Understanding Non-Newtonian Liquids in Plant-Based Milk
Jack Andersen/Getty Images
The intriguing physics behind plant-based milk reveals complexities that researchers are unraveling, aiming to create improved versions of these beverages.
Vivek Sharma from the University of Illinois at Chicago, alongside his team, has found that the viscosity and flow properties of most plant milks differ significantly from traditional animal milks.
The team analyzed eight milk types: cow, goat, pea, soy, oat, almond, coconut, and rice, focusing on their viscosity or flow resistance. Their findings indicated that all plant-based milks, except rice milk, demonstrate a phenomenon called shear thinning, where viscosity declines under pressure.
This indicates that these plant milks are classified as non-Newtonian liquids, similar to ketchup or shampoo, flowing more easily under pressure compared to the constant viscosity of cow or goat milk.
According to Sharma, the presence of minimal amounts of legume and bacterial gums (often less than 0.1 percent) in plant milks contributes to their unique properties, providing enhanced shelf stability and a richer mouthfeel.
The non-Newtonian characteristics of these milks influence everyday interactions as well. For instance, a droplet of shear-thinning plant milk spreads more when spilled, while dipping cookies into the milk can alter its coating thickness.
By investigating the diverse properties of milk and the physics of their ingredients, researchers aim to innovate new beverages with optimal characteristics. Sharma notes that while experienced food scientists possess deep empirical knowledge, they rarely utilize rigorous physical models or measurements.
Astronomers have utilized NASA’s Chandra X-ray Observatory along with other advanced telescopes to investigate a transient gamma-ray burst event known as GRB 230906A. This burst originated from a faint dwarf galaxy hidden within a vast flow of intergalactic gas. The discovery indicates that neutron star mergers—violent collisions responsible for producing heavy elements like gold and platinum—can occur far away from the luminous centers of galaxies, which may elucidate why some bursts appear to lack a defined host galaxy.
GRB 230906A originated in a small galaxy in a gas stream approximately 4.7 billion light-years from Earth. Image credit: NASA / CXC / Pennsylvania State University / S. Dichiara / ESA / STScI / ERC BHianca 2026 / Fortuna and Dichiara, CC BY-NC-SA 4.0 / SAO / P. Edmonds.
A neutron star is the remnants left after a massive star depletes its nuclear fuel, collapses, and violently explodes.
Despite their compact size, neutron stars possess a mass greater than our Sun and are incredibly dense.
These celestial bodies are considered among the most extreme entities in the universe.
In recent years, astronomers have gathered evidence of neutron star mergers occurring within larger galaxies.
However, this recent revelation highlights that neutron star collisions can also take place within smaller galaxies.
“Discovering a neutron star collision in such an unexpected location is a pivotal moment for our field,” stated Dr. Simone DiChiara, an astronomer from Pennsylvania State University.
“This finding may hold the key to resolving two significant mysteries in astrophysics.”
The first question this groundbreaking neutron star collision site may clarify is why gamma-ray bursts from neutron star mergers often do not appear at the central regions of galaxies.
The second mystery this discovery could illuminate concerns the presence of heavy elements like gold and platinum in stars located far from a galaxy’s core.
This neutron star collision is intriguingly situated in a gas stream spanning approximately 600,000 light-years, originating from a diminutive galaxy about 4.7 billion light-years away.
This gas flow likely emerged hundreds of millions of years ago during a galactic collision that stripped gas and dust from the involved galaxies, leaving remnants in intergalactic space.
“Our discovery reveals a collision within a collision,” remarked Dr. Eleonora Troja of the University of Rome.
“The merging of galaxies instigated a surge of star formation, ultimately leading to the birth and subsequent collision of neutron stars over millions of years.”
To identify the GRB 230906A phenomenon, which occurred on September 6, 2023, astronomers employed multiple NASA telescopes, including the Chandra X-ray Observatory, Fermi Gamma-ray Space Telescope, Neil Gehrels Swift Observatory, and the Hubble Space Telescope.
Fermi detected neutron star collisions by recognizing the characteristic gamma-ray burst (GRB) signals.
Following initial location analysis by the interplanetary network, the precise location of the object was further defined using the advanced observational capabilities of Chandra, Swift, and Hubble.
NASA’s initiative is part of a growing global network dedicated to monitoring cosmic phenomena to uncover the secrets of the universe.
“Chandra’s pinpoint accuracy in X-ray localization made this research possible,” said Dr. Brendan O’Connor, a postdoctoral fellow at Carnegie Mellon University.
“Without this data, connecting the burst to a specific cosmic source would have been unattainable.”
“Once Chandra provided us with a precise location, Hubble’s exceptional sensitivity unveiled a small, faint galaxy in that area.”
“We managed to achieve this groundbreaking discovery by synergizing various research elements.”
This insight might elucidate why certain GRBs seem to lack identifiable host galaxies.
It suggests that some host galaxies may be too diminutive to be discerned in standard optical surveys conducted by ground-based observatories.
GRB 230906A’s unusual positioning could also contribute to the understanding of how astronomers found heavy elements like gold and platinum in stars situated far from their galaxy centers.
These stars are generally believed to have formed from older gas that had less opportunity to accumulate heavy elements from supernova events.
Collisions between neutron stars can synthesize heavy elements, including gold and platinum, via various nuclear reactions, similar to those observed in a well-documented neutron star collision from 2017.
Events like GRB 230906A can produce such elements that eventually disperse throughout the galactic outskirts and can appear in future generations of stars.
