Collection/Alamy
Notably, most research so far has primarily involved heterosexual couples, leaving questions about the brain changes in same-sex couples and non-binary parents unanswered.
The permanence of these brain changes is also uncertain; however, evidence suggests longevity. A 2021 study indicated that pregnancy-related gray matter loss persists six years postpartum. Additionally, neuroscientist Edwina Orchard from the Ann S. Bowers Women’s Brain Health Initiative has found that certain brain structures transform during pregnancy and early parenting. Research shows that differences between parents and non-parents can still be observed in their 70s, indicating some changes may endure for a lifetime.
Importantly, parental brain transformations are linked to enhancements in cognitive function. Studies demonstrate that mothers exhibit superior attention and “executive function”—the brain’s ability to manage tasks—compared to childless women. Such capabilities are crucial for multitasking, whether cooking, managing children’s behaviors, or organizing the home environment.
Cognitive Resilience Against Aging
The challenges of parenting can foster a “cognitive reserve,” enhancing the brain’s resilience to injury and cognitive decline later on.
Raising children is inherently demanding, involving increased responsibilities, acquiring new skills, and juggling numerous priorities, all while coping with limited resources and sleep deprivation. This sustained cognitive engagement may create robust neural networks akin to learning a second language or mastering an instrument, potentially lowering dementia risk.
While demonstrating this connection in humans is complex—due to genetics, socioeconomic factors, and lifestyle choices—the evidence remains intriguing. For instance, Orchard’s study on maternal brain activity in later life revealed that women with more children exhibit brain activity patterns associated with youth. Orchard posits this signifies an ongoing benefit of motherhood contributing to lifetime cognitive reserve.
Parenting: Continuous Cognitive Training
plainpicture/LaSalle, Benedict
In a 2025 study involving nearly 28,000 participants, led by Orchard, both mothers and fathers displayed younger brain characteristics in middle and later life compared to their childless peers. This suggests that the impact of parenthood extends beyond pregnancy and may positively influence overall brain health.
However, certain nuances must be considered, including genetics, which might predispose individuals to reproduce and experience these brain changes. Interestingly, some research indicates a U-shaped relationship exists between the number of children and dementia risk, as stated by sociologist Mieke Thomeer from the University of Alabama at Birmingham. The greatest risks seem associated with childlessness or having many children (typically four or more), although conflicting findings exist.
This variance results from diverse definitions of cognitive decline and the types of populations studied, according to Thomeer. When her studies accounted for these variables, many connections vanished. She summarized, “Multiple childhood and developmental factors influence whether someone becomes a parent, how many children they have, and their cognitive health later in life.”
Trends may shift across generations. Recent findings presented at the Society for Cognitive Aging conference indicated that in newer birth cohorts, being childless correlates with improved cognitive health in later years.
Thomeer speculates this trend may reflect changing socioeconomic factors, as women without children today are often more educated than in previous generations, potentially indicating unique modern parenting stressors.
Biologically, parenting may also influence brain aging. Fetal cells cross the placenta and integrate into the mother’s body, including her brain—a phenomenon known as microchimerism. These cells may transform into neurons and immune cells, possibly aiding brain repair. A 2012 study suggested that women with Alzheimer’s exhibited fewer male cells, likely from their sons, in their brains, hinting at protective benefits.
The quest to decode the parental brain continues. While having children may not guarantee dementia prevention, and cognitive decline is a complex biological issue needing attention, becoming a parent enhances empathy, multitasking abilities, and quite possibly cognitive reserve. Ultimately, children leave lasting imprints not only on homes and routines but also on the brain itself.
The teeth of prominent Mayans were extracted and stored in caves well away from their burial sites. This act may have been a way to venerate ancestors or ensure their safe passage to the underworld.
During the Classic period (250-900 CE), Maya civilizations flourished across present-day southern Mexico, Guatemala, Belize, and northern Honduras. While they communicated in various languages, they shared a unified political and religious framework that emphasized lineage and ritual legitimacy. Consequently, the deceased held significant importance, with living family members often keeping the remains of ancestors within their homes, either beneath the floor or within the walls.
Esther Brielle and her team from Harvard University analyzed remains from various burial sites in Belize during the Classic period to trace familial connections among those interred. They successfully extracted genomic data from hundreds of samples and employed radiocarbon dating to ascertain the lifespan of each individual.
The investigation uncovered that 341 samples corresponded to 107 distinct individuals, while skeletal elements of 24 of those individuals were located in two separate locations. These sites included tombs situated in the plaza beneath the Mayan dwelling known as Mukrebal Tzul, and Batub Cave, located 26.5 kilometers away across the Maya Mountains.
Within the cave, a total of 226 teeth belonging to at least 24 individuals were discovered arranged near the remains of adult women. One particular individual had her head replaced by a vessel containing a jade bead. Fragments of a skull, possibly belonging to her, and a toothless mandible were found close to her pelvis alongside a large assortment of teeth and an inverted bowl containing five cocoa seeds. An ornate orange bowl adorned with mythical hummingbird and snake motifs sat nearby.
Genome analysis indicates this woman was an ancestor of individuals interred in elite tombs. Collections of grave goods suggest her association with the royal lineage, as noted by Brielle and her colleagues, who opted not to comment further.
The researchers suggest that other members of high society might have feigned ancestral connections to bolster their status. “They may have linked themselves biologically or ideologically to their ancestors to legitimize their power,” states Mirco de Tomassi from Ludwig-Maximilians-University in Munich, Germany.
Genomic evidence reveals that only elite members of Mukrebal society deposited teeth within the cave.
“Caves were considered sacred spaces as they served as entrances to the underworld, Xibalba,” asserts Angelina Locker from Vanderbilt University in Nashville, Tennessee. She speculates that elite individuals might have been the only ones permitted to enter this “mouth” of the underworld, a proposed site for spiritual communication and connection to the supernatural forces that the Maya believed animated their world.
Locker further posits that upper-class members may have visited the caves to honor their ancestors and confirm their safe arrival in Xibalba. Her research elaborates on how the Maya viewed the body as divided into four components, one of which exists in the mouth and symbolizes the soul’s breath.
Asta Land, a professor at Nicolaus Copernicus University in Toruń, Poland, remarked that teeth may have been selected due to their resilience, as they held significant cultural importance within Maya society. Dental modifications were common, and individuals would either repair or embed jewels in their teeth. “We believe a portion of the teeth may have come from burial sites, but it’s also feasible they were extracted during one’s lifetime,” she added.
Rocker concluded that the teeth hold symbolic significance related to corn kernels and the idea of rebirth. “This may have represented a way for the Maya to extract a tooth and plant it in Xibalba’s mouth to facilitate that person’s rebirth,” she said.
Regardless of the reasons behind the teeth’s deposition, it likely required several days of arduous travel through challenging terrain to reach the cave. De Tomassi likens this to Mayan pilgrimage practices, such as visiting sacred cenotes to leave offerings at Chichen Itza in Mexico.
As Europe battles a severe heat wave, keeping cool is critical for survival. Many individuals rely on fans instead of air conditioning, but it’s essential to recognize that at extreme temperatures, fans can transition from cooling to warming your body.
How hot is too hot? The British government cautions that fans may not prevent heat-related illnesses above 35°C (95°F), while the World Health Organization states that the shift from cooling to heating occurs at 40°C (104°F). Some studies suggest varying thresholds, but various factors complicate the situation.
Importantly, as you age, your ability to sweat diminishes, causing fans to become less effective at lower temperatures than they do for younger individuals. You can counteract this by spraying yourself with water or dampening your clothes.
In the shade, typical skin temperature ranges from 35°C to 37°C (99°F). When the air temperature is lower than this, heat is dissipated into the air, promoting cooling. Conversely, when the air temperature exceeds skin temperature, heat is absorbed from the air. Using a fan accelerates this heat transfer.
Historically, it was believed that 35°C was the temperature where fans ceased their cooling effects, according to George Havenith, Loughborough University. However, this figure overlooks the benefits of evaporative cooling.
When water evaporates, it efficiently removes heat from the skin, helping keep you cool even when the air temperature is higher than your skin temperature. However, in overly dry or humid conditions, a fan may not effectively cool your skin.
In dry heat, sweat evaporates quickly, and a fan’s airflow can actually transfer more heat to your skin. Research indicates that at 15% humidity and 45°C, turning on a fan may increase discomfort.
Conversely, elevated humidity can slow evaporation, which affects the cooling efficiency of a fan. When sweat drips, it indicates that it’s coming out faster than it can evaporate, making a fan useful in such conditions, up to around 60% humidity and 38°C.
As humidity levels rise further, evaporation slows down, diminishing the fan’s effectiveness.
“Humidity plays a significant role,” Hebnis explains. “That’s why we often analyze the climate in various regions.”
Your age remains a critical factor, too. Aging decreases both body and skin temperatures, leading to delayed sweating and diminished output. Thus, fans may begin to warm you at lower temperatures if you’re older.
Wearing damp clothing or using a spray can mitigate these challenges by promoting sweating without increasing dehydration risks.
Many variables, including clothing type and body acclimatization to heat, influence cooling. Ultimately, if you’re in a hot building during a heat wave, temperatures can surpass the threshold at which fans are helpful, even with water sprays.
“At that point, finding a cooler environment outside is likely your best option,” Hebnis warns. “Because situations like this can be dire.”
Domestic cats (Felis catus) exhibit brain atrophy and neurological decline patterns similar to those seen in aging humans, providing an excellent model for studying dementia and the aging process.
Januel et al. utilized 3,754 data points from age-related brain fluctuations and blood chemistry profiles to align human and cat ages throughout their lifespan. Image credits: Sci.News / Makieni777 / Rise-a-mui / Alexas_Fotos / Dorothe / Vaclav Zavada / Artem Makarov / Daga Roszkowska / Birgit / Pasi Mammela.
Cats have a relatively long lifespan, with evidence suggesting that their aging patterns may mirror those of humans.
According to AnAge, the maximum human lifespan (122.5 years) is nearly double that of great apes, such as chimpanzees (68 years).
Domestic cats can live up to a maximum of 30 years, significantly outliving their wild relatives, like the European wildcat (Felis silvestris), which averages around 19 years.
With an estimated 600 million cats globally, these findings emphasize the relevance of studying their aging processes.
“Given the longevity and abundance of domestic cats, we concentrated on interspecific age concordance between humans and cats, focusing on the aging process,” stated Christine Charbet and her team from Auburn University.
The research examined 3,754 data points derived from humans, cats, and other mammal species.
This data encompassed brain imaging, blood chemistry, disease markers, and behavioral milestones like eye opening and play initiation.
MRI scans revealed that cats and humans undergo comparable age-related changes in brain structure, including shrinkage and ventricular enlargement—changes typically associated with neurodegenerative conditions in both species.
“The similarities in age-related brain atrophy between cats and humans were surprising,” remarked PhD candidate Briar Rigby Dames from the University of Bath.
“These findings underscore the potential of companion animals to provide critical insights into the aging process.”
Instead of using basic age ratios, the researchers employed a complex biological model based on quantifiable age-related changes.
This method showed that aging in both species does not happen at a uniform rate; instead, it accelerates and decelerates at various life stages.
According to the model, late-life aging patterns align closely—80 years in humans equals approximately 15 years in cats. While not all animals reach old age equivalents in humans, domestic cats certainly do.
Dr. Ryan Gibson, a veterinary neurologist at Auburn University, added, “An increasing number of cat owners are seeking advanced brain imaging to identify illnesses in their pets, creating a unique avenue for studying aging animals alongside humans in real-world contexts.”
“This expanded clinical access opens valuable opportunities for translational research—bridging scientific knowledge with healthcare—to deepen our understanding of aging and neurological diseases that benefit both cats and humans.”
Rigby-Dames noted, “There is potential to establish extensive veterinary health databases for companion animals, akin to human health databases like the UK Biobank.”
“Such resources could significantly enhance our ability to investigate aging and diseases using real-world clinical and owner-reported data across species.”
These findings are published in the journal Biology Open.
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Capucine Januel et al. illustrate that cat brains age similarly to humans: Revealing that pet cats live long enough to serve as a natural model for human aging. Biology Open 15 (6): bio062604; doi: 10.1242/bio.062604
A renowned actor who experienced a stroke was treated by specialist Sander Nardai. The actor developed aphasia, which hindered their speech abilities. Nardai remarked, “It was likely the most tragic event for an actor.”
After three months, the actor could say a few words. Remarkably, a year later, he voiced a commercial and eventually returned to live theater. You can learn more about Nardai’s work at Semmelweis University, Hungary.
While there are inspiring recovery stories, many stroke survivors face significant challenges. A stroke can disrupt brain function, damaging cognitive and physical capabilities. Estimates suggest that only 35% of survivors achieve a full recovery, with the majority facing life-altering issues such as aphasia, paralysis, and cognitive changes. Stroke remains a primary cause of disability globally, impacting nearly 100 million people.
As illustrated in the actor’s recovery, the brain shows remarkable resilience and adaptability post-stroke. However, the extent of recovery varies among individuals. Ongoing research is uncovering the reasons behind this variability to improve treatments and support recovery for more patients.
Factors Influencing Brain Recovery After Stroke
A stroke occurs when blood supply to the brain is interrupted, either by a rupture or blockage. This deprives the brain of oxygen, leading to neuron death and impairing reasoning, movement, and communication. The body’s immune response can exacerbate the damage through inflammation.
Factors such as age, prior health, and stroke severity play significant roles in recovery. Neurologist Pankaj Sharma from Royal Holloway University notes that predicting recovery outcomes is complex due to numerous variables. Most individuals experience significant improvement within six months post-stroke, though some may deteriorate over time. Immediate treatment to dissolve blood clots can minimize long-term damage, while ongoing rehabilitation like speech and physical therapy may continue to yield benefits. Ultimately, the brain’s innate ability to heal remains a primary factor in recovery.
The recovery process is intricate, with surviving neurons capable of forming new connections. In the event of a stroke, “new pathways emerge, bypassing damage,” explains Sharma.
A theory suggests that different brain regions might take over functions lost due to damage, akin to colleagues covering for absent workers. Researcher Argye Hillis at Johns Hopkins School of Medicine comments on this concept. Yet, some studies, like a 2021 survey involving mice, found minimal evidence to support the “remapping” idea. Instead, rehabilitation might enhance the strength and capabilities of remaining neurons in the affected area.
Pre-stroke brain health significantly influences recovery, according to a recent study conducted by Celine Gillebert at the Brain Institute in Leuven, Belgium. The findings indicate that metrics such as brain volume can be strong predictors of post-stroke cognitive function, sometimes more so than the injury’s location.
Cognitively healthy individuals retain more intact brain function despite injury, while those with higher education levels may experience a more pronounced decline. A 2025 survey found that college-educated individuals exhibited greater declines in higher cognitive functions than non-degree holders .