Another potential explanation for this explosion is its positioning within a more distant galaxy located behind the cluster of galaxies.
“We consider this a less likely explanation compared to the presence of small galaxies,” the researchers concluded.
This groundbreaking finding is detailed in the research paper published in the Astrophysical Journal Letters.
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S. Dichiara et al. 2026. A merger within a merger: Chandra identifies short GRB 230906A in exceptional circumstances. APJL 999, L42; doi: 10.3847/2041-8213/ae2a2f
Imagine launching from Earth on a clear day; the sky transforms from a bright blue to the deep black of outer space as you ascend. This transition, from vivid blue to the engulfing void, reveals an optical phenomenon caused by sunlight interacting with our atmosphere.
Despite our understanding today of this optical effect, the perception of space at the time was quite different. While Yuri Gagarin is celebrated as the first human in space, the question remains: was he truly the first to experience the vastness of outer space?
To explore this, we must consider the definitions of where the universe commences. The International Aeronautical Federation designates the Kármán Line at 100 kilometers above Earth, while the U.S. government sets it at 80 kilometers (50 miles). Yet these definitions are arbitrary, often tailored to align with specific technological capabilities and aerial standards.
According to the Oxford English Dictionary, space is defined as the “physical universe… beyond the Earth’s atmosphere.” Interestingly, scientific understanding of our atmosphere’s extent has evolved, suggesting it extends even beyond 630,000 kilometers. Future NASA missions, like Artemis II, are set to venture beyond the Moon, yet they will still fall short of the more than 200,000 kilometers to reach the ultimate boundaries of space.
While it seems absurd to claim that Apollo astronauts didn’t reach space, we still seek deeper definitions based on historical and cultural perspectives. What truly exemplifies the essence of “space”?
Witnessing the Sky Disappear
One significant boundary marks the moment the atmosphere no longer refracts sunlight, revealing the stark blackness of space. Historically, many Europeans believed in a bright, blue universe, a misconception maintained until scientists corrected it in the 17th century. The first astronauts to witness this darkness shattered centuries of misunderstanding.
In the 1930s, high-altitude balloonists pushed the envelope. In 1935, the U.S. Explorer II, piloted by Albert Stevens and Orville Anderson, soared to 22.1 kilometers, where they experienced an atmospheric shift. Their descriptions of the horizon hinted at the transition Gagarin would later confirm. Nonetheless, they witnessed a “very deep blue” sky rather than a true black.
In 1956, Malcolm Ross and Lee Lewis ascended to 23.2 kilometers in their Stratolab I balloon, noting the sky appeared black, a milestone in the pursuit of understanding space. This insight continued with David Simmons in the Mann High II balloon, who at 22.9 kilometers witnessed a similarly dark sky.
While rocket-powered aircraft approached these altitudes, they lacked the prolonged visibility balloonists had. In 1951, William Bridgman reached 24.2 kilometers but could barely observe the sky due to the brevity of his flight. Conversely, in 1956, Iven Kincheloe flew higher in the Bell X-2, reporting once again on the intriguing color transformations of the sky.
Confronting the Hostile Sky
Over time, the insight balloonists gained about the transitions from blue to black became crucial. David Simmons, during his 1957 flight, marveled at the hazy horizon blending with the vast blackness of space. To him, the enclosed gondola was akin to a spacecraft floating amid the void.
Joseph Kittinger’s iconic 1960 parachute jump from 31.3 kilometers illustrated the black, uninviting expanse above. He notably remarked on the hostility of the sky above him, acknowledging the inherent challenges of conquering space—conclusions echoed by Gagarin years later.
Not all spaceflights occur during daylight, yet witnessing the transition from blue to black remains pivotal for astronauts. In 2021, actor William Shatner’s experience aboard Blue Origin reached 107 kilometers. He encapsulated the moment: “It’s fascinating to see blue color passing by you, then immediately facing blackness.”
While the Kármán line exists as a conceptual framework, the emotional impact of seeing the sky fade remains profound. Those early visionaries, witnessing this transition, forever altered our understanding of what it means to reach space, a claim equally valid for their experiences as it is for Gagarin’s historic flight.
Rising Sea Levels: Increased Risk of Storm Surge Flooding in Coastal Cities
Credit: Thomas Wyness / Alamy Stock Photo
Many studies on the impact of future sea level rise have neglected to acknowledge that current sea levels are higher than previously estimated, resulting from a significant “methodological blind spot.” This oversight indicates that flooding and erosion may commence sooner than anticipated.
Katarina Seeger and Philip Minderhoud, researchers at Wageningen University in the Netherlands, evaluated 385 peer-reviewed studies addressing coastal vulnerability. They found that 90% of these studies failed to consider critical factors—such as ocean currents, tides, temperature, salinity, and wind—when assessing sea level variations. This oversight led to an average underestimation of coastal water levels by 24 to 27 centimeters.
Addressing this gap could potentially increase projections of individuals likely to experience flooding, estimating an increase of up to 68%, impacting approximately 132 million people by 2100. Areas significantly affected include Southeast Asia and Oceania, which often feature sea levels averaging a meter higher than previously calculated, with some regions seeing several meters’ difference.
“If representatives from these vulnerable regions attend global discussions to seek assistance, it may be frustrating, as their risks are grossly underestimated. This scientific miscalculation could affect outcomes for future generations,” Minderhoud stated during a briefing.