Genetics also plays a crucial role. In a review, Sharma linked specific genetic variations, especially involving the APOE4 gene associated with Alzheimer’s onset, to poorer recovery outcomes after stroke. Yet, individuals with certain genetic profiles may demonstrate enhanced neural adaptability recovery, especially in specific populations.
Lack of blood flow to the brain significantly affects function.
Zephyr/Science Photo Library
Advancements in Stroke Treatment
Understanding the neural mechanisms in stroke survivors like the actor could pave the way for treatments that help level the recovery field. Nardai emphasizes the combination of a healthy brain pre-stroke, prompt treatment, and rehabilitation as critical factors in this actor’s successful recovery.
Researchers are investigating the significance of CCR5 mutations, which also seem to confer protection against HIV. Existing HIV treatments are being studied for their potential to replicate these natural advantages in stroke recovery. Early findings show promise.
Additionally, Naohiko Okabe and colleagues from UCLA recently identified a drug that appears to enhance outcomes in post-stroke rehabilitation in mice.
The research team observed that successful rehabilitation increased gamma oscillations, electrical signals aiding brain cell communication. They tested compounds that could replicate these benefits and found a gamma ray enhancer developed by researcher Istvan Mody could yield favorable post-stroke effects. The next step involves human trials, although Okabe cautions that success is not guaranteed. If effective, this drug could transform stroke treatment, particularly for patients lacking access to traditional rehabilitation services.
Another avenue of exploration includes enhancing the brain’s natural healing capabilities through the repurposing of commonly prescribed drugs. Antidepressants may enhance neurotransmitter availability, bolstering the brain’s adaptability. Anti-inflammatory medications are also being examined for their potential to mitigate stroke-related damage at the University of Manchester, UK.
Some innovative approaches are almost science fiction-like. Researchers from the University of Southern California and the University of Zurich recently published findings on stem cell injections for stroke treatment. Stem cells have shown potential in developing into mature neurons, repairing the blood-brain barrier, and reducing inflammation.
Brain-computer interfaces are gaining traction as well. In April, the German company CorTec received “Breakthrough Device Designation” for their brain-computer interface, designed to facilitate communication between the brain and external devices, enabling voluntary movement of paralyzed limbs. This technology not only aids functional recovery but also has the potential to promote brain rewiring through practice.
CorTec’s device helps patients regain movement in paralyzed limbs.
CorTec
Psychedelics are also a thrilling area of exploration. Researchers at Johns Hopkins University have begun human clinical trials with psilocybin, a compound in magic mushrooms, aiming to stimulate brain growth. Additionally, a recent study indicated that the psychedelic DMT might prevent cell death, promote brain rewiring, and fight inflammation post-stroke. Nardai envisions administering DMT en route to a hospital to mitigate damage, though further research is necessary.
While strokes can be devastating, the remarkable adaptability of the brain in certain recovery stories, like that of the actor, illustrates that hope remains. As we gain deeper insights into the mechanisms of recovery, the aspiration is to enable more individuals to reap the benefits of such advances.
SpaceX Falcon 9 Rocket and Starfall Capsule Launch
Credit: Jennifer Briggs/ZUMA Presswire/Shutterstock
SpaceX has successfully launched its secretive Starfall system demo capsule into low Earth orbit today. While details on upcoming launches and services remain scarce, SpaceX has shared that Starfall will revolutionize space cargo delivery, including pharmaceuticals and manufacturing materials like semiconductor alloys.
The Starfall capsule lifted off around 6:50 AM local time (11:52 BST) this morning aboard a Falcon 9 rocket from Cape Canaveral, Florida, and successfully landed on a floating platform in the Atlantic Ocean.
What Will Starfall Achieve?
Although SpaceX has not disclosed much about Starfall, a review by the U.S. Federal Aviation Administration (FAA) indicated its primary purpose is the “transportation and delivery of goods through space.” The mission aims to provide “routine access to microgravity environments for scientific research and space manufacturing.” The FAA report also confirmed approval for two additional re-entry vehicle landings associated with this demonstration mission.
Unlike SpaceX’s human-carrying spacecraft to the International Space Station, the Starfall capsule is designed exclusively for cargo. It features a blocky cylindrical design, approximately 3 meters in diameter and less than 1 meter tall, with a payload capacity of 1 ton. The capsule consists of two sections that separate after atmospheric re-entry: the upper section for the payload and a carbon fiber heat shield, which contains compressed gas for safe cargo transport to Earth.
Launch Updates
Following the Falcon 9 rocket’s lift-off, the booster successfully landed on a floating platform in the Atlantic. However, further updates on the Starfall capsule’s status in orbit are pending, including its duration in space before the planned splashdown in the Pacific Ocean, approximately 800 miles off the California coast.
Is SpaceX Unique in This Endeavor?
While SpaceX leads with Starfall, several smaller companies also aim to manufacture materials in low Earth orbit. For example, American firm Varda Space Industries (VSI) plans to produce medicines in orbit before transporting them back to Earth, and Welsh-based Space Forge targets semiconductor and alloy manufacturing.
However, these operations are much smaller compared to Starfall. VSI has launched six small containers, each about 1 meter wide and weighing 300 kilograms, whereas Starfall is three times larger.
Additionally, SpaceX holds a contract with the U.S. military, potentially integrating Starfall into its logistics. The Department of Defense is advancing a project named Rocket Cargo, utilizing SpaceX’s larger Starship rockets for rapid supply deliveries to remote locations. Starfall could serve as a crucial step for smaller cargo deliveries. The U.S. military also collaborates with other companies like Jeff Bezos’ Blue Origin and New Zealand’s Rocket Lab to explore cargo transportation possibilities from space.
If you’ve ever noticed a sudden warmth accompanied by red patches on your face, neck, and chest after consuming wine or spicy curry, you are likely experiencing a histamine flush sensation.
While typically harmless, this reaction can sometimes serve as a crucial warning sign for underlying health issues.
Histamine flush occurs due to the dilation of small blood vessels (known as vasodilation) beneath the skin, a process mediated by histamine.
Histamine is a chemical stored in certain immune cells, released by the body in response to needs for attention, such as allergies, infections, or food ingestion.
When histamine binds to receptors on blood vessels, it causes the vessel walls to relax and expand, resulting in increased blood flow. This can lead to facial redness, lasting from a few minutes to several hours.
This process mirrors blushing due to embarrassment but is chemically induced, not emotionally triggered.
Common culprits of this flushing reaction include alcohol, spicy foods, heat, stress, exercise, and certain medications. Fermented and aged foods like aged cheese, sauerkraut, and cured meats often contain elevated histamine levels.
Alcohol is a dual trigger; red wine and some beers have histamine, while ethanol inhibits the enzyme responsible for breaking down histamine, causing it to remain in your system longer.
For many individuals, this flushing signifies that they have reached their daily histamine production threshold rather than an allergic reaction.
Blushing after a chilly walk or due to embarrassment doesn’t always indicate a serious issue. However, if it occurs alongside other symptoms, it could be a concern. – Credit: Getty
However, frequent flushing may indicate other conditions, such as:
Fluctuating estrogen levels can disrupt body temperature regulation, resulting in hot flashes akin to those caused by histamine.
3. Carcinoid syndrome
This rare condition is associated with temporary facial flushing, diarrhea, and wheezing, usually stemming from a hormone-secreting tumor.
4. Mast Cell Activation Syndrome (MCAS)
A rare condition where mast cells inappropriately release histamine, leading to symptoms like facial flushing, abdominal pain, dizziness, and fatigue.
5. Systemic Mastocytosis
This condition is characterized by an overproduction of mast cells, resulting in flushing, itching, abdominal pain, and sometimes severe allergic reactions.
6. Anaphylaxis
Flushing, accompanied by low blood pressure, airway swelling, wheezing, swollen lips or tongue, or widespread hives, is a medical emergency.
If you experience frequent flushing, discomfort, or any additional symptoms, it’s advisable to maintain a trigger diary and consult your healthcare provider.
In most cases, histamine flushing reflects normal physiological processes. The redness fades as swiftly as it appears, serving as a reminder of the body’s intelligent adaptability to its environment.
This article addresses the question posed by Fionn Doyle from Cardiff: “What is a histamine flush? And what does it suggest?”
If you have any queries, please contact us at:questions@sciencefocus.com or reach out viaFacebook,Twitter, orInstagram (please include your name and location).
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Gene therapy aims to teach individuals how to synthesize anti-aging proteins, while remaining independent of a person’s genome.
Andrew Brooks/Image Source/Getty Images
An innovative injectable gene therapy promising to extend human lifespan is set to be available in several countries. However, it is important to note that this therapy has not undergone exhaustive clinical trials nor received approval from the U.S. Food and Drug Administration (FDA) or equivalent regulatory bodies.
Developed by Minicircle, a biotech company based in Austin, Texas, this therapy aims to enhance the production of klotho, an anti-aging protein, within human cells. To avoid lengthy FDA clinical trials, Minicircle plans to offer this largely unproven therapy to individuals traveling to Honduras, the Bahamas, and Panama. Interested parties can join a waiting list on their website to access treatments projected to commence within six months.
Medical ethicists caution that bypassing regulations meant to ensure patient safety could be dangerous. “This mirrors Silicon Valley’s attitude of ‘move fast and break things,’ posing a real risk of harm,” asserts Christopher Rudge from the University of Sydney, Australia.
Named after a Greek goddess believed to weave the fabric of life, the effects of klotho were first noted in studies involving mice devoid of this protein, which experienced accelerated aging and premature death. Subsequently, genetically modified mice producing excess klotho showed a lifespan increase of up to 30%. Additionally, injections of klotho have shown promise in enhancing memory in older primates.
As people age, klotho levels decrease, prompting Minicircle and others to seek methods for replenishing these levels. Rudge warns that although there are studies indicating potential lifespan extension in mice, the effects on humans remain unverified. Furthermore, a case of a child with naturally high klotho levels highlighted potential health risks, including bone fragility and growth disorders, suggesting that excessive intake might be detrimental.
According to Minicircle, their “life-extending” gene therapy utilizes a mini circular DNA structure, known as MiniCircle DNA, which instructs cells on how to produce the klotho protein. Administered via injection into abdominal fat, it is absorbed by fat cells, promoting klotho production that then circulates throughout the body. This DNA remains outside the chromosomes and does not integrate into the genome, eventually being degraded and eliminated. The company’s projections suggest effects could last for up to a year.
Minicircle has estimated that its therapy will cost over $300,000, allowing a three-year window for FDA approval. As an alternative, the company conducted a “proof of concept” trial in late 2025 with 24 participants in the U.S., treated at an “international partner clinic.” Notably, a clinic in Honduras allows developers to work within a flexible regulatory framework, also present in Panama City and Paradise Island, Bahamas.
While results from the klotho trial remain undisclosed, the company has indicated plans to publish clinical trial data soon. The founder and CEO, Mac Davis, shared personal experiences with the therapy, reporting improved immune response and reduced food sensitivities, though he also encountered transient effects. Nonetheless, the company has not responded to inquiries regarding clinical results.
Critics like Gyngell describe the small-scale trial conducted without a control group as insufficient for validating safety and efficacy. “Continuous protein production might yield adverse effects over time,” he notes. Additionally, prior gene therapy trials, even under strict supervision, have led to serious complications, underscoring the need for meticulous regulatory oversight.
Currently, no other klotho-enhancing gene therapy has been examined in human subjects. Researchers, including Miguel Chillon from Spain’s Autonomous University of Barcelona, have been exploring alternative klotho therapies through animal studies, reporting a 20% lifespan increase in rats, albeit with significant side effects. Chillon’s team is now investigating a smaller version of klotho, which appears to exhibit fewer adverse reactions, and aims to conduct trials under established regulations.
Experts, including Alex John London from Carnegie Mellon University, stress that premature efforts by companies like Minicircle could have detrimental effects on the entire field. “If risky treatments result in harmful outcomes, it could undermine years of diligent search for safer solutions,” he warns.
Although drug development is notoriously expensive, London emphasizes that the intricacies of human biology require thorough testing. Unregulated therapies risk repeating past mistakes that regulations aim to guard against, reminding us of the importance of patient safety.
In 2022, Minicircle introduced another non-FDA approved gene therapy targeting muscle growth through increased protein levels of follistatin. Preliminary results from a trial with 43 participants aged 23 to 88 indicated an average lean muscle increase of 770 grams after three months. However, due to the absence of a control group, the implications remain unclear. Notably, tech entrepreneur Brian Johnson underwent follistatin gene therapy, claiming a 7% increase in muscle mass for a cost of approximately $25,000.
“Individuals must have a clear understanding of risks and benefits if they choose to participate in these pioneering treatments,” Gyngell concludes. “Currently, the uncertainties surrounding these gene therapies are significant enough to warrant caution.”
In Britain, many older homes feature thick walls and small windows, built to retain heat during the prolonged winters. However, these designs are struggling to cope with rising summer temperatures.
“It’s like we can’t escape the heat,” said Stéphane Cretu, a 22-year-old financial analyst from London. “It’s hot outside, but for some reason, it’s even hotter inside the house. I feel like my home is trapped.” This highlights the challenges faced by residents without modern cooling systems.
Contrastingly, many parts of the United States are equipped with widespread air conditioning and modern building designs that help manage extreme summer temperatures. This stark difference underscores the urgent need for adaptation in British homes.
The daily commute is equally daunting for Londoners during heat waves.
“It’s sweaty, crowded, and suffocating,” Cretu described his experience on London’s underground network, many of which lack air conditioning. Additionally, service delays were rampant on Tuesday, compounding the discomfort.
Europe is the world’s warmest continent, with temperatures escalating approximately twice as fast as the global average since the 1980s, according to the European Union’s Copernicus Climate Change Agency.
Governments are under pressure to invest in adaptive measures, ranging from cooling centers to heat-resistant infrastructure. However, experts caution that these solutions may only address the symptoms of rising temperatures, rather than the underlying causes.
“The most effective way to combat increasingly severe heat waves is to confront climate change directly,” Brus emphasized.
Without such action, “there’s only so much we can do.” This emphasizes the critical need for collective efforts toward sustainability.
Have you ever recalled the feelings of your first day at school when you caught a whiff of clay? Or perhaps a perfume from a passing stranger instantly transported you to thoughts of a long-lost love?
This experience highlights the powerful connection between smell and memory.
Neuroscientists have confirmed for over a century that our olfactory system is closely linked to brain regions managing memory and emotions, like the hippocampus and amygdala.
When we inhale, odor receptors in our noses connect with odor molecules, such as those from clay. This triggers olfactory neurons to send rapid electrical signals to varied brain areas in mere milliseconds.
“These are very direct connections between the olfactory system and areas of the brain associated with memory and emotion,” says Professor Thomas Hummel, who has explored the olfactory system at the Dresden University of Technology for decades.
The deep link between smell and memory suggests that losing the sense of smell might be an early indicator of cognitive decline. This is associated not only with normal aging but with neurodegenerative diseases, such as Alzheimer’s disease.
Image credit: Joe Waldron
But what if the reverse is true? Strengthening your olfactory system could not only heighten your ability to enjoy fragrances but also enhance your memory and overall cognition?
This idea has gained traction in laboratories recently, piquing the interest of researchers who believe there’s merit to it.
Several studies, albeit small-scale, have shown that olfactory training can significantly impact cognitive abilities and even alter the brain’s physical structure.
A 2023 review of 18 studies concluded that olfactory training can improve cognitive functions like verbal fluency and language learning.
It has also been shown to increase the volume of specific brain areas, including the hippocampus and olfactory bulb, as well as enhance inter-region connectivity.
Notably, these cognitive enhancements are not limited to individuals experiencing cognitive decline; olfactory training can benefit the general population as well.
“It’s not a magic solution,” Hummel notes. “Enhancing your ability to smell doesn’t automatically make you smarter, but it can aid certain cognitive functions.”
“This concept is appealing because it represents a change that can occur through a simple activity,” he adds. “Anyone can do it, and there are no side effects.”
Enhanced olfactory function may also improve cognitive functions – Image courtesy of Joe Waldron
Various mechanisms have been proposed to explain this effect. One aspect suggests that increased sensory input generally promotes better brain health.
It could also relate to our evolutionary background, wherein our ancestors navigated largely by their sense of smell. Additionally, since the olfactory system has direct access to the hippocampus, it might directly stimulate brain circuits associated with learning and memory.
Amid this exploration, many startups are identifying potential opportunities and are developing scent-training products.
One such startup, Osmo, features an AI-powered digital scent engine, securing $70 million in a recent funding round. Meanwhile, researchers at UCL are advancing the my scent digital olfactory training platform.
You can start training your nose at home with a simple odor training protocol—select about four distinct and familiar odors.
“Stronger scents are more effective than weaker ones,” Hummel advises. Common scents used for research include clove, lemon, coffee, and eucalyptus.
Dedicate five minutes twice daily, focusing intently on each scent for at least 20 seconds. Consider what each scent evokes: How should it smell? What notes can you identify? Is it more intense or milder than expected?
“Consistency is key; change scents every two months for optimal results,” Hummel suggests. While he emphasizes the need for larger studies, he reassures, “This practice certainly won’t cause any harm.”
A wise old wizard once said: “When in doubt, always follow your nose.”
A team of entomologists from the University of Bristol and the Smithsonian Tropical Research Institute has gathered decades of data from butterfly nests, field studies, and laboratory experiments to create the most comprehensive overview of the Heliconius butterfly. Found throughout Central and South America, this colorful species exhibits remarkably slow aging, with lifespans that can increase by approximately three times. Notably, close relatives, such as Heliconius Hewitsoni, have been recorded living up to 348 days in captivity.
Heliconius Hekale. Image credit: Robert Lawton / CC BY-SA 2.5.
The Heliconius genus includes vibrant butterflies found in tropical and subtropical areas of Central and South America, with some ranging into the southern United States.
Commonly referred to as “longwings,” these butterflies are noted for their elongated wings.
Unlike most butterflies that primarily consume nectar, Heliconius butterflies uniquely integrate pollen into their nectar diet, using their proboscis to collect pollen and extracting essential amino acids with saliva.
This innovative feeding behavior was first documented by evolutionary biologist Lawrence Gilbert in 1972.
The additional amino acids are believed to contribute to remarkable traits such as extended lifespan, continuous egg production, and enhanced chemical defenses.
Many Heliconius species can live for several months in the wild, significantly outlasting closely related butterflies in the broader Heliconiini tribe, which typically survive only about six weeks.
While the exact factors contributing to their incredible longevity are not fully understood, it is hypothesized that maintaining a pollen-rich diet into adulthood may be influential.
“Insects represent the most species-rich animal group, showcasing extraordinary morphological and ecological diversity,” says Dr. Jessica Foley from the University of Bristol.
“Lifespan variation is extreme, with maximum lifespans ranging from just a few days in adult mayflies to decades in reproductive castes of certain ants and termites.”
This results in a 5,000-fold difference within the class, as opposed to the 100-fold difference seen in mammals.
“Heliconius butterflies are notable not only for their longevity but also for their slower aging process,” Dr. Foley notes.
“This allows them to outlive their evolutionary relatives, who diverged more recently.”
In a new study, Dr. Foley and her team found that the unique pollen-based diet of Heliconius extends lifespan, but surprisingly, even when deprived of pollen in experiments, these butterflies lived about three weeks longer than their shorter-lived relatives.
This suggests evolved genetic changes in their biology, indicating that their unique longevity stems from more than just dietary benefits.
To explore the underlying mechanisms, researchers measured not only survival duration but also how physiological conditions change with age.
Using grip strength as a measure of physical condition, findings revealed that closely related species like Dorias Julia lost about a quarter of their grip strength within five weeks, while Heliconius Hekale showed no measurable decline in grip strength over a significantly longer lifespan.
The lifespan difference between these groups is a remarkable 25-fold, one of the largest recorded for closely related animals, rivaled only by certain fish species.
Insects are prime candidates for identifying mutations associated with longevity due to their brief lifespans, allowing for practical long-term studies that would take decades in mammals.
Scientists are optimistic that Heliconius butterflies will serve as a new model organism in aging research, as their rich genomic data facilitate studies of molecular mechanisms behind “extended healthspan.”
“Exploring lifespan extension in Heliconius provides an exceptional opportunity to understand the biological mechanisms of longevity,” said Dr. Foley.
“Comparing long-lived Heliconius butterflies with their short-lived relatives creates a natural evolutionary experiment that may illuminate how lifespans can be extended, making it a promising model for aging biology.”
The team’s findings are published in the journal Nature Communications.
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J. Foley et al. 2026. Evolution of longevity and slowing of aging in a genus of tropical butterflies. Nat Commune 17, 5077; doi: 10.1038/s41467-026-73635-7
For decades, paleoanthropologists have posited that hominins, the ancestors of modern humans, evolved gradually over millions of years. However, new research from the University of Reading significantly complicates this narrative. The most notable increase in body size took place approximately 2 to 2.5 million years ago with species such as Homo rudolfensis and Homo erectus/ergaster. In contrast, Homo floresiensis and Homo naledi maintained smaller statures akin to early humans like Australopithecus, averaging 40 kg in weight and resembling the height of a child. Other branches of Homo exhibited a marked increase in size, with Homo erectus/ergaster being the first to commonly exceed 60 kg, aligning their weight more closely with that of modern humans.
Homo heidelbergensis, Neanderthals, and Cro-Magnons. Image credit: SINC / Jose Antonio Peñas.
Body size is a critical aspect of organismal biology, influencing various factors including ecology, life history, physiology, and neuroanatomy.
In hominin evolution, increased body size is correlated with larger brain capacity, enhanced bipedalism, and a greater range of mobility.
Despite this significance, a consensus on constant increases in hominin body size over time remains elusive.
Recent studies provide conflicting perspectives, with some challenging the general evolutionary trend while others highlight increases in overall weight and height.
The smaller-bodied species, Homo floresiensis and Homo naledi, are frequently cited as exceptions.
Moreover, some researchers propose that increases in size might be lineage-specific, occurring within certain Homo groups.
However, lineage-specific size changes have yet to be analyzed alongside general trends using a unified model.
“Over time, various studies have drawn different conclusions about whether our ancestors consistently increased in size or experienced rapid growth during pivotal moments in human evolution,” stated lead author Dr. Jacob Gardner, a researcher at the University of Reading.
“The disparity arises because each study has focused on different parts of a much larger puzzle.”
“By integrating all available fossils, considering multiple competing theories, and clarifying inter-species relationships, a clearer picture begins to emerge. The answer likely incorporates elements from these varying theories.”
“The narrative of human evolution is not solely one of continuous growth; it involves significant changes that occurred later within our own genus, alongside the development of other lineages that took distinct evolutionary paths.”
In their recent study, Dr. Gardner and colleagues assessed estimated body weights from 386 fossil specimens across 21 human species, ranging from ancient australopiths to modern Homo sapiens.
Employing advanced statistical models to elucidate evolutionary relationships between species, they discovered that the dynamics of human body size are far more intricate than a straightforward upward trajectory.
The most prominent trend identified indicates a considerable increase in size, particularly in the later members of the Homo genus—occurring after Homo habilis—rather than a consistent growth through all of history.
Species such as Homo ergaster and Homo erectus exemplified a notable size jump, coinciding with other key evolutionary advancements, including improved bipedalism and dietary shifts towards carnivory.
A widespread gradual increase in size across all hominins receives moderate backing and is heavily influenced by the fossil datasets and estimation approaches applied, which remain contentious areas within the field.
Two species notably stand out as consistent anomalies: Homo floresiensis from Indonesia and Homo naledi, both of which consistently fall below the average weight forecasts for their respective time frames.
“Our findings indicate that the evolution of human body size isn’t merely a tale of steady progress,” remarked co-author Dr. Thomas Pushell from the University of Oxford.
“While there has generally been an increase in weight throughout our evolutionary timeline, the majority of significant shifts occurred later within the Homo genus.”
“This transformation aligns with broader developments in how our ancestors navigated their environments and adapted to varying ecological niches, underscoring the close relationship between body size and major behavioral and ecological changes.”
For more insights, refer to the findings published today in Proceedings of the National Academy of Sciences.
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Jacob D. Gardner et al. 2026. Competing models of human body size evolution. PNAS 123 (27): e2521732123; doi: 10.1073/pnas.2521732123
Interstellar comet 3I/ATLAS exhibits a unique chemical signature, distinguishing it from comets in our solar system, and may have originated 10 to 12 billion years ago—predating the Sun itself—according to two studies published in the journal Nature.
Hubble captured this stunning image of 3I/ATLAS on July 21, 2025. At this time, the comet was located 446 million kilometers (277 million miles) from Earth. Image credits: NASA/ESA/David Jewitt, UCLA/Joseph DePasquale, STScI.
Discovered in July 2025, 3I/ATLAS is the third known interstellar object to enter the inner solar system.
Despite extensive observations, the precise age, origin, and trajectory of 3I/ATLAS remain uncertain.
Estimates based on its speed suggest an age ranging from 3 billion to 10 billion years old.
Analyzing isotope ratios offers insights into the physical and chemical conditions present during the formation of 3I/ATLAS.
“This presents a rare opportunity to study an ancient celestial body, possibly older than the Sun or our Solar System,” said Dr. Martin Cordiner, an astronomer at NASA’s Goddard Space Flight Center.
“On one hand, we gain direct insight into distant epochs and locations; on the other, we learn more about the unique nature of our solar system.”
As 3I/ATLAS moved away from the Sun in December 2025, Cordiner and colleagues utilized the NASA/ESA/CSA James Webb Space Telescope to acquire detailed measurements of its chemical makeup.
Webb’s NIRSpec (Near Infrared Spectrometer) revealed exceptionally high deuterium levels—approximately 30 times greater than those found in solar system comets.
This indicates that 3I/ATLAS may have originated in the earlier phases of the Milky Way, within a very cold star system.
During its formation, the material inside the comet was likely subjected to substantial radiation exposure, but not warm enough for an extended duration to transform its heavy water ice into the type of ice familiar on Earth.
Moreover, NIRSpec detected only minute amounts of carbon-13 compared to the lighter carbon-12, reinforcing the notion of 3I/ATLAS’s ancient origin.
In contrast, planetary systems formed around the Sun, about 4.5 billion years ago, show higher levels of carbon-13.
The authors estimate that 3I/ATLAS formed approximately 10 to 12 billion years ago during the “cosmic noon” of the universe—when star formation peaked.
In its early days, the system may have been enveloped in a relatively cool, dense cloud.
The elevated levels of heavy water indicate that 3I/ATLAS spent its formative years in a state of deep freeze.
This infographic illustrates the stark differences in heavy carbon to deuterium ratios between solar system comets and the interstellar comet 3I/ATLAS. Image credit: NASA / ESA / CSA / M. Cordiner / L. Hustak, STScI.
In a related study, astronomer Cyriel Opitum from the University of Edinburgh and colleagues conducted observations of interstellar visitors utilizing the UV-Visual Echelle Spectrometer (UVES) of ESO’s Very Large Telescope from December 6 to 26, 2025.
Their findings complement those from Webb by analyzing the chemical forms of carbon and nitrogen present in 3I/ATLAS.
“While the discovery of these rare isotopes intrigues us as scientists, the broader significance lies in exploring the potential for prebiotic chemistry elsewhere in the galaxy,” noted Dr. Stephanie Milam, also from NASA’s Goddard Space Flight Center.
“Currently, we only know one location in the vast universe where chemical components have led to life: our solar system and Earth.”
“Examining these interstellar objects is a pivotal step toward understanding how common or rare conditions for life’s evolution may be across the universe.”
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M. Cordiner et al. Isotopic evidence for the cold and distant origin of 3I/ATLAS. Nature, published online June 22, 2026. doi: 10.1038/s41586-026-10771-6
C. Opitom et al. 2026. High isotopic ratios of nitrogen and carbon in interstellar comet 3I/ATLAS. Nature, in press. arXiv: 2603.07187
A newborn baby’s brain closely resembles that of an adult
Craig Bolan
At birth, a critical brain structure is already in place. In just nine months, approximately 100 billion neurons develop from a mere 3-millimeter “neural tube,” forming a blueprint for the entire central nervous system.
This impressive neuron count is surpassed only by the 100 trillion connections they form, akin to a city’s subway system. “It’s designed efficiently to enhance functionality,” explains developmental neuroscientist Moriah Thomasson from New York University.
Shortly before birth, the brain exhibits a remarkable similarity to the adult brain, with the fetal connectome sharing 61% of the same functional organization. “It’s astonishing,” says Thomasson. However, the fetal brain should not be mistaken for a miniature adult brain. Some species, such as foals, are able to walk and feed shortly after birth. In contrast, humans experience significant dependency due to our extensive childhood.
“The unfinished nature of our brains is intentional; we need our environment to shape them,” remarks mind philosopher Timothy Bain at Monash University, Australia. “Evolution has equipped us to adapt to various languages; being born in a bilingual environment should not restrict our potential.”
Birth triggers significant transformations in the brain. “It’s almost overwhelming,” Thomasson notes. The newborn, reliant on the buoyancy of the womb, now faces gravity, temperature changes, and a deluge of new visual stimuli. Consequently, layered myelin sheaths form, enhancing connections across the nervous system and refining specialized brain networks. “These pruning processes intensify rapidly,” Thomasson remarks. “You’re solidifying connections.”