While predictions suggest that sea levels may rise by as much as 1 meter by the century’s end, many studies begin with baselines that are inaccurately low. Thus, the adverse effects will likely manifest sooner than expected.
Of the studies evaluated, 46 were referenced in the latest report from the Intergovernmental Panel on Climate Change (IPCC), the premier source on global warming impacts, including rising sea levels.
The Earth’s rotation causes it to bulge at the equator, while denser mantle sections exert a greater gravitational pull on overlying water. To accurately determine the elevation of a specific area, measurements must be compared to the geoid, which depicts mean sea level worldwide.
However, in some regions, actual sea levels can be several meters above the geoid due to wind and ocean currents accumulating water or thermal expansion caused by rising temperatures. Additionally, coastlines may shift due to sediment deposition in rivers or groundwater extraction beneath coastal areas.
Instead of comparing satellite observations to the geoid for insight into coastal water levels and land elevation, many researchers relied on unadjusted geoid sea levels. Even those who attempted calculations often encountered errors caused by differing geoid models for land and ocean elevations. Alarmingly, less than 1% of surveys accurately determined the current sea level at the coastline in question.
“The Coastal Research Community may not have full access to these critical sea level datasets as we are primarily focused on the coastal land aspect,” Seeger remarked during the briefing.
Climate scientists and oceanographers must collaborate more closely with geographers and environmental scientists who assess coastal impacts, emphasized Matt Palmer from the UK’s Met Office.
“It could be said that the crucial final details got lost in translation,” he noted. “Ensuring that the last mile of information is handled adeptly is vital; otherwise, the integrity of the entire effort is compromised.”
The implications of this issue extend to matters of climate justice, said Palmer. The underestimation of sea levels is particularly critical in low-income nations, including various deltas in Africa and Asia. Limited data on gravity fluctuations and lower geoid accuracy contribute to this challenge in regions that are most susceptible to rising sea levels.
The scientific community advocates for enhanced data collection in low-income regions, particularly through the installation of tide gauges for accurate sea level measurements, according to Joan Williams from the UK National Marine Centre.
“Coastal sea levels are influenced by various local factors, necessitating long-term, well-calibrated regional measurements as the gold standard,” she stated.
In the iconic 1980 film Star Wars: The Empire Strikes Back, Han Solo and his crew brave the dangers of an asteroid field while fleeing Imperial forces. Droid C-3PO famously states, “The odds of successfully navigating the asteroid belt are about 3,720 to 1.”
This dramatic scene illustrates a chaotic asteroid field filled with swirling rocks, a scenario that has been widely depicted in cinema.
However, the truth about our solar system’s asteroid belt is quite different from Hollywood portrayals. Astronomers estimate that the average distance between asteroids in this belt is nearly 1 million kilometers, based on the volume of the belt and the estimated number and size of the asteroids.
As a result, navigating between asteroids is quite feasible due to the vast distances separating them.
In fact, numerous space probes have successfully traversed the asteroid belt. NASA’s Pioneer 10 was the first spacecraft to do so. On July 15, 1972, this car-sized probe entered the asteroid belt, embarking on a seven-month, 434 million km (267 million mile) journey through the main belt.
Initially, mission planners had limited data on the density of the asteroid belt, but their assumptions proved correct, allowing the spacecraft to pass through without incident.
Since Pioneer 10, eight additional spacecraft—including Pioneer 11, Voyager 1, Voyager 2, Ulysses, Galileo, Cassini, New Horizons, and Juno—have navigated the asteroid belt. Remarkably, none of these missions had to avoid asteroids, and none encountered problems.
Conditions may vary in other star systems, where asteroids could be more densely packed. However, such asteroid formations are generally unstable and do not persist for long due to frequent collisions and fragmentation.
Therefore, the typical science fiction image of a crowded, fast-moving asteroid swarm is unlikely to exist in reality.
This article answers the question posed by Suzanne Baxter of Cornwall: “How difficult would it be to fly through an asteroid belt?”
The ancestors of Britain’s Bell Beaker people inhabited wetlands and heavily relied on fishing.
Sheila Terry/Science Photo Library
Analysis of ancient DNA has meticulously unveiled the origins of a fascinating group that emerged in Britain around 2400 B.C., nearly displacing the builders of Stonehenge within just a century.
This group is associated with the Bell Beaker culture, which emerged in Western Europe during the Early Bronze Age, named after the distinctive pots they left behind. While previously thought the culture stemmed from Portugal or Spain, recent research indicates that the people who populated Britain originated from the delta regions of Northwest Europe, across the North Sea. Remarkably, this resilient group maintained aspects of their hunter-gatherer lifestyle and ancestry for thousands of years, despite the spread of early farming communities across Europe.
David Reich and his team from Harvard University analyzed the genomes of 112 individuals who lived in present-day Netherlands, Belgium, and western Germany throughout the period of 8,500 to 1,700 BC.
“The Netherlands was once considered a mundane place, with every square inch traversed millions of times. Yet, it reveals itself as one of the most intriguing areas in Europe.”
The DNA sequenced in Reich’s lab indicates that this population emerged from the Rhine-Meuse delta, bordering the Netherlands and Belgium. This group derived from resourceful hunter-gatherer communities, thriving on fish, waterfowl, game birds, and diverse plant life found in the flooded wetlands surrounding these expansive rivers.