As development progresses, our skill in navigating the world becomes increasingly sophisticated, relying on foundational cognitive abilities. Initially, the brain distinguishes objects, tracking their movements and identifying faces and emotions. “Early recognition of emotions is crucial; it offers insights into others’ mental states,” Bain observes.
Brain imaging technology enables researchers to examine the formation and connectivity of brain networks in adults and fetuses alike. However, deciphering the implications for experiential development remains complex. Evidence of prenatal brain activity suggests some levels of consciousness may be present in fetuses. Bain proposes that while fragments of consciousness may exist, a true awareness does not emerge until exposure to the world post-birth.
Despite advancements in understanding brain biology’s role in conscious experience, philosophical debates around thought and consciousness persist. “Can thought exist without consciousness? Can consciousness exist independently of thought?” questions consciousness philosopher Philip Goff at Durham University, UK. Bain believes that thought is primarily about our interactions with the world. For instance, a few months after birth, a baby might exhibit unique actions to explore moving objects. “I wonder if the initial thoughts of a baby are tied to intentions or the joy of achieving them,” he muses.
The perspective that thought and consciousness do not manifest meaningfully until birth seems intuitive. However, cognitive scientist Anna Chaunika from the University of Lisbon warns that this view is biased and overly adult-centric. We often presume experience is rooted solely in the brain, overlooking the layers of full sensory interaction. Research indicates that sensory experiences integrate into a fundamental sense of self as early as the first trimester, Chaunika asserts. Interaction and learning form the core of experience and survival. The evolutionary origins of our neurons and the rapid specialization of our olfactory system during fetal growth underscore this. “Existence precedes knowledge,” she posits.
Ultimately, a fetus’s world is intertwined with its mother. “In the womb, we continuously engage with other beings,” Chaunika explains, noting research that indicates newborns cry distinctly if their mothers speak multiple languages. “Our first realization is, ‘I am not alone.'”
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Our Brains Mature Beyond Adolescence
Craig Bolan
When do we truly become adults? Is it when you turn 18 and leave home, or the moment you realize that you’re responsible for your own appointments? Or perhaps, like my father, you still feel young, despite the mirror revealing your age?
Legally, adulthood often starts at 18 or 21 in various countries, giving you the power to vote, marry, and make medical decisions. However, the journey of brain development is far more intricate. The brain transitions from a juvenile to an adult state gradually, without a definitive moment of transformation. Some brain networks mature in early adolescence, while others develop well into your 20s and beyond.
When can we begin to hold ourselves accountable for our actions as adults? The timeline is more extended than you might estimate.
Until recently, neuroscientists believed that brain maturity was reached around age 25, though there was no solid biological benchmark for this claim. This notion gained traction in the early 21st century from studies that analyzed brain development up to age 20. Since the data was limited, the age 25 estimate offered a broad buffer for individual variations.
Recent research aims to identify precise ages by examining behavior linked to specific brain development stages. For instance, gray matter—dense tissue rich in neurons and synapses—typically thins during the teenage years before stabilizing in the 20s. According to research led by Christian Tamnes from the University of Oslo, gray matter thickness tends to decrease through adolescence and plateau in adulthood.
This brain thinning isn’t alarming; it indicates a transition from a tangled web of connections in childhood to a more streamlined network in adulthood, akin to upgrading from a winding back road to a well-designed highway.
Nevertheless, gray matter doesn’t mature uniformly, revealing that maturity isn’t a fixed point. Factors like socioeconomic status, culture, and social circles play significant roles in brain development. For example, stressful experiences during adolescence may promote gray matter reduction, particularly in lower-income households.
It might be more pertinent to ask: when does the brain begin to exhibit adult behaviors? We can define adulthood through executive function—the capacity for rational decision-making, self-control, and future planning. “Executive function serves as a valuable indicator of brain maturity,” notes Brenden Tervo-Clemens, a researcher focused on normative brain growth at the University of Minnesota.
To explore this, Tervo-Clemens and his team analyzed data spanning four significant datasets involving over 10,000 individuals aged 8 to 35. Their findings reveal that executive function evolves rapidly between ages 10 and 15, experiences smaller but noteworthy changes from 15 to 17, and stabilizes around 18 to 20. Thus, according to this scale, the adult brain reaches full maturity by age 20.
Another facet of adult development is the social cognition intricacies within brain networks, enabling interpersonal interactions. A study by Philip Jackson and colleagues at Université Laval explored brain maturity from ages 12 to 30, revealing varying rates of social function maturation. Skills such as understanding others’ intentions tend to solidify during early adolescence, while the capacity for empathy continues developing post-18.
However, focusing on a singular ability for adult definition can oversimplify the complex nature of the brain. “The brain operates as an intricate system with multifaceted interactions,” observes Tervo-Clemens. “Attempting to find a single measure of brain maturity will always be reductive.”
To gain a comprehensive overview, Alexa Mousley, a developmental neuroscientist at the University of Cambridge, recently analyzed brain scans from infancy to 90 years. Their study, published last year, explored white matter pathways—vital connections facilitating communication between various brain regions.
They identified four critical transformation periods during development, occurring around ages 9, 32, 66, and 83. The timeline from ages 9 to 32 seems especially relevant for defining adulthood, as the brain transitions from fragmented communication during childhood to a more integrated network in adulthood, peaking in global efficiency at age 29.
A separate study from May further corroborates these findings, indicating that while certain white matter areas achieve peak maturity in our 20s and 30s, others continue developing into our 40s. This reinforces the understanding that brain refinement extends well beyond the legal definition of adulthood.
Despite the discrepancies in timelines, these studies indicate that full brain maturity does not occur at age 18, with tangible effects in everyday life. According to Katia Rubia, a Cognitive Neuroscience professor at King’s College London, the limbic system, responsible for emotional processing and reward generation, often matures during adolescence. In contrast, frontal lobe networks governing emotion regulation, impulse control, and foresight may continue developing much later, resulting in an imbalance where adolescents often engage in impulsive actions.
Rubia urges policymakers to consider these brain development insights, suggesting that legal driving ages should be revised. She notes that many accidents involve adolescents whose frontal lobes aren’t yet fully developed, leading to riskier driving behavior.
Some scientists propose developing brain growth charts akin to regular height and weight measurements, facilitating comparison against normative data in contexts like criminal sentencing. However, this remains a challenge. The 2020 report for the Scottish Sentencing Council indicated that logistic concerns make widespread implementation impractical, but as research grows, this may become feasible.
Fundamentally, our legal, medical, and social frameworks require a clearer definition of adulthood, one that the nuances of neurology currently can’t provide. Brain development is uneven and personal, shaped by genetics, culture, and experiences. Certain networks mature faster than others, and some brain functions, like white matter pathways, may not reach full maturation until the 40s, while others decline earlier. Adulthood, therefore, isn’t a fixed endpoint but a continuous journey of growth and change.
Emotionally, research indicates that individuals often feel they reach a sense of maturity around age 29. Thus, while legally we transition to adulthood at 18, neuroscience suggests this development continues well into our 20s and even into the 40s, with personal growth unfolding at its own pace. My father, now 81, still waits for his moment of maturity.
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Scanning Electron Microscopy Image of Psilocybe cubensis, a Highly Potent Hallucinogen Administered to an Alzheimer’s Patient.
Ted Kinsman/Science Photo Library
A remarkable case emerged involving an 83-year-old woman with advanced Alzheimer’s disease, who transformed from communicating in monosyllables to engaging in extended conversations after being treated with high doses of psilocybin. This woman, who also battled urinary incontinence and required assistance to move, regained bladder control and mobility just weeks after beginning the treatment, reinforcing existing research that suggests psychedelics can significantly impact cognition and brain function.
“Her facial expressions became noticeably more expressive. She maintained eye contact longer, smiled more often, and exhibited greater agility,” reported Marcus Lago of the Ankh Cross Society in São Paulo, Brazil, an organization dedicated to holistic healthcare. “During a follow-up session, she spontaneously commented, ‘It feels good to be here.’
The woman had endured a ten-year battle with Alzheimer’s, severely compromising her daily functioning for five of those years.
With her son’s approval, she was administered 5 grams of the potent magic mushroom strain Enigma, a Psilocybe cubensis variant, orally. Initially, she experienced profuse sweating and entered a deep sleep-like state for an extended duration. However, approximately 19 hours later, her son noted that she engaged in a four-hour conversation filled with memories and reflections.
In the weeks following, Lago and his team observed her regain urinary function, independently change her clothes, and engage in spontaneous dialogue. About a month after her inaugural psilocybin experience, she was administered a further three grams, which prompted memories of surfing trips with her son on tranquil islands.
“She selected and coordinated her outfits, anticipated breakfast in the television room, recognized specific situations involving rental cars, and noticed when people were absent—behavior previously uncharacteristic for her,” Lago detailed.
While her Alzheimer’s disease remains uncurable, researchers are optimistic that psychedelic therapy could unlock functional abilities in patients. Psilocybin is known to activate serotonin receptors in the brain, potentially enhancing brain plasticity and reshaping neuronal communication networks.
David Nutt, a professor at Imperial College London, noted he has encountered similar cases where psychedelics appear to enhance cognitive function in individuals with neurodegenerative conditions. “Although these findings don’t definitively establish that psychedelics could prolong life or improve brain health, they are consistent with established understanding of their anti-inflammatory properties,” he stated.
The root causes of Alzheimer’s disease are not fully understood, but one prevailing theory, the amyloid hypothesis, proposes that the accumulation of misfolded amyloid beta proteins between neurons leads to neuroinflammation and the formation of tau tangles within cells, ultimately disrupting nerve connections and causing cell death. “Some brain dysfunction may arise from one neural circuit inhibiting another, and psychedelics could potentially alleviate these issues,” Nutt added.
However, the long-term implications of psilocybin treatment remain uncertain. “I harbor significant concerns regarding the validity and ethics surrounding this report,” remarked Albert Garcia-Romeu from Johns Hopkins University paper. He is involved in a study examining the effects of psilocybin on depression in individuals with mild cognitive impairment or early-stage Alzheimer’s. “This report only covers the month after the initial treatment, neglecting to highlight any sustained effects or further follow-up.”
Garcia-Romeu added that, as this is a solitary case report, its findings cannot be generalized across all Alzheimer’s patients. Furthermore, he emphasized that the diagnosis was made using symptom assessment rather than more reliable techniques such as biomarker tests or neuroimaging.
Nevertheless, there is a call for more extensive research into psilocybin’s potential benefits. “While this case is astonishing, and we must exercise caution in interpreting its implications, it suggests that further trials could be beneficial,” suggested Rudolph Tanzi from Harvard University.
Pigs Regain Walking Ability Post-Spinal Cord Injury Through ‘Fusion’ Therapy
Michael Lebenstein-Gumovski et al. 2026
Currently, over 15 million individuals worldwide suffer from spinal cord injuries, with limited treatment options available. A new study explores exciting advancements in regenerative medicine, revealing how pigs with complete spinal cord severance regained mobility. Read the latest research here.
This groundbreaking work was spearheaded by Michael Levenstein-Gumowski at the Skrifosovsky Institute of Emergency Medicine, Russia. Notably, the study includes insights from neurosurgeon Sergio Canavero, who previously claimed that human head transplants might be possible within two years. His involvement further fuels interest, especially as Russia aims to add spinal cords to its list of transplantable tissues this year.
So, what methods did Levenstein-Gumowski and his research team employ? Initially, they anesthetized the pigs, removed the bony arch of the spinal column, cooled the region, and made a clean cut through the spinal cord. This procedure simulated one of the most severe spinal cord injuries.
Subsequently, the team stabilized the spine around the lesioned area and positioned the severed spinal ends close together. Three pigs were administered a fusogenic compound, composed of polyethylene glycol—used in cosmetics and pharmaceuticals—and chitosan, a biopolymer derived from crustacean shells. This mixture was injected both at the injury site and into the bloodstream, while two pigs served as control subjects without fusogen.
All animals received anti-inflammatory medications and were given electrical stimulation to the limbs for 20 minutes, twice daily. One week post-surgery, the experimental group also received an additional injection of the fusion-promoting agent.
Immediately following surgery, all pigs exhibited motor and sensory paralysis in their hind limbs and pelves, symptoms that persisted in control animals. Remarkably, within 48 hours, one treated pig began to move its hind limbs. By the end of the week, one displayed attempts to stand.
Throughout the 60-day observation period, all three treated pigs achieved the ability to walk, albeit unsteadily. They also regained pelvic control and some sensory function. Examination of the injury site showed reduced degeneration and a significant presence of twisted, thickened axons, creating what the authors termed an “axonal bridge” across the damaged area.
The researchers hypothesize that polyethylene glycol helps to seal injured nerves, limiting degeneration and fostering axon fusion across the injury. Chitosan may additionally aid in sealing neural membranes and providing structural support.
This innovative approach is akin to connecting two wires end-to-end, allowing for the potential continuity of electrical signals across the lesion.
Visualization of Spinal Axons at Injury Site in Pigs
Michael Lebenstein-Gumovski et al. 2026
However, the anatomy of the spinal cord presents significant challenges. Unlike simple electrical cables, the spinal cord comprises a complex network of axons, immune cells, blood vessels, and supporting tissues. Injury to the spinal cord triggers inflammation and scarring, complicating the healing process. Previous studies in mice indicated that functional recovery hinges on returning axons to their intended targets, highlighting the limitations of randomized nerve regrowth.
The research team provided New Scientist with a video demonstrating their technique and voiced confidence in their findings due to the controlled nature of their surgical procedure. Yet, Levenstein-Gumowski confirms plans to integrate electrophysiological evaluations in future studies.
“The outcomes of this research were unexpected, as treated subjects regained some sensory and motor functions,” remarks Melissa Andrews from the University of Southampton, UK. “This includes the ability to stand and respond to stimuli in previously affected limbs, functionalities typically lost in human spinal cord injury cases.”
Nonetheless, she points out that the spinal cord was cooled before severance, which may not accurately reflect typical injury scenarios. Regardless, Andrews notes, “the results thus far appear promising.”
Are Human Head Transplants Next?
Could Fusion Neurosurgery Enable Future Head Transplants?
Sally Anderson/Alamy
Upon inquiry, Levenstein-Gumowski emphasized that their primary objective revolves around innovating strategies to restore functionality and structure to injured spinal cords in humans. Yet, with Canavero’s involvement, the potential intersection with head or brain transplants looms large.
While not explicitly stated as the immediate aim of the pig study, Levenstein-Gumowski conceded that it exists within the broader paradigm of ‘fusion neurosurgery.’ This novel approach marries bioengineering, membrane fusion, and neuroplasticity. Simultaneously, the team is investigating potential applications for “transplant neurosurgery.”