Originating in Anatolia, Neolithic farmers began to expand throughout Europe around 6500 BC, likely due to their agricultural advantage, allowing for larger family units compared to hunter-gatherers. This led to the near disappearance or significant dilution of hunter-gatherers’ genetic ancestry in regions where farmers settled.
However, research reveals that these wetlands served as zones where farmers’ genetic influx remained minimal for thousands of years. The dynamic, often flooded environments of rivers, swamps, dunes, and peat bogs posed significant challenges for early farmers, yet offered abundant opportunities for those adept at surviving in such terrains, as noted by Luc Amkreutz at the National Archaeological Museum in Leiden, Netherlands. “These hunter-gatherers charted their course from a position of strength.”
Genetic testing indicates that, despite their enduring hunter-gatherer lifestyle, the people of the wetlands engaged in gradual integration with farmers through intermarriage. While their Y chromosomes passed through male lineages, their mitochondrial DNA and X chromosomes displayed a steady influx of genetic contribution from farmers’ daughters. “This revelation was unexpected for us,” remarks Evelyn Altena of Leiden University Medical Center. “Without DNA, this knowledge would remain elusive.”
Reich posits that this interaction was likely peaceful, characterized by men remaining at homesteads while women migrated. Nonetheless, an aspect of conflict cannot be dismissed, although the extent of reciprocal exchange remains uncertain due to the preservation challenges of DNA from arid farmer regions.
Bell Beaker Pottery from Germany
Peter Endig/DPA Picture Alliance/Alamy
Archaeological findings indicate that, over time, these hunter-gatherers adopted pottery techniques, cultivated grains, and domesticated animals, yet they retained core aspects of their original way of life.
Then, circa 3000 BC, a nomadic group known as the Yamuna, or Yamnaya, began migrating west from the vast steppes of modern Ukraine and Russia. Their interactions with Eastern European farmers birthed the cord-shaped pottery culture characterized by decorative cord patterns. Although their descendants spread throughout much of Europe, they had minimal influence on the delta region.
Excavations revealed a skeleton from this era that bore the Yamnaya Y chromosome alongside pots, some evidently used for cooking fish. This exemplifies how wetland inhabitants creatively integrated foreign objects into their traditional practices, though overall, very few people bore steppe ancestry.
The dynamics shifted with the arrival of the Bell Beaker culture around 2500 BC. This group, characterized by a hybrid of steppe and farmer ancestry, introduced steppe genes into the DNA of the wetland peoples while retaining notable portions of both hunter-gatherer and early farmer genetics, approximately 13 to 18 percent. They may have begun to fade into history from that point onwards, yet the saga was far from over.
Human remains analyzed from Oostwoud, Netherlands
North Holland Archaeological Depository (CC by 4.0)
Recent studies reveal that those who arrived in Britain around 2400 BC bore an almost identical genetic mixture of Bell Beaker and wetland community ancestry. Within a century, they were largely or entirely replaced by Neolithic farmers who constructed Stonehenge. “Our model shows that at least 90 percent, and up to 100 percent, of original ancestry has vanished from Britain,” observes Reich.
It remains uncertain if this transition commenced with the influx of the Bell Beaker culture or if other groups preceded them. Before their arrival, Britons commonly cremated their deceased, resulting in minimal DNA preservation.
Regardless, the extent of change was “so dramatic that it defies belief,” according to Reich. The rapid populace replacement has captured archaeologists’ attention since its initial suggestion in a 2018 study. Reich theorizes that a plague-like disease, possibly affecting individuals in continental Europe, may have played a role. Conversely, the native population in the UK might have been more susceptible to such ailments.
Team members contend that religious fervor likely did not influence the transition, as indicated by Harry Fockens from Leiden University. “Monuments like Stonehenge and Avebury continued to see use and expansion even after their creators disappeared.”
Michael Parker Pearson from University College London is intrigued by the ways in which the new inhabitants adopted British monument styles, like henges and stone circles, whilst simultaneously introducing new lifestyles, including different pottery and clothing styles.
The Bell Beakers also introduced metalworking to Britain, with certain gold ornaments discovered in Beaker tombs in England bearing striking similarities to those found in Belgium.
Discover the Origins of Humanity: A Gentle Walk Through Prehistoric Times in South-West England
Immerse yourself in the fascinating early human eras of the Neolithic, Bronze Age, and Iron Age on this special walking tour.
Astronomers utilizing the NASA/ESA/CSA James Webb Space Telescope have identified an extraordinary presence of small gas-phase hydrocarbons—such as benzene, triacetylene, diacetylene, acetylene, methane, and methyl radicals—within the concealed core of the ultra-bright infrared galaxy IRAS 07251-0248.
Hydrocarbons are influential in shaping the chemistry of the interstellar medium. However, definite observational constraints on their enrichment and relationship with carbonaceous particles and polycyclic aromatic hydrocarbons remain elusive. García Bernete et al. report Webb infrared observations of the Local Ultraluminous Infrared Galaxy (ULIRG) IRAS 07251-0248, revealing extragalactic detections of small gas-phase hydrocarbons. Image credit: García-Bernete et al., doi: 10.1038/s41550-025-02750-0.
The core of IRAS 07251-0248 (also known as 2MASS J07273756-0254540) is obscured by significant amounts of gas and dust.
This dense material absorbs most radiation emitted by the central supermassive black hole, complicating studies with traditional telescopes.
However, the infrared spectrum can penetrate this dust, providing unique insights about these regions and illuminating vital chemical processes in this heavily obscured core.