Looking forward, the researchers plan to replicate this experiment with larger animal cohorts, ideally involving independent teams across various nations. “I aim to avoid making unsubstantiated promises and will thoroughly vet this methodology before any clinical application,” he asserts.
Future directions include the exploration of human clinical trials, as similar techniques have been initially tested on cadavers. However, applying them in living subjects remains a complex challenge.
Practical concerns are also paramount. Real-life spinal injuries typically incite significant inflammation, degradation, and scarring, rendering repair efforts much more arduous than in controlled research environments. Levenstein-Gumowski acknowledges the undeniable difficulty of “introducing a potent fusion agent into an unprepared spinal cord, akin to placing a quantum computer in a rustic cabin.” The technology is present, but the necessary systems for effective application are not yet in place.
Consequently, the team is exploring ways to ensure timely access to appropriate preoperative care for individuals suffering new injuries. However, this approach holds limited promise for those with chronic injuries. For these cases, techniques involving donor spinal cord segments are being developed to bridge the damaged regions.
Legal considerations are also critical. Starting September 1, a new law will classify “nerves, spinal cords, and their fragments” as approved transplant materials in Russia. While no other country currently includes spinal cords on such a list, places like Israel and the United States permit the harvesting of stem cells from patients for spinal cord transplant applications.
We may be on the cusp of realizing the feasibility of whole head and brain transplants. Canavero insists that this perspective is grounded in reality. He states, “This is another pivotal step toward human brain transplants.” Notably, he alleges that the inaugural surgery employing the spinal fusion protocol on paraplegics is scheduled for later this year, although further details remain undisclosed.
This area of research encompasses a rich history that extends from Robert White’s monkey head transplant trials in the 1970s—where spinal connectivity was never established—to today’s conversations among life extension advocates who aspire to transplant a consciousness into a younger, brainless clone. For millions wheelchair-bound, it often appears that the transformative benefits of such advances remain distant.
Within this field, extraordinary claims can overshadow tangible evidence. When it comes to human applications of fusion neurosurgery, independent validation, stringent oversight, transparent data sharing, and meticulous regulation will be imperative. Furthermore, distinguishing between spinal cord repair as a viable treatment for paralysis and the ethically sensitive aims of brain transplants will be essential. Lacking these measures, promising therapies for paralysis might encounter unwarranted obstacles.
Tens of millions of dollars have been allocated to the cultivation of seaweed for effective carbon dioxide capture, aiming to mitigate climate change. However, this emerging technology may face challenges that hinder its ability to significantly lower atmospheric CO2 levels and could even lead to unintended increases.
Meeting the Paris Agreement target of limiting global warming to 2°C necessitates robust carbon dioxide removal (CDR) strategies. According to reports submitted to the United Nations, many stakeholders are optimistic about utilizing seaweed as a cost-effective solution. For example, the U.S. startup Running Tide raised $70 million intended for seaweed cultivation in wooden structures designed to sink into the deep ocean, facilitating carbon sequestration, but ultimately ran out of funding and closed last year.
Dutch enterprise Kelp Blue has successfully secured over $2 million to scale up its current seaweed production aimed at generating sustainable agricultural fertilizers in Namibia. This initiative claims the potential to “sequester and offset” approximately 500 million tonnes of CO2 annually as the seaweed particles drift into deeper ocean layers. Learn more.
However, extensive seaweed farming initiatives can adversely affect nutrient levels in local phytoplankton populations. Research indicates that phytoplankton play a crucial role in carbon sequestration as they die and descend into ocean depths.
“It could have localized negative impacts,” stated Manon Berger from the University of Bern in Switzerland. “In specific areas, we might actually reduce the ocean’s capacity to absorb carbon dioxide. The overall potential for beneficial outcomes is limited and could have severe ecosystem impacts.”
Most types of macroalgae, excluding sargassum, thrive near nutrient-rich coastal regions, where they absorb dissolved carbon during photosynthesis, aiding the ocean in capturing more CO2 from the atmosphere.
A significant portion of the seaweed is ultimately digested or decomposed by marine organisms and microorganisms, believed to emit just 1/90th of the carbon captured. To enhance carbon sequestration, seaweed cultivation would need to extend further offshore, necessitating specialized packaging or sinking measures in deep waters.
Nevertheless, nutrient availability in the open ocean is limited, and past studies have often overlooked how iron deficiencies can restrict seaweed growth. Berger and colleagues developed a simulation to assess the feasibility of cultivating 20 billion tons of seaweed annually within 200 nautical miles from coastlines.
The findings revealed that seaweed cultivation significantly depleted nitrogen, phosphorus, and iron levels in surrounding waters, leading to a 95% decline in growth after 25 years. Additionally, this could potentially result in an 8% reduction in global phytoplankton blooms.
While some scenarios suggest that seaweed farming could still remove billions of tons of CO2, the specific species cultivated and their nutrient consumption patterns could mean that for every ton of carbon stored in seaweed, an additional half-ton may be released into the atmosphere.
Models indicate that only about 0.05% of ocean territory near Senegal and southern Australia is conducive to seaweed growth without significantly impacting phytoplankton populations.
“If we rely on a limited number of specialized sites, we simply cannot cultivate enough seaweed to achieve gigaton-scale carbon removal,” Berger commented.
In a separate study, Andrew Youghal and his team at the UK’s National Marine Center modeled the effects of iron fertilization on seaweed regions. They found it could potentially eliminate 40 billion tons of CO2 per year, but this would come at the cost of halving plankton populations, with severe repercussions for fish that depend on them for food.
“This process extracts nutrients from the surface ocean and redistributes them to deeper waters,” Yull explained. “Essentially, this action would diminish or slowly suffocate the natural ecosystem.”
Moreover, cultivating and submerging vast quantities of seaweed would necessitate substantial infrastructure, such as cages, spanning 14% of the ocean’s surface, predominantly in nutrient-infused yet tumultuous waters like the Southern Ocean, North Pacific, and Atlantic Oceans.
Ultimately, if significant areas of the ocean lack iron, the potential carbon removal benefits of seaweed cultivation may not fully counterbalance the loss of plankton, which could amount to as much as 700 million tons of CO2 released annually into the atmosphere.
“It’s not enough to simply grow macroalgae; for effective carbon dioxide removal, we must also factor in the effects on phytoplankton growth,” cautioned Chelsea Baker, another researcher at the UK National Marine Centre.
From cognitive fog to heightened anxiety, the mental health effects of menopause are well-documented. However, recent findings indicate that the neurological changes are more severe than previously understood, possibly explaining the increased risk of Alzheimer’s disease in women.
Roberta Brinton from The University of Arizona explains that these brain changes can be compared to renovating a house: “It becomes a different brain.”
These findings underscore the impact of midlife on brain health and the astonishing resilience of this organ.
“Menopause often reveals neurological vulnerabilities,” Brinton states. “This phase is critical for identifying and addressing neurological risks in women.”
Menopause, which typically occurs around age 50, marks the end of menstruation and is associated with diminished production of reproductive hormones such as estrogen and progesterone. This leads to a spectrum of symptoms, including sleep disturbances, hot flashes, and mood swings.
Symptoms can start in the perimenopausal phase, characterized by significant estrogen fluctuations, which greatly affect brain function, especially since estrogen is essential for various brain activities. This hormone contributes to energy production in the brain by facilitating glucose conversion, making up about 25% of its energy supply. A sudden drop in estrogen can initiate a “bioenergetic crisis,” as Brinton describes.
Evidence of this energy crisis is apparent in MRI studies. In 2021, Brinton and colleagues analyzed the brain activity of 161 women, identifying three distinct groups: premenopausal, perimenopausal, and postmenopausal.
On average, postmenopausal women exhibited about 20% lower glucose metabolism in memory-related brain regions compared to their premenopausal counterparts. Perimenopausal women showed a 10% decrease.
Animal studies suggest that the brain adapts to energy deficits by shifting to alternative fuel sources, primarily lipids. Brinton notes that during menopause, the brain utilizes lipids for energy from the white matter.
White matter acts as a communication network in the brain, facilitating message transmission. In Brinton’s research, a notable 10% reduction in white matter was observed post-menopause compared to pre-menopause, emphasizing the menopausal brain’s dependence on lipids.
Related findings imply potential links between menopause and Alzheimer’s disease, suggesting that hormonal changes might set the stage for cognitive decline. This may help explain why women represent two-thirds of Alzheimer’s cases, and those who enter menopause early face a higher risk.
Despite the assertions about the menopausal brain’s fuel needs, skepticism exists among researchers. In a groundbreaking long-term study, Pauline Maki scanned the brains of 242 women aged 40 to 60. Preliminary findings indicated no significant differences in brain volume, including white matter, across different menopausal stages.
This discrepancy may result from variations in study demographics, leading to the ongoing need for deeper investigation. As more studies are released, the understanding of these findings may evolve.
Regardless, evidence indicates that the loss of estrogen can impair verbal memory, particularly during perimenopause. Maki emphasizes, “These cognitive abilities are highly sensitive to declining estrogen levels.”
However, it’s important to note that most women in perimenopause score within normal ranges on verbal memory tests. “It’s not indicative of dementia,” Maki clarifies, “but there are still noticeable changes.”
Impact of Decreased Estrogen on Memory in Perimenopause
Fatemeh Bahrami/Anadolu Agency/Getty Images
In a recent study, Maki and her team assessed the brain activity of nearly 200 postmenopausal women performing memory tasks. The results indicated that higher estrogen levels correlated with improved memory performance and enhanced activation of brain areas linked to memory.
Another unpublished study from Maki’s team has connected lower postmenopausal estrogen levels to diminished connections between the hippocampus and prefrontal cortex, which are essential for memory function.
These findings illuminate how hormone replacement therapy (HRT), which restores estrogen levels, can enhance cognitive performance in perimenopausal women. Research indicates a connection between HRT and a reduced likelihood of Alzheimer’s disease. However, timing plays a crucial role; most studies suggest that the protective effects of HRT are strongest for those who initiate treatment up to 10 years before menopause.
Early estrogen introduction may help the brain maintain its energy supply to white matter, according to Brinton; once this adjustment occurs, it may be too late for intervention.
Additionally, HRT alleviates hot flashes, which can severely disrupt sleep. “Chronic sleep deprivation is detrimental to brain health,” notes Maki.
Maki’s research has also indicated that local anesthetics can interrupt neural systems responsible for temperature regulation in the spinal cord, potentially aiding in memory improvement for menopausal women. Brinton’s team is also exploring non-hormonal agents that target estrogen receptors to minimize hot flashes and possibly lower Alzheimer’s risk, currently undergoing Phase II trials.
Encouragingly, the brain seems capable of adaptation even without HRT, with studies showing shifts in brain structures after menopause. A recent investigation involving around 11,000 women discovered that gray matter volume decreases during perimenopause, but some areas may rebound after menopause.
The research indicates no significant disparity in memory performance between premenopausal and postmenopausal women. However, those in the latter group appeared to recruit more pronounced activation in the dorsolateral prefrontal cortex, crucial for memory tasks. This suggests that the brain may adapt to hormonal changes by integrating additional neural circuits to compensate.
While the transition may elevate Alzheimer’s risk for some, Maki emphasizes the importance of managing other potential risk factors like high blood pressure and hearing loss.
Despite the rapid cognitive alterations associated with menopause, enduring cognitive issues are not universally anticipated. “All women undergo menopause,” Maki asserts. “However, not all will develop dementia or persistent brain fog. The brain’s transition during menopause highlights its remarkable capacity for reorganization and adaptation in response to change.”
A recently discovered spider species in Australia, the ballista spider, creates snare traps specifically designed to catch green tree ants, boasting accelerations that can inflict over 130 times the force of gravity—enough to fatally impact humans.
Researchers recorded accelerations reaching 1367 m/s as the green tree ants, Oecophila smaragdina, trigger the web’s snare trap.
“To capture this incredible moment, I had to set my camera to 5,000 to 7,000 frames per second,” explains Ajay Narendra from Macquarie University, Sydney. “Such high-speed photography was unprecedented in my years of wildlife documentation.”
In 2022, Greg Anderson of the QIMR Berghofer Institute in Brisbane, Australia, observed the remarkable behavior of green tree ants jumping into the spider’s traps in far north Queensland. However, without specialized camera gear, he could only see a blur of prey being ‘ballistically’ launched from the peculiar conical nests.
In early 2023, alongside Pranav Joshi, also from Macquarie University, Narendra dedicated ten days to studying and photographing these nocturnal spiders belonging to the Arachnida family, yet to receive a scientific name: Propostilla.
The term “ballista spider” comes from the Roman crossbow-like weapon known for launching large projectiles over long distances.
These spiders hide beneath leaves during the day and construct their traps just after dusk, a process that can take up to four hours. They skillfully tie together 15 to 60 tightly bundled tension lines attached to the leaves, forming a cone.
Fully Constructed Ballista Spider Snare
Pranav Joshi
After constructing the trap, the spider employs a chemical to entice green tree ants while sparing other ant species, prompting them to attack the snare with their mandibles.
“The silk appears quite sticky,” notes Narendra. “The ants’ mandibles struggle to release as they inadvertently get glued together.”
In their attempts to escape, the ants inadvertently trigger a tension wire, launching them nearly 30 centimeters into the air, where they become ensnared in the spider’s main web.
This tactic likely serves to elevate the prey above the forest floor, minimizing the risk of counterattacks from the ant colony, explains Narendra.
Although it may seem laborious for the spider to create a trap for each meal, green tree ants present a dependable food source. “The spider simply builds a web, and food arrives,” he adds.
New insights reveal that the main-belt asteroid Donald Johansson—a remnant of a catastrophic breakup 155 million years ago—holds vital clues about the migration of water-rich worlds in the early solar system. This information comes from a detailed analysis of images and data captured by NASA’s Lucy spacecraft.
Asteroid Donald Johansson consists of two heavily cratered lobes connected by a smooth neck, with overall dimensions of 8.8 km x 4.4 km x 3.1 km. Image credit: NASA/Goddard/SwRI/Dan Gallagher.
On April 20, 2025, the Lucy spacecraft conducted a flyby of Donald Johansson, as part of its ambitious 12-year mission to explore eight asteroids.
Unlike conventional rotating asteroids, Donald Johansson rotates about two axes, wobbling around its horizontal axis every 10.5 Earth days while completing an upside-down rotation every 26.5 Earth days.
“We’ve uncovered numerous astonishing facts since Lucy’s flyby of Donald Johansson,” said Dr. Simone Marchi, Deputy Principal Investigator for Lucy at the Southwest Research Institute.
The images captured during the flyby reveal that Donald Johansson features two protruding crater-like lobes connected by a relatively smooth neck.
The density of craters aligns with the age of the Erigone asteroids, formed from catastrophic collisions that fragmented larger parent bodies.
“Lucy’s imagery confirms the elongated shape of Donald Johansson, initially indicated by Earth-based telescopic observations,” Dr. March noted.