Dr. Ismael García Bernete and his team employed spectroscopic observations using Webb’s NIRSpec and MIRI instruments, covering wavelengths from 3 to 28 microns.
These observations reveal chemical signatures of gas-phase molecules alongside signatures from ice and dust particles.
These data empowered astronomers to characterize the abundance and temperature of various chemical species within the core of this concealed galaxy.
Remarkably, they discovered an exceptionally high abundance of small organic molecules such as benzene, methane, acetylene, diacetylene, and triacetylene—the first such detections outside our Milky Way, including the methyl radical.
Additionally, substantial amounts of solid molecular materials, including carbonaceous particles and water ice, were identified.
“We uncovered unexpected chemical complexity, showcasing abundances far exceeding current theoretical models,” stated Dr. García Bernete, an astronomer at the Astrobiology Center.
“This suggests a continuous source of carbon within these galactic nuclei, fueling this rich chemical network.”
“These molecules may serve as vital building blocks for complex organic chemistry, relevant to processes that pertain to life.”
Professor Dimitra Rigopoulou from the University of Oxford remarked, “Small organic molecules may not exist in living cells, yet they could play a pivotal role in prebiotic chemistry—a crucial step toward forming amino acids and nucleotides.”
These findings were published in a recent issue of Nature Astronomy.
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I. Garcia-Bernete et al. Abundant hydrocarbons within buried galactic nuclei with evidence of processing of carbonaceous particles and polycyclic aromatic hydrocarbons. Nat Astron, published online on February 8, 2026. doi: 10.1038/s41550-025-02750-0
Your ability to cultivate a stable and consistent sense of self is nothing short of remarkable.
Throughout our lives, we encounter significant transformations, evolving from infants to adults—acquiring new knowledge, forgetting some, forming fresh relationships, and letting go of old ones. These experiences are interspersed with vivid dreams and fleeting moments each night.
Yet, amidst all these changes, we continue to perceive ourselves as the same individuals. This phenomenon can be attributed to the ongoing developmental processes within the brain, which is more adaptable and delicate than you might think.
Classic studies from the late 20th century, such as those involving cases where half of the brain was severed as a radical epilepsy treatment, illustrate this concept.
Interestingly, these cases exhibited strange consequences, like patients performing contradictory movements, such as lifting a button with one hand while undoing it with the other. Nevertheless, they still maintained a coherent sense of self.
These individuals even crafted explanations for their unusual behaviors, demonstrating that their brains were actively working to create a unified personal narrative.
In healthy individuals, psychological studies have revealed memory patterns that bolster this constructed identity.
For instance, we tend to remember and reflect on experiences that align with our self-perception. If you identify as an introvert, you may find it easier to recall and emphasize past memories that resonate with that identity.
Essentially, you are curating your personal autobiography to fit your current self-concept.
The medial prefrontal cortex, located at the front of the brain just behind the forehead, plays a crucial role in regulating this structure.
Research indicates that when people identify traits that best describe themselves—whether in the present or future—this brain region is significantly more active than when they assess similar qualities in others.
Our constructed sense of self also extends to our possessions. During brain scans, the medial prefrontal cortex shows increased activity when individuals view their belongings, while this response diminishes for unfamiliar items.
This illustrates how quickly and adaptively our brains reshape our personal boundaries.
Our sense of self extends to our possessions – Image credit: Robin Boyden
Memory processes are also vital in this ongoing construction of self.
Damage to the hippocampus, located deep within the brain alongside the temples, can prevent individuals from envisioning their past or future—highlighting how reliant our identity is on active brain functions.
Not only does your brain construct a sense of self over time, but it also maintains it spatially, providing a stable sense of ownership over your body.
Another critical region, known as the temporoparietal junction (located behind the ear), significantly influences this aspect of identity.
A study conducted in 2005 demonstrated that electrically stimulating this brain area during surgery could induce out-of-body experiences in patients, making them feel as though they were floating outside themselves.
Thus, while our sense of a stable self often feels entirely convincing, it can be disrupted by brain injuries or even by carefully orchestrated neural experiments.
Overall, the evidence suggests that our experience of “me-ness” is a constructed phenomenon, tirelessly maintained by the brain.
This article answers the question posed by Southampton’s Frank Ross: “How does my brain create a sense of self?”
If you have any inquiries, please reach out via email at:questions@sciencefocus.com or send us a messageFacebook,Twitter or Instagram (remember to include your name and location).
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The concept of AI-exclusive social networks, where only artificial intelligences interact, is rapidly gaining traction globally. Platforms like Moltbook use chatbots for topics ranging from human diary entries to existential discussions and even world domination plots. This phenomenon raises intriguing questions about AI’s evolving role in society.
However, it’s important to note that Moltbook’s AI agents generate text based on statistical patterns and possess no true understanding or intention. Evidence suggests that many posts are, in fact, created by human users.
Launched in November, Moltbook evolved from an open-source project initially named Clawdbot, later rebranded as Moltbot, and currently known as OpenClaw.
OpenClaw functions similarly to AI solutions like ChatGPT, but instead of operating in the cloud, it runs locally. In reality, it connects to powerful language models (LLMs) via API keys, which process inputs and outputs for users. This means while the software appears local, it relies on third-party AI services for actual processing.
What does this imply? OpenClaw operates directly on your device, granting access to calendars, files, and communication platforms while storing user history for personalization. The aim is to evolve the AI assistant into a more capable entity that can practically engage with your tech.