The data from Lucy shows that this small asteroid, measuring 800 meters in diameter, resembles a peanut and has a unique two-lobed structure connected through a narrow neck.
Additionally, Lucy detected iron-rich clay minerals indicative of past liquid water presence.
These significant findings suggest that Donald Johansson originated from fragments of a larger, carbon- and water-rich asteroid that disintegrated 155 million years ago.
The encounter between Lucy and Donald Johansson serves as a precursor to the spacecraft’s primary mission, which focuses on exploring Trojan asteroids—ancient celestial bodies that lead or follow Jupiter in its solar orbit.
Scientists believe these populations of space rocks contain crucial insights about the early solar system’s formation.
“Comparing Donald Johansson with similar asteroids like Bennu and Ryugu is essential, as every detail provides hints to our cosmic origin,” Dr. March stated.
“As we learn more about the diverse Trojan population, our understanding of solar system formation is bound to evolve,” she added.
For more details, refer to the findings published on June 18 in Science.
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Simone Marchi et al. 2026. (52246) Donald Johansson’s Lucy Flight: A rolling two-lobed asteroid. Science 392 (6804): 1287-1291; doi: 10.1126/science.aec0503
HD 80606b is renowned for its extreme orbit, making it one of the most fascinating exoplanets discovered so far. The James Webb Space Telescope, operated by NASA, ESA, and CSA, captured an incredible moment of the planet as it flared up while approaching its star.
Artist’s impression of the hot Jupiter exoplanet HD 80606b. Image credit: NASA/ESA/CSA/Joseph Olmsted, STScI.
First detected in April 2001, HD 80606b is a highly eccentric exoplanet with a mass approximately four times that of Jupiter.
This alien world resides around 217 light-years away in the constellation Ursa Major.
Classified as a hot Jupiter, it completes an orbit around its parent star HD 80606 approximately every 111 days.
“Hot Jupiters are recognized as some of the most extreme exoplanets, and HD 80606b is certainly one of the most extreme among them,” stated Dr. Tiffany Kataria, an astronomer at NASA’s Jet Propulsion Laboratory.
“While we typically imagine hot Jupiters as gas giants close to their stars, HD 80606b’s eccentric orbit presents a unique case.”
As HD 80606b nears its star, its surface temperature skyrockets by around 1,100 degrees Fahrenheit.
Prior studies have indicated that these rapid temperature variations can initiate chemical reactions and alter the exoplanet’s cloud formations in real-time.
Due to its dynamic conditions, astronomers consider HD 80606b an optimal target for observing such changes using Webb’s advanced instruments.
“Studying planets like HD 80606b proves efficient since their unusual orbits cause corresponding fluctuations in temperature and chemical composition. This allows us to gather valuable data in just a few hours under varying conditions, which can then be extrapolated to other hot Jupiters and more typical exoplanets,” said Dr. Laura Mayorga from Johns Hopkins University Applied Physics Laboratory.
The researchers utilized Webb’s MIRI (Mid-Infrared Instrument) to monitor HD 80606b during its orbital phases: before, during, and after its closest approach to the star.
At Periastron, the planet also passed behind the star from Webb’s viewpoint, a phenomenon colloquially known as a secondary solar eclipse.
“Dr. Webb revealed that the extent of global warming is even more pronounced than what we observed with Spitzer,” Dr. Kataria remarked.
Scanning Electron Micrograph of the Intestinal Lining of a Mouse
CJC Copyright: IKELOS GmbH/Dr. Christopher B. Jackson/Science Photo Library
Fecal microbiome transplantation (FMT) shows promise in enhancing brain adaptability in older adults, similar to that seen in younger individuals. The gut microbiome is linked to mental health and personality traits. A groundbreaking study reveals that older mice receiving FMT from younger counterparts exhibited improved brain plasticity, potentially aiding in the treatment of conditions such as amblyopia, typically treatable only in childhood.
According to Parisa Gazelani, a professor at Oslo Metropolitan University, “This study indicates that microbial communities may regulate critical periods in brain development, shaping when windows of increased plasticity open and close.” This positions the gut microbiome as a key player in neural development, alongside sensory experiences and immune responses.
Neuroplasticity, the brain’s ability to rewire itself, enables effective amblyopia treatment in children by temporarily occluding the stronger eye, forcing the brain to forge new connections with the weaker eye. While plasticity is at its peak during youth, it declines during adolescence as the brain naturally refines unused connections.
Research from the Sant’Anna School of Advanced Studies in Pisa, Italy, led by Paola Tonini, aimed to explore the influence of the gut microbiome on adult brain plasticity. They administered high doses of broad-spectrum antibiotics to 21-day-old mice, inducing significant alterations in their gut microbiota compared to control mice on untreated water. Notably, there was a reduction in bacterial families like Lachnospiraceae, which are involved in producing neuroprotective short-chain fatty acids.
After sealing one eye of each mouse for three days, imaging revealed neuroplasticity responses only in control mice, whose brains demonstrated increased responsiveness to the unsealed eye’s stimulation.
To uncover underlying mechanisms, researchers conducted RNA sequencing, revealing over 1,000 differentially expressed genes linked to myelination and blood-brain barrier permeability in antibiotic-treated mice. “The changes observed were substantial,” stated Tonini.
In a final experiment, fecal microbiota from 30-day-old mice was transplanted into four-month-old adult mice. Only those receiving the younger microbiota exhibited neuroplasticity in response to the eye closure experiment.
If these findings translate to humans, the implications could be profound, as highlighted by Harriet Schellekens from University College Cork, Ireland: “This hints at the microbiome’s potential in enhancing learning, recovery from injuries, and improving resilience against aging and neurological diseases.” However, discerning specific microbial metabolites or strains behind such effects remains a challenge.
Gazelani cautions against premature human extrapolations, noting the complexity of human brains and the significant influence of diet and lifestyle on microbiomes.
Furthermore, the study raises important considerations regarding the long-term implications of childhood antibiotic exposure, particularly in high, prolonged doses. “While antibiotics are crucial for health, these results underscore the need for their judicious use during critical developmental phases,” emphasized Gazelani.
Disaster can occur when training one chatbot with another
Photo/Getty Images
Recent whistleblower revelations indicate that some individuals hired to conduct high-quality conversations for training AI models are resorting to fraud by utilizing chatbots like ChatGPT. This alarming trend, highlighted by New Scientist, poses a significant threat to the integrity of AI development, potentially resulting in a “breakdown” of sophisticated models.
Currently, most AI models are trained on vast amounts of data sourced from the internet. As the demand for training data escalates, AI firms are employing individuals to interact with and test AI systems in hopes of enhancing the efficacy of future large-scale language models (LLMs).
These workers are often contracted through third-party agencies and typically earn low wages without stable employment. An employee, Alice*, reveals that such work conditions encourage unethical practices, such as relying on chatbots to expedite tasks, despite clear company policies against it.
“It’s very prevalent. Every organization I’ve been a part of has strict guidelines and attempts to monitor compliance. However, stopping it completely seems unlikely,” Alice explains.
Alice expresses no remorse for utilizing ChatGPT to finish training tasks, stating, “As long as you guide the chatbot to avoid recognizable AI signatures, escaping detection is easy. The less careful users are the ones caught.”
“If companies desire high-quality data, they must offer fair contracts,” Alice asserts. “Instead, they exploit struggling individuals, retaining them until project completion and then abruptly terminating their contracts.”
Bob*, another employee working with a training platform called Outlier, initially utilized AI for training before being promoted to a leadership position tasked with monitoring similar behaviors.
“Management oscillates between mild tolerance and strict prohibition,” Bob recounts. Employees at Outlier are monitored via Hubstaff, which captures desktop screenshots at random intervals to confirm adherence to task requirements.
“You can often see AI tools like ChatGPT on the taskbar, either minimized or open in another tab,” Bob says, indicating widespread AI utilization.
Outlier, owned by Scale AI, has not responded to requests for comment, although Scale AI claims to collaborate with tech giants including Meta and Cisco, who have also remained silent. Bob mentions he worked on projects for Google, but they, too, did not respond.
Carol*, another employee with experience across various platforms, admits her initial use of AI was to check for task guideline violations, fearing expulsion and loss of income.
“Initially concerned about my income source, I found it easier to accomplish tasks via the LLM,” Carol states. “Many of my current projects involve scenario creation, so I employ one LLM to devise the scenarios and another for generating the corresponding files.”
“I’m worried that this practice undermines AI quality,” she adds, expressing concern about training models with AI-generated content.
Mark Lee, a researcher at the University of Birmingham, UK, warns that training AI on AI-generated content can lead to “cannibalism” of models, ultimately diminishing their capability. “While this worst-case scenario may not always happen, the misconduct reflected in these practices undoubtedly hampers performance,” Lee states.
He concludes, “A human data presence, even at 10%, can significantly mitigate these issues, ensuring the models do not falter.” The implications of these unethical practices highlight fundamental weaknesses in AI performance, as the technology struggles to mimic human-like ingenuity effectively.
*Names have been changed to protect personal identities.
Could your coffee habit lead to a sustainable power source?
Innovative scientists are investigating how to transform common waste, like used coffee grounds, into eco-friendly materials for energy generation. One promising technique is known as Frictional Charging, which harnesses electricity from movement. This method involves rubbing positively and negatively charged materials together to create a charge that can be utilized by a Triboelectric Nanogenerator (TENG). TENGs offer a greener alternative to fossil fuels by generating electricity from everyday activities, such as pedestrian and vehicular motion.
However, many negatively charged materials used in TENGs are composed of harmful, non-biodegradable plastics like PTFE, contributing to long-term environmental waste. Additionally, TENGs are prone to damage from outdoor conditions. To create sustainable TENGs for practical use, researchers need to develop biodegradable and durable designs.
To tackle this challenge, researchers at Guangxi University in China have created a TENG utilizing coffee grounds as the negatively charged material. Their innovative design produces a sturdy, cost-effective device capable of recycling coffee waste while generating energy.
To formulate the coffee-based material, the team mixed coffee powder with biodegradable, glue-like plastic known as Polycaprolactone (PCL). They heated this mixture to 80°C (176°F) and shaped it into cylindrical pellets. Furthermore, they used another biodegradable plastic called Polylactic Acid (PLA) to 3D print a fully enclosed TENG housing vertical channels structured like the slots in a file organizer to accommodate the pellets.
In their TENG, shaking the coffee ground pellets inside the channel causes them to rub against the PLA surface. Due to coffee grounds’ strong electron-attracting properties, the pellets acquire a negative charge while the PLA surface gains a positive charge. This repetitive motion facilitates the transfer of electrons, resulting in electricity production through the TENG’s external circuitry.
To assess the TENG’s electrical performance, the researchers utilized an electrometer, measuring the electrical output based on the device’s ability to push electrons into a circuit. Voltage, or the speed of electron flow, is referred to as current, while the quantity of electrons flowing is termed transfer fee.
The team confirmed that coffee ground pellets are a viable TENG material by comparing their performance with standard plastic pellets. The coffee powder pellet system produced a voltage of 0.6 volts (V), a current of 18 nanoamps (nA), and a charge transfer of 0.25 nanocoulombs (nC), yielding more than twice the output of pure PCL pellets and over half that of non-biodegradable PTFE. The researchers speculate that the negatively charged components in coffee grounds may enhance the surface characteristics of PCL, boosting charge generation and transfer.
To optimize TENG efficiency, the researchers experimented with various mass ratios of coffee powder to PCL, pellet lengths, and device vibration frequencies. They discovered that the optimal electrical performance occurred with a 3:1 coffee powder to PCL ratio, 8-millimeter pellet length, and 2.6 hertz vibration frequency. Under these conditions, the device achieved an impressive electrical output of 4.7 V, 75 nA, and 1.3 nC, sufficient to power small environmental sensors.
The research team also examined the device’s long-term durability by comparing its electrical performance before and after six months of storage. The voltage experienced only a 6% drop, indicating stable long-term electrical performance for at least six months.
Finally, to explore practical applications, the researchers integrated four TENGs into a wind energy system designed for remote islands. This system employs a rotating cup wheel to capture wind energy and utilizes a slide mechanism to convert it into consistent vibrations of the TENG. As the TENG shakes, the moving pellets generate sufficient electricity to power LED lights and small weather monitoring devices.
The researchers concluded that used coffee grounds could serve as an effective biodegradable TENG material, reducing reliance on fossil fuel-derived products. By merging coffee waste with biodegradable plastics, they created a TENG with enhanced electrical performance, sustainability, and long-term stability. With further innovations, this technology could potentially power road warning lights and provide crucial alerts in remote locations.
Did you know that everyone releases approximately 2.5 liters of gas each day? This natural process occurs due to the air we inhale, the beverages we consume, and the bacteria present in our digestive system. Our bodies effectively expel this excess gas through burping and farting. Often, the amount may be minor, and you might not even notice it, as it can be odorless.
Unlike cows, the primary component of human farts isn’t methane. When some light a fart, it typically ignites hydrogen gas instead.
Farting is completely normal; however, if you notice an increase in frequency, it might indicate an underlying health issue.
Why Do We Fart?
Farting occurs when gas accumulates in our intestines and needs to be released. A small amount of swallowed air enters our intestines, but most gas is produced by bacteria that aid digestion, expelled through both burping and farting.
These gases mainly consist of hydrogen and carbon dioxide; the odor originates from trace amounts of sulfur compounds.
Nerve endings in the anus help differentiate between gas buildup and solid waste, allowing safe release of gas.
Does Everyone Fart?
Absolutely! Gases travel to the large intestine due to swallowed air and are produced by intestinal bacteria. The mix includes nitrogen, carbon dioxide, some hydrogen, and methane, along with trace amounts of compounds like skatole, indole, methanethiol, hydrogen sulfide, and dimethyl sulfide.
Everyone farts, though some individuals manage to keep their farts discreet – Hannah Ashworth
Discover more about flatulence:
Why Do I Fart So Much?
It’s perfectly normal for individuals to have varying fart frequencies. As per the NHS, the average person farts between 5 and 15 times daily. However, some medical conditions can lead to increased flatulence.
Farting can be a symptom of celiac disease or lactose intolerance. Foods that are hard to digest, along with constipation, irritable bowel syndrome, indigestion, and gastroenteritis, may cause excessive bloating and gas buildup. Certain medications might also contribute.
If you suppress a fart, it may come out more quietly, allowing you to hold it in until you can visit the restroom. But eventually, those farts will make their escape! – Luis Villazon
What Foods Make You Fart?
Beans are often humorously noted for causing flatulence. But why do beans lead to increased farting?
Like many others, beans are rich in soluble fiber. While this is beneficial for health, it can lead to gas production in the intestines, resulting in farting. Other gas-inducing foods include lentils, peas, brassicas like cabbage and broccoli, onions, prunes, and apples.