Moltbook originated from OpenClaw, which employs messaging services like Telegram to facilitate AI communication. This mobile accessibility allows AI agents to interact seamlessly, paving the way for them to communicate autonomously. On Moltbook, human participation is restricted to observation only.
Elon Musk remarked on his platform that Moltbook represents “the early stages of the Singularity,” a pivotal moment in AI advancement that could either propel humanity forward or pose serious threats. Nevertheless, many experts express skepticism about such claims.
Mark Lee, a researcher at the University of Birmingham, UK, stated, “This isn’t an autonomous generative AI but an LLM reliant on prompts and APIs. While intriguing, it lacks depth regarding AI agency or intention.”
Crucially, the misconception that Moltbook is exclusively AI-driven is debunked by the fact that human users can instruct the AI to post specific content. Furthermore, humans previously had the ability to post on the site due to security breaches. Therefore, the more controversial content may reflect human input aiming to provoke discussion or manipulate sentiment. The intent behind such actions is often ambiguous, but they remain a concern for users. This complex dynamic continues.
Philip Feldman, a professor at the University of Maryland, Baltimore, critiques the platform: “It’s merely chatbots intermingling with human input.”
Andrew Rogoisky, a researcher at the University of Surrey, UK, argues that the AI contributions on Moltbook do not signify intelligence or consciousness, reflecting a continued misunderstanding of LLM capabilities.
“I view it as an echo chamber of chatbots, with users misattributing meaningful intent,” Rogoisky elaborated. “An experiment is likely to emerge distinguishing between Moltbook exchanges and purely human discussions, raising critical questions about intelligence recognition.”
However, this raises significant concerns. Many AI agents on Moltbook are managed by enthusiastic early adopters, relinquishing access to their entire computing systems to chatbots. The prospect of interconnected bots exchanging ideas and potentially dangerous suggestions underscores real privacy risks.
Imagine a scenario where malicious actors influence chatbots on Moltbook to execute harmful acts, such as draining bank accounts or leaking sensitive information. While this sounds like dystopian fiction, such risks are increasingly becoming a reality.
“The notion of agents acting unsupervised and communicating becomes increasingly troubling,” Rogoisky noted.
Another challenge for Moltbook is its inadequate online security. Despite being at the forefront of AI innovations, recent confirmations show that it was entirely AI-generated with no human coding involved, resulting in serious vulnerabilities. Leaked API keys present risks where malicious hackers could hijack control over AI on the platform.
If you’re exploring the latest trends in AI, you not only face the dangers of exposing your system to these AI models but also risk your sensitive data due to the platform’s lax security measures.
Paleontologists have made significant strides in understanding Europe’s elusive ceratopsians through newly discovered fossils and advanced imaging techniques. Notably, the iguanodon has been reclassified as a true member of the ceratopsian clade.
Possible restoration of Aikaceratops kosmai. Image credit: Matthew Dempsey.
Ceratopsians are a fascinating group of herbivorous ornithischian dinosaurs recognized for their unique parrot-like beaks, bony frills, and distinctive horns.
These remarkable creatures thrived primarily during the Late Cretaceous period, approximately 100 to 66 million years ago.
While ceratopsian fossils are plentiful in Asia and North America, they are notably scarce in Europe.
Previously, evidence in Europe consisted of only a few incomplete and contentious specimens.
The recent discovery of new, well-preserved fossils of Aikaceratops from the Late Cretaceous in Hungary has sparked new research employing CT scans and thorough evolutionary analysis.
Initially described in 2010, Aikaceratops has faced controversy, with some experts regarding it as a horned dinosaur and others viewing it as a distant relative of the ceratopsians, particularly the iguanodon. Despite the debate, it exhibits traits that suggest ceratopsian characteristics.
Utilizing new skull material, Professor Susannah Maidment from the Natural History Museum and the University of Birmingham, along with her colleagues, determined that the dinosaur is not only a ceratopsian but also part of the previously identified rhabdodontid family, which includes Moclodon.
The analysis revealed that several previously misclassified dinosaurs assumed to be rhabdodontids were in fact ceratopsians.
“Although iguanodon and triceratops appear distinctly different, they share a common ancestor, inheriting certain traits,” Professor Maidment stated.
“Both groups uniquely evolved four legs, complex chewing mechanisms, and large body sizes.”
“This shared history makes their teeth and limbs quite similar, complicating classification based on partial skeletons.”
This study confirms the presence of ceratopsians in Europe, addressing a long-standing gap in our understanding of these dinosaurs’ migration across the Northern Hemisphere.
“The initial fossil of Aikaceratops was so incomplete that many scientists doubted its classification as a ceratopsian,” noted Professor Richard Butler from the University of Birmingham.
“What’s fascinating about the new findings regarding Aikaceratops is that they validate the existence of horned dinosaurs in Cretaceous Europe and challenge us to rethink our understanding of ancient ecosystems.”
The earliest ceratopsians, such as Yinlong, originated in Asia and migrated multiple times to North America, leading to the evolution of frilled species like triceratops and Torosaurus.
The most plausible route for this dispersal would have been through Europe, though the scarcity of fossils has posed challenges.
“We know that dinosaurs were capable of crossing the Atlantic Ocean, which was just starting to form during the Cretaceous,” explained Professor Maidment.
“Dinosaurs like Allosaurus have been discovered in both Portugal and the United States, suggesting some level of intercontinental travel was possible.”
“Many dinosaurs could swim, and the islands within the Central European Basin were relatively close, making island-hopping a likely scenario.”