Do Animals Fart?
So all humans fart; does that mean all animals do as well? Read on to discover which animals are the flatulence champions and which manage to be discreet.
Do Rabbits Fart?
Yes! Rabbits are classified as non-ruminant herbivores, meaning they primarily consume plants such as grass and flowers but lack specialized stomachs for digestion. Instead, they depend on gut microorganisms (bacteria and protists) to break down their cellulose-rich diets.
Since digestion occurs mainly in the large intestine, rabbits also re-ingest cecal pellets, which helps them extract maximum nutrition from their food.
This unique digestive system, coupled with their cellulose-heavy diet, leads to the production of gas, making farting essential for rabbit health. Stress, dehydration, and low-fiber diets can cause dangerous gas buildup, potentially leading to severe health issues. – Dani Rabaiotti
Do Spiders Fart?
The topic of spider flatulence remains largely unexplored, but we can examine their digestive systems for hints. Spiders digest food externally by injecting venom into their prey, breaking down the exoskeleton and internal tissue.
They then consume the liquefied remains, a process that may lead to the ingestion of air – a key element for farting. Although bacteria in their digestive systems likely generate gas, conclusive studies on spider flatulence are still lacking. – Dani Rabaiotti
Do Birds Fart?
Birds do possess anuses, suggesting they could fart, yet no official evidence confirms this. One theory posits that birds digest food rapidly, preventing gas from forming during fermentation. Alternatively, their intestines might lack certain gas-producing bacteria found in mammals. It’s also possible that bird farts are so subtle that they go unnoticed. – Charlotte Corny
Did Dinosaurs Fart?
Indeed! Dinosaurs, much like dogs and insects, passed gas. Creatures like brontosaurus and triceratops produced considerable amounts of gas, significantly impacting the Earth’s climate. Research suggests that their emissions contributed to maintaining a warm and moist environment during the Mesozoic Era (250 million to 65 million years ago).
Similar emissions from livestock today account for over 10% of human-induced greenhouse gases. – Dr. Stephen Brusatte
A remote region in the Nevada desert within the Great Basin is set to host the world’s most advanced radio telescope array.
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The California Institute of Technology is spearheading the project and announced its intention to initiate construction of the telescope after securing adequate funding. This project, known as the Deep Synoptic Array, consists of 1,650 individual radio antennas that will collectively study supermassive black holes, pulsars, and fast radio bursts — brief, powerful emissions of radio waves that often originate in deep space.
Greg Hallinan, an astronomy professor at Caltech and the principal investigator for the Deep Synoptic Array, commented, “The vast number of antennas distinguishes this telescope from any existing ones.”
Radio telescopes capture naturally occurring radio waves emitted by various celestial bodies, enabling astronomers to analyze these signals for insights into their structure, composition, and temperature.
While radio telescopes do not capture images like optical observatories, they can convert radio signals into data for imaging.
Hallinan stated that the Deep Synoptic Array will surpass all previous ground-based radio telescopes in performance, observing the sky 100 times faster while producing exceptionally high-quality radio images.
Regarding radio-emitting cosmic objects, he remarked, “Collectively, all telescopes built over the last century have identified approximately 20 million radio sources in the universe. This telescope will double that in just the first 24 hours.”
Each dish in this project is designed to measure about 20 feet in diameter. Together, they will form one of the largest radio telescope arrays ever constructed, covering over 123 square miles managed by the Bureau of Land Management in White Pine County, Nevada.
Hallinan indicated that the project is currently in the permitting phase, aiming to start construction next year and complete it by 2029.
For ground-based radio astronomy, two types of telescopes are commonly utilized: the Green Bank Telescope in West Virginia, which boasts a diameter of 328 feet, and the extensive array of small dishes like the Very Large Array in New Mexico, featuring 27 dishes arranged in a Y-shape.
Single-dish telescopes are generally more sensitive and capable of detecting faint radio waves from deep space, while large arrays of multiple dishes tend to yield clearer images. Hallinan noted that deep synoptic arrays have the potential to achieve both.
Members of the Caltech Deep Synoptic Array Team. Katie Jameson / California Institute of Technology / DSA Project
The Deep Synoptic Array is engineered to detect radio emissions from millions of stars, galaxies, and additional celestial entities emitting radio light.
“Radio astronomy is transforming from sketches to high-resolution imagery,” said Vikram Ravi, Caltech astronomy professor and co-principal investigator of the Deep Synoptic Array, as stated in a recent announcement. “The DSA will scan a significantly larger celestial area more frequently than any other telescope.”
Researchers plan to utilize the array for at least five sky surveys, seeking captivating radio emission pulses for additional study.
“We will pinpoint the exact location of any detected radio source, enabling optical, infrared, and X-ray observatories to target that area for further exploration,” Hallinan explained.
Funding for the initiative has been provided by Schmidt Science, a philanthropic organization established by former Google CEO Eric Schmidt and his wife, Wendy. Schmidt has also recently taken the helm at rocket company Relativity Space, which secured a key NASA contract this week to deliver scientific instruments to Mars in 2028.
As a preliminary step, two prototype plates were recently constructed near Bishop, California, serving as technology demonstrations, according to Hallinan.
To identify a suitable location for the Deep Synoptic Array, Hallinan and his team evaluated sites throughout the western United States, including California, Nevada, New Mexico, and Utah. An ideal setting would be remote, minimizing interference from radio frequencies generated by devices like cell phones and Wi-Fi.
“This telescope is so sensitive that it can detect cell phones from the distance of the Sun,” Hallinan remarked.
The Great Basin in Nevada serves as a natural barrier against unwanted interference.
“The quiet valleys here have minimal population,” he added. “This site in White Pine County is the quietest location we evaluated, making it exceptionally suitable for radio astronomy.”
Narcissists are known for their fragile self-esteem, hidden beneath layers of vanity and bravado. They constantly seek external reassurance to feel special.
This behavior typically manifests in two distinct ways. First, they display a penchant for bragging to affirm their importance and talent. Secondly, they often resort to belittling others when they perceive a threat to their status.
This combination of traits can create a highly combustible interaction between two narcissists, as neither can maintain the top position.
The fireworks don’t erupt immediately. Consider two high-profile narcissists who were once friends.
Initially, these narcissists might perceive mutual benefits from their relationship, each boasting about their unique attributes.
When both individuals accept each other’s claims at face value, they strengthen their sense of self-importance by associating with a seemingly successful and confident partner.
Narcissism is characterized by an exaggerated sense of self-importance, a constant need for admiration, an obsession with status, and a lack of empathy. Credit: Getty
The crux of the issue arises when one narcissist insults or undermines the other, leading to a downward spiral.
In psychological terms, this explanation aligns with the spin model—an abbreviation for “status seeking in narcissism.”
This model suggests that narcissists are preoccupied with status and often enhance their egos through boastfulness. However, when they feel threatened, they engage in a competitive strategy that involves degrading others.
Studies from the 1990s have shown that when narcissists believe they have been criticized, they are more likely to retaliate than non-narcissists.
Additionally, narcissists often prioritize their status over relationships, leading to intense competition when one feels challenged by the other.
Does this sound familiar?
This pattern is further supported by research. One study examined a group of narcissistic students and found that conflict escalates over time, increasing team discord.
Another couples study revealed that while narcissistic individuals may have a rosy start, longer relationships result in lower satisfaction.
If you have two narcissists in your life, the best strategy to avoid conflict may be to help each feel that their status is elevated rather than threatened by the other.
This article addresses the inquiry by Anna Olsen of Sunderland: “What happens when a narcissist encounters another narcissist?”
If you have any questions, feel free to email us at:questions@sciencefocus.com or reach out through our social media:Facebook,Twitter, or Instagram(please include your name and location).
Explore our ultimatefun facts for more incredible science insights.
This weekend, severe storms, flash flooding, and extreme heat are set to impact regions across the Plains, Midwest, and South, posing potential disruptions for World Cup fans, athletes, and vacationers alike.
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Flood watches are currently in effect across the South, impacting eastern Texas, Louisiana, southern Arkansas, Mississippi, Alabama, and Georgia as remnants of Tropical Storm Arthur make their way through these areas.
Preliminary precipitation totals in Louisiana suggest a potential new state record. Previously, the record was 22 inches within 24 hours, but Cottonport experienced an estimated 29 inches on Friday. Additional measurements showed 22 inches in Plauchsville and 17 inches in Simsport, near the Atchafalaya River.
As the weekend progresses, regions in Texas, Louisiana, and Mississippi are expected to receive heavy rainfall, exacerbating ongoing flooding issues from Thursday and Friday. According to the National Weather Bureau, the moist air mass combined with saturated soil raises the risk of localized flash flooding if the storm lingers in one area.
The Plains and Midwest are also at risk of storms, which could threaten Saturday night’s World Cup match between Ecuador and Curaçao in Kansas City. Flood watches are active for Missouri, Nebraska, Kansas, Illinois, and Indiana as thunderstorms may lead to hazardous flash flooding.
Thunderstorms are forecasted for regions in eastern Nebraska, Kansas, and Colorado, with potential risks of tornadoes, large hail, and wind gusts reaching up to 125 mph.
By Sunday morning, the National Weather Service anticipates the storm will continue moving east across the Midwest, with additional storms forming along a slow-moving warm front, increasing the risk of flash flooding.
Meanwhile, other southern areas are bracing for extreme heat and humidity. A heat advisory has been issued for southeast Texas, where the heat index—an amalgamation of temperature and humidity—could soar to 108 degrees Fahrenheit.
World Cup players and fans in Houston may also contend with oppressive heat during Saturday night’s clash between the Netherlands and Sweden.
The National Weather Service advises residents to “stay hydrated, wear light-colored clothing,” and “limit strenuous outdoor activities, particularly in the afternoon.” Heat advisories are also in effect for Louisiana, southern Alabama, and southern Florida.
This patchwork of challenging weather conditions could pose significant inconveniences for travelers. The Transportation Security Administration anticipates over 3 million passengers will navigate TSA checkpoints this Sunday alone, with a high volume of travelers expected throughout the long weekend.
Recent studies reveal that Earth’s earliest animals were quite unproductive, lacking fertility and significantly suppressing the diversity of life for millions of years. It wasn’t until sexual reproduction emerged, influenced by stress and competition, that evolution accelerated.
Research conducted by the University of Cambridge focused on fossils of the oldest known animals, dating back approximately 574 million years. These ancient beings reproduced asexually, creating offspring from a single parent’s genetic material.
As detailed in a study published in Natural Ecology and Evolution, this research sheds light on a long-pondered question among paleontologists: why has animal life changed so little over millions of years?
Among the first life forms were Fructophusus, which roamed the Earth during the Ediacaran period, approximately 635 to 539 million years ago, resembling ferns rather than modern animals.
These organisms lacked mouths, organs, or limbs, likely absorbing nutrients from their surroundings. They reproduced asexually, producing clones via runners similar to contemporary strawberry plants.
According to Dr. Emily Mitchell, lead author of the study from Cambridge’s Zoology Department, “Life in Ediacaran times was so sufficient that the necessity for sex was limited. There was minimal competition, resulting in little urgency for change.”
Mitchell and her team examined fossils at Mistaken Point in Newfoundland, a premier site for Ediacaran period fossils.
Using a sophisticated computer model, they simulated animal community behaviors under various conditions to explore why early animal groups were relatively species-poor.
The first multicellular organisms appeared on the ocean floor about 600 million years ago – Credit: Getty
During the Ediacaran period, animals thrived in nutrient-rich waters with limited competition for resources. However, as they migrated from deeper to shallower waters, they faced increased pressures like tides, storms, temperature fluctuations, and changes in trophic levels.
“As stress leads to sexual reproduction, we witness a notable increase in dispersal distance as animals strive for new territories amid heightened competition,” explains Mitchell.
As these ancient organisms adapted to diverse habitats and reproductive strategies, speciation flourished. This diversification intensified during the subsequent Cambrian period when animals became more mobile.
A team of European statisticians has developed an advanced machine learning algorithm that aims to predict the winner of the 2023 FIFA World Cup.
This innovative model analyzes extensive data on national teams and players, running 100,000 simulations to identify the most probable victor.
According to the lead author, statistician at the University of Innsbruck Dr. Achim Zeileis, in a recent blog post, Spain is favored to win this year’s tournament, closely followed by England.
This isn’t the first time this research group, which includes experts from Germany’s Dortmund University of Technology and Munich University of Technology, Norway’s Molde University, and Austria’s University of Innsbruck, has applied machine learning in forecasting World Cup outcomes.
In 2018, they successfully predicted the United States as the winner of the 2019 Women’s World Cup. However, they had mixed results in forecasting, as they selected Spain and Argentina to win the 2023 Women’s and 2022 Men’s tournaments, respectively.
The algorithm used to predict the 2023 World Cup winner analyzes data from domestic matches over the past eight years.
Additionally, it integrates ‘expected’ strength estimates for each team, derived from combined odds data from international bookmakers.
The overall strength of a team is adjusted based on player ratings, which consider performance data at both club and international levels, as well as expectations in the international transfer market.
This comprehensive data feeds into a Random Forest machine learning algorithm, which assesses each team’s chances for victory across various matchups.
On June 15th, the match between Spain and Cape Verde ended in a surprising draw with neither team scoring – Credit: Getty
While the team expresses confidence in their predictions for this year’s winner, Zeileis cautions that these are merely projections subject to unexpected events, like the recent goalless draw between Cape Verde and Spain.
“All of our predictions are probabilistic and, therefore, not guaranteed,” Zeileis stated. “Although we can quantify this uncertainty through probabilities, the actual tournament outcomes are far from predetermined.”
This is not the first notable attempt to foresee the World Cup champion. In 2014, mathematician Joachim Clement accurately predicted Germany’s triumph in that year’s tournament, as well as the outcomes of three following competitions.
This effort followed Clement’s highly precise match-by-match forecasts for Euro 2008, alongside the famous Octopus, which accurately predicted Spain as the winners of the 2010 tournament — a streak that sadly ended with the cephalopod’s passing three months into the tournament.
A remarkable 113-million-year-old pterosaur fossil from northeastern Brazil has provided rare evidence of soft tissue, organic molecules, and chemical markers indicating a diet rich in cephalopods, including fish and squid.
Grice et al. integrate organic geochemical analysis and high-resolution micromineral imaging of a Cretaceous pterosaur bone in Brazil, revealing steroid biomarkers and the intricate petrification pathways that facilitated its preservation. Image credit: Grice et al., doi: 10.1016/j.isci.2026.116199.
“Our discovery paves the way for new understanding in fossil formation,” stated Professor Kriti Grice from Curtin University, lead author of the study.
In this groundbreaking research, Professor Grice and his team analyzed the left wing of an Early Cretaceous pterosaur found in the Sitio Baixa Grande locality of Brazil’s Araripe Basin.