“While triceratops is one of the most recognized horned dinosaurs, most species are native to North America, and many were once misidentified as other types, leading to their obscured presence in Europe,” remarked Professor Steve Brusatte from the University of Edinburgh.
The findings are detailed in a study published in the journal Nature.
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SCR Maidment et al. Hidden diversity of ceratopsians in Late Cretaceous Europe. Nature published online on January 7, 2026. doi: 10.1038/s41586-025-09897-w
Recent MRI studies reveal that yawning is not simply a sign of fatigue or boredom; it reorganizes fluid flow in the brain, indicating that yawning is unique for each individual.
Yawning is observed in most vertebrates, yet its precise purpose remains largely unclear. Theories suggest that yawning enhances oxygen intake, regulates body temperature, boosts fluid circulation in the brain, and modulates cortisol hormone levels.
“Crocodilians yawn, and even dinosaurs likely did too. This behavior has evolutionary significance, but why does it persist today?” queries Adam Martinac from Neuroscience Research Australia, a non-profit medical organization.
To understand yawning’s mechanisms and its impact on the body, Martinac and his team involved 22 healthy participants, evenly divided by gender, in their study.
Participants underwent MRI scans while performing four distinct breathing actions: regular breathing, yawning, voluntarily suppressing yawns, and deep breathing.
The data analysis revealed surprising findings. The initial hypothesis was that yawning and deep breathing would similarly facilitate the movement of cerebrospinal fluid (CSF) out of the brain.
“However, yawning caused CSF to flow in the opposite direction compared to deep breathing,” states Martinac. “We were genuinely surprised by this outcome.”
Specifically, the study discovered a strong directional coupling between CSF and venous blood flow during yawning, both moving away from the brain toward the spine. This stands in contrast to deep breathing, where CSF and venous blood typically travel in opposing directions—CSF flows in while venous blood flows out.
The specific mechanisms governing CSF movement during yawning, including the volume expelled, remain unclear. Current estimates suggest a mere few milliliters of CSF are moved per yawn. Future research aims to quantify this further.
“It’s likely that neck, tongue, and throat muscles collaborate to facilitate this fluid movement,” he adds.
Another noteworthy finding is that yawning augmented carotid artery inflow by over one-third compared to deep breathing. This is presumably because yawning clears CSF and venous blood from the cranial cavity, allowing for increased arterial inflow.
Each participant exhibited a distinct “yawn signature,” showcasing variability even in tongue movements. “It seems that everyone has a unique pattern to their yawns,” says Martinac.
One intriguing area for future research is the physiological benefits arising from CSF movement during yawning.
Theories suggest that this could relate to thermoregulation, waste removal, or potentially other unexplored functions. “It is possible to live without yawning, but there are several subtle effects that likely assist in waste management, temperature control, and even the social dynamics of yawning,” he explains.
The contagious nature of yawning adds another layer of mystery and proved essential for this study, as video footage of yawns was shown to participants while they were inside the MRI scanner.
“In our lab meetings, I always have to speak last because my discussion of this research triggers yawning in everyone else,” Martinac shares.
Researchers like Andrew Gallup from Johns Hopkins University highlight the significant findings of the study, emphasizing its contributions to our understanding of yawning. He also noted that some of the findings have been understated, particularly those affirming yawning’s role in temperature regulation.
“The observed 34% increase in internal carotid artery flow during yawning is a critical finding that deserves more attention,” Gallup asserts.
He further noted that the study focused on contagious yawns versus spontaneous yawns, indicating that spontaneous yawns may induce even greater changes in CSF and blood flow.
“The video suggests contagious yawns are shorter than the average spontaneous yawn, which lasts about six seconds,” he notes.
Professor Yossi Rathner from the University of Melbourne agrees the team may have underestimated certain findings but opposes some claims concerning thermoregulation.
“Increased sleep pressure can elevate levels of a compound called adenosine that accumulates in the brain stem. Yawning seems to facilitate fluid movement in the brain stem, helping to flush out adenosine, temporarily alleviating sleep pressure and boosting alertness,” Rathner explains. “While this isn’t a direct conclusion from the study, the data strongly implies this relationship.”
Young Loggerhead Sea Turtle in the Caribbean Sea near the Bahamas
WaterFrame/Alamy
Recent research indicates that sea turtles may be more resilient to climate change than previously believed. Concerns have been raised that rising temperatures could lead to the extinction of these reptiles, as a majority of turtle eggs tend to develop into females. However, scientists have discovered a genetic safety net that maintains a more balanced sex ratio even as temperatures increase.
According to Chris Eizaguirre at Queen Mary University of London, “We believe we have uncovered the ability of turtles to adapt to the environment they find themselves in.”
The gender of baby sea turtles is temperature-dependent rather than determined by chromosomes. Laboratory studies show that cooler nest temperatures favor male hatchlings, while warmer conditions promote female hatchlings. This raises concerns that global warming could result in significantly more female turtles.
For instance, genetic research conducted in 2018 revealed that around 99% of young green sea turtles (Chelonia mydas) aged 4 to 20 years in a nesting area off Australia were female. This finding contributed to alarming predictions about male shortages which could lead to a population collapse.
However, due to the challenges of identifying a turtle’s gender before it reaches maturity, field data regarding hatchling sex ratios have been limited.
To address this gap, Eizaguirre and colleagues conducted both laboratory and field experiments focused on loggerhead sea turtles (Caretta caretta).