This site, part of the Romuald Formation, is celebrated for its exceptional preservation of vertebrate fossils, particularly pterosaur species.
The wings of this pterosaur were encased in limestone concretions, preserving intricate details.
Paleontologists uncovered microstructures, including preserved collagen-like fibers, calcified soft tissue, and steroid biomarkers.
Carbon isotope analysis of cholesterol-derived compounds suggests that this pterosaur functioned as an aerial predator, likely hunting cephalopods and fish above the seas during the Cretaceous period, occupying a higher trophic level in the food web.
“This fossil serves as a time capsule. It’s not only beautifully preserved but also marks the first time we’ve detected steroid traces in a pterosaur, offering further evidence of their dietary preferences for fish and squid,” Professor Grice remarked.
“This is also the first instance of molecule recovery from a pterosaur fossil, unlocking new insights into their diet and showcasing the emerging potential of molecular paleontology,” he added.
“The preservation of steroids in fossils is incredibly rare, but our findings challenge conventional beliefs about fossil preservation,” he emphasized.
The researchers employed chemical, isotopic, and high-resolution imaging techniques to reconstruct the fossilization process.
They concluded that the decomposing carcass generated a unique chemical environment.
The acidity resulting from microbial activity led to the formation of phosphate minerals that stabilized the tissue, while subsequent carbonate lithification waves protected the site and prevented further decomposition of organic materials.
This study challenges the long-held idea that only oxygen-poor conditions facilitate exceptional fossil preservation.
Instead, the researchers propose that local oxidized and reduced conditions around the decomposing animal played a crucial role in fossil conservation.
“Our research opens new pathways for fossil preservation, shedding light on ancient life and the unique environmental conditions that enabled such remarkable fossilization,” added Professor Grice.
“This further supports the notion that microorganisms significantly contribute to this process, a finding confirmed at other fossil sites, proposing a new global Lagerstätten mechanism for extraordinary fossil preservation.”
The team’s findings are published in this week’s issue of iscience.
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Kriti Grice et al. Multistep mineralization and biomarker preservation in 113-million-year-old pterosaur bones through redox shifts in diagenesis. iscience published online June 18, 2026. doi: 10.1016/j.isci.2026.116199
A paleontologist from the Field Museum of Natural History has unveiled new insights into the fossilized remains of a baby embolomere, a crocodile-like predator that inhabited ancient rivers and swamps between 350 million and 280 million years ago. Contrary to previous beliefs, these early vertebrates did not resemble tadpoles during their infancy.
New fossil evidence suggests that embolomeres did not undergo the same metamorphosis as modern amphibians, contradicting the notion that amphibians, reptiles, and mammals evolved from tadpole-like ancestors. Image credit: Berit Godling.
“Many of us learned a simplified version of evolution in high school: that fish evolved into amphibians, which then led to reptiles, and finally to mammals,” said Jason Pardo, a paleontologist at the Field Museum.
“Our research indicates that this fundamental premise—that the first four-legged vertebrates developed like amphibians—is incorrect.”
In their recent study, Dr. Pardo and colleague Dr. Arjan Mann analyzed well-preserved fossil quadrupeds from Mason Creek Lagerstätte, Illinois, known for its exceptional soft tissue specimens.
“Mason Creek is one of the world’s best fossil sites for soft tissue and delicate small fossils,” remarked Dr. Mann.
“The fossils from Mason Creek serve as a time capsule, allowing us to gain insights that were previously thought impossible.”
Embolomeres could grow over 3 meters (10 feet) as adults and were fearsome apex predators in ancient rivers, lakes, and swamps from 350 million years ago (Carboniferous period) to 280 million years ago (Permian period).
The Mason Creek specimen offers a striking contrast; though the baby is just a few centimeters long, it provides enough evidence to challenge century-old scientific assumptions.
Notably, researchers observed that embolomere offspring lacked crucial characteristics associated with amphibian tadpoles, such as external frilled gills.
No evidence of true metamorphosis was found in these early tetrapods, despite the major changes that occur during the larval stage in modern amphibians.
Instead, the life cycles of these initial tetrapods appear to resemble those of humans or fish more than they do those of amphibians.
“We examined a range of species representing various lineages throughout the fish-to-tetrapod transition and found no evidence resembling a tadpole,” Pardo stated.
“If there are no tadpoles, then metamorphosis cannot exist.”
“If creatures like embolomeres did not display tadpole morphology or undergo true amphibian metamorphosis, then the widely accepted theory that reptiles and mammals evolved from amphibian-like ancestors must be reconsidered.”
“The narrative that metamorphosis facilitated the transition of animals from water to land is no longer valid. It’s become obsolete.”
For further details, refer to the findings published in Science.
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Jason D. Pardo & Arjan Mann. 2026. Direct development of stalk tetrapods through the fin-to-limb transition. Science 392 (6804): 1292-1296; doi: 10.1126/science.aeb7635
Single-hose air conditioners draw in hot air from outside.
Ton Hazewinkel/Getty Images
Are you thinking about buying a portable air conditioner as extreme heatwaves become increasingly frequent? It’s crucial to understand that many portable air conditioners have significant design flaws, and there are no labeling regulations to inform consumers.
When I purchased a portable air conditioner, I was unaware of this issue. The most surprising thing is that there exists a simple solution, and I believe it’s necessary for regulations to change, ensuring that portable air conditioners can’t be sold without it.
First, let’s discuss the misconception, particularly prevalent in the UK, that buying an air conditioner is a mistake. If you don’t require one, that’s perfectly fine. However, many of us live in homes that become excessively hot during heat waves, regardless of our efforts, such as keeping blinds and windows closed. Excessive heat can negatively impact health and even lead to fatalities, as it complicates tasks like studying or working. If it’s acceptable to use energy to heat a home, why is it frowned upon to use energy to maintain a cool environment?
As global temperatures rise, an increasing number of individuals are depending on air conditioners for comfort. It’s vital to minimize energy consumption from these units to reduce carbon dioxide emissions, which contribute to further warming and escalate the demand for cooling solutions.
To comprehend the inherent design flaws, it’s essential to grasp how air conditioners operate. The most efficient systems utilize split configurations. An external unit compresses the refrigerant into liquid form and heats it, which is subsequently cooled by a heat exchanger blowing outside air.
The refrigerant travels through a thin pipe to the indoor unit, where it transforms back into a gas and cools. Indoor air passes through another heat exchanger that cools it by transferring its heat to the refrigerant.
This system allows indoor air to remain inside while extracting heat from it. Split systems typically operate more quietly, with the compressor placed externally. However, these systems are usually costly built-in models, may lack space for outdoor units in upstairs rooms, and few portable split systems are available.
Some portable air conditioners draw outside air into the interior. A wide intake hose pulls in external air while expelling heated air through a separate outlet hose.
These dual-hose air conditioners are less efficient compared to split systems; the exhaust hose can inadvertently transfer heat back into the room. Wrapping this hose in insulation can mitigate some heat transfer. However, similar to split systems, they keep indoor air contained.
In contrast, single-hose portable air conditioners do not utilize intake hoses. Instead, they utilize indoor air to cool the refrigerant, which is then expelled through a single hose, resulting in the continuous influx of hot air from outside.
When a window is open, hot air enters directly. When closed, heat enters through other parts of the house, raising your indoor temperature. Consequently, the air conditioner continuously cools the incoming hot air, leading to higher energy consumption. It’s akin to adding dirt to your laundry detergent.
Additionally, single-hose units become less effective as outdoor temperatures rise, failing to cool spaces as efficiently as dual-hose units providing similar power.
These design flaws remain unaddressed in European labeling. Air conditioner specifications indicate cooling capacity in British thermal units (BTUs), which merely reflects heat transfer capacity, disregarding the continuous influx of hot air necessitating additional heat transfer.
The same applies to the Seasonal Energy Efficiency Ratio (SEER). These figures often compare units without accounting for the unique efficiency shortfalls of single-hose models, which are generally easier to install.
“Consumers struggle with two ducts and may lack the space for proper venting,” explains Chris Michael from Meaco. Thus, it’s not surprising that homeowners gravitate towards single-hose units, which are more accessible than dual-hose alternatives in the UK.
Conversely, the US has improved labeling standards. Two measures now account for the hot air entering the room and the heat expelled via the exhaust hose. The Seasonally Adjusted Cooling Capacity (SACC), often declines by over a third compared to unadjusted capacity figures.
Moreover, the overall energy efficiency ratio (CEER) provides additional insights into the efficiency of dual-hose air conditioners.
Nonetheless, these metrics still do not fully inform buyers. Both SACC and CEER measure efficiency under specific conditions, often assuming an outdoor temperature of 28°C (82.4°F) for most operation time, escalating to 35°C (95°F) for brief intervals. This is misleading, as cooling demand spikes at 40°C (104°F).
Interestingly, many single-hose air conditioners are essentially dual-hose systems with a single hose. Adding an additional hose and attachment resolves this defect. At least one manufacturer, GE, offers conversion kits for certain single-hose models, boasting increased cooling capacities. Their advertising claims this could triple cooling efficiency.
Numerous individuals have undertaken DIY conversions—from simple tape and cardboard solutions to 3D printed components. Feedback indicates it’s a game-changer; I experienced this firsthand during the UK’s May heatwave, concluding it significantly enhanced my comfort.
Therefore, in my opinion, the labeling of portable air conditioners in the UK and EU must evolve to accurately represent their performance during peak heatwave conditions. It’s both strange and misleading for a single-hose air conditioner to receive an “A” rating for efficiency.
Ideally, the sale of single-hose models should be prohibited entirely. Portable air conditioners should only be sold as dual-hose units, with the option for single-hose operation when dual-hose setups are impractical. In essence, single-hose air conditioners should not be sold without an accompanying conversion kit. Michael from Meaco indicates they are contemplating introducing such a model by 2027.
I attempted to ascertain who regulates portable air conditioners in the UK, but received no information. The Department of Energy Security and the Department of Net Zero did not respond to inquiries, nor did the Energy Saving Trust. However, I hope someone in a position of influence reads this. Achieving climate victory through improved air conditioning standards is possible.
Researchers have uncovered a mysterious substance on the surfaces of both Pluto and Saturn’s moon Titan, but its identity remains elusive.
Titan’s dense atmosphere poses significant challenges in surface exploration. Identifying this enigmatic compound is crucial for understanding the moon’s intricate chemistry. Titan stands out as a prime candidate in the solar system for the search for extraterrestrial life, making the understanding of its chemical structure vital.
Astronomers utilize spectroscopy—an essential tool that analyzes the light wavelengths absorbed, reflected, and emitted by various chemicals—to study the organization of distant celestial bodies.
Bruno Besar and researchers at the Paris Observatory made significant findings using data from the James Webb Space Telescope (JWST). They discovered that a specific range of light wavelengths was being absorbed by a substance on Titan’s surface, which was also observed on Pluto, albeit across a broader spectrum.
At first glance, Titan and Pluto appear vastly different. Titan experiences much warmer temperatures, has a liquid ocean on its surface, and possesses a denser atmosphere compared to Pluto’s. However, the atmospheric chemistry reveals similarities, as “Both atmospheres predominantly consist of nitrogen and methane, leading to chemical reactions that generate haze particles that settle as snow,” explained Besar. This process is likely responsible for the formation of the unidentified compounds.
The researchers contrasted the spectral signatures detected on these two worlds with numerous spectra from both astronomical observations and lab experiments representing known compounds in Titan’s atmosphere, as well as forms of ice that may exist on both surfaces. None were found to match the mysterious signature.
Nevertheless, they identified several close candidates that, if slightly modified or combined with other molecules, could potentially explain the unknown compound. Notably, there are observable differences in the material’s characteristics between Pluto and Titan, suggesting variations in particle size as well. “There are several possibilities, but they aren’t straightforward compounds,” Besar indicated. “Whatever it is, it would be groundbreaking.”
To further investigate this intriguing discovery, a comprehensive three-pronged strategy is in place. First, researchers have acquired additional data from JWST, which may aid in pinpointing the distribution of materials on Titan’s surface. Geological features could offer valuable insights. Second, laboratory experiments are being conducted to replicate the spectral signature and identify its components. Finally, NASA’s Dragonfly spacecraft, slated for launch in 2028 and landing on Titan in 2034, holds the potential for groundbreaking discoveries.
Kesennuma Fishing Port: Aftermath of the 2011 Tohoku Earthquake
Carolyn Cole/Los Angeles Times via Getty Images
Just 15 minutes after the powerful magnitude 9 Tohoku earthquake struck Japan on March 11, 2011, nearly all of the country shifted eastward by approximately half a centimeter. This seismic shift resulted from incredibly strong seismic waves that traveled 5,800 kilometers deep into the Earth and then rebounded to the surface.
While a 5-millimeter shift may seem trivial amid the devastation, it is crucial to understand that it occurred over a staggering distance of 3,000 kilometers. This distance is nearly seven times the length of the main rupture line of the earthquake, marking it as the largest recorded slip of its kind.
Notably, the unique timing and pattern of this event are significant. According to Park Sun Young of the University of Chicago, “No typical earthquake dynamics occurred at that precise moment, and a similar 5-millimeter eastward shift occurred almost simultaneously throughout most of Japan.”
The alterations were remarkable, extending not just from north to south but throughout the entire nation and even affecting the surrounding oceans.
“It’s not merely a singular ‘edge’ moving,” Park explained. “The eastward shift is widespread across Japan, particularly where GPS stations are present. With a similarly high density of sensors on the ocean floor, we could ascertain more precisely how widespread this offshore movement is. However, on land, this shift is observable almost universally across Japan.”
By analyzing extensive GPS and seismic data collected during the disaster, Park and his colleagues investigated how such massive shifts were instigated and why the rupture transpired 15 minutes post the main shock.
Earthquakes typically generate waves that penetrate deep into the Earth and reflect off its core; however, these waves usually lose strength by the time they resurface. In the Tohoku event, the main shock was so powerful that, despite the weakening of the original wave, it remained robust enough to induce tremors nationwide, as four adjacent tectonic plates moved synchronously.
“We surmise that the intense shaking from the initial Tohoku earthquake weakened the plate boundaries, rendering them more prone to movement when these nuclear reflection waves reached them,” states Professor Park.
This incident highlights a newly identified post-earthquake rupture mechanism, suggesting a need for awareness of potential seismic hazards from waves that travel deeper and over much larger distances following significant earthquakes, potentially triggering additional seismic events.
Further research is essential to understand the implications of this phenomenon in other global regions susceptible to similar seismic vulnerabilities, as noted by Robin Lee from the University of Canterbury, New Zealand.
“This illustrates that major earthquakes can instigate widespread delayed faulting within minutes and across a significantly larger area than previously expected,” Lee stated.
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