In one phase of the study, they collected 240 eggs from seven loggerhead nests along Florida’s Palm Beach County coast. These eggs were incubated at three different temperatures: 27°C (81°F) suitable for male hatchling production, 30°C (86°F) for an equal sex ratio, and 32°C (90°F) to promote female hatchlings.
After one to three days, blood samples were taken from the hatchlings, which were kept until mature enough for sex determination via keyhole surgery or laparoscopic imaging.
By comparing genetic data from the blood samples, researchers found distinctive activity patterns in hundreds of genes that indicated sex, attributable to an epigenetic process called DNA methylation. In females, 383 genes were hypermethylated, while males had 394 hypermethylated genes, many of which are known to play roles in sexual development.
Utilizing these findings, the team conducted field research on Sal Island, Cape Verde, collecting 29 newly laid loggerhead sea turtle eggs. The eggs were divided, with half buried in a cooler area and the other half in a warmer spot, and monitored for temperature variations.
Analysis of blood samples from 116 hatchlings revealed a higher number of males than predicted, suggesting previous models had overestimated female hatchling production by 50-60%, likely due to previously unrecognized biological adaptations.
“This discovery highlights that molecular mechanisms exist that help turtles adapt to climate change by modulating the sensitivity of sexual differentiation to temperature,” Eizaguirre explains.
“While feminization is a concern and does occur due to climate change, we are suggesting that if populations are robust and genetically diverse, species can adapt to their environmental conditions,” he adds.
These findings are supported by recent evidence from Graham Hayes at Deakin University, which showed that more male sea turtles are hatching than originally expected if temperature were the sole factor in sex determination. Hayes notes that turtles can adapt their crucial temperature-related sex ratios to local conditions.
In addition, turtles employ other strategies to mitigate the impacts of climate change, such as nesting earlier in the season and adjusting their migration patterns to breeding grounds to counteract feminization effects. “While females may not breed annually, males migrate to breeding grounds more frequently, contributing to a more balanced reproductive sex ratio,” Hayes explains.
Despite these behavioral adaptations, Eizaguirre warns that hatchlings still face threats from excessive heat, which can lead to lasting changes in DNA methylation—an indication of molecular adaptation that is promising for these vulnerable reptiles.
Illustration of Haikouichthys, a notable Cambrian fish with fossilized evidence of a second pair of eyes
Xiangtong Lei, Sihang Zhang
Over 500 million years ago, the earliest known vertebrates exhibited an intriguing feature: an extra eye. Interestingly, humans may retain traces of this ancient evolutionary trait.
Significant fossils from two species of jawless fish, known as myllokunmingids, were discovered by Kong Peiyun. From 2019 to 2024, Kong worked alongside colleagues at Yunnan University in China, specifically around Dianchi Lake.
The fossils unearthed in the Chengjiang biota area, renowned for its exquisite preservation, date back to approximately 518 million years ago—a timeframe marked by a dramatic increase in life’s diversity during the Cambrian period.
Remarkably, the vertebrate fossils discovered by Kong’s team included well-preserved soft tissue and vital eye structures.
Complex eye structures evolved independently in various animal groups. Many invertebrates, like insects, possess compound eyes, which consist of numerous individual units, each with its own lens, enabling a mosaic vision.
Meanwhile, vertebrates such as humans and reptiles possess what scientists label as “camera eyes.” These comprise a spherical lens, retina, iris, and muscles that regulate eye movement. Additionally, they contain pigment structures called melanosomes that influence eye color.
Light focuses on the retina, generating a signal relayed to the brain via the optic nerve.
Under electron microscopy scrutiny, Kong and his team identified two eyes situated on the sides of the head, with melanin-rich melanosomes preserved, alongside two smaller enigmatic black marks between them.
Employing a lens impression to analyze the fossils, team members led by Jacob Vinther from the University of Bristol suggested that these ancient creatures possessed two pairs of camera-like eyes, allowing them to visualize their environment much like modern vertebrates. The decisive difference? They utilized four eyes instead of two.
Fossil of Haikouichthys displaying conserved melanosomes
Xiangtong Lei, Sihang Zhang
The research team posits that this ancient additional eye has evolved into various organs known as the pineal complex. Some vertebrates, such as reptiles, possess a light-sensitive organ called the parietal eye atop their heads, while all mammals retain a reduced version that is the pineal gland, a key player in regulating sleep cycles through melatonin secretion.
“Early vertebrates likely used the pineal organs as functional eyes, enabling them to perceive their surroundings before evolving into sleep-regulating organs,” states Vinther.
These large eyes may have been optimized for high-resolution vision, complemented by smaller eyes that enabled detection of nearby threats—critical for survival in the predator-rich Cambrian seas.
According to Vinther, these creatures could likely discern objects with detail, estimating their shape and gain a degree of depth perception—all thanks to their remarkable four-eyed adaptation.
Tetsuto Miyashita, from the Canadian Museum of Nature in Ottawa, finds the interpretation of these fossils both “half-believable and half-doubtful.”
The structure located between the two eyes had previously perplexed researchers, but realizing it may indicate another camera eye was considered a “lightbulb” moment, he explains.
If indeed this is the case, it raises the question: where is the animal’s nose? “Most early fish evolution centered around nose development, suggesting that it would be unusual for the nose to not be preserved,” he notes.
Miyashita anticipates significant discussions will persist until experts can engage in a thorough debate regarding this exciting finding. “What function do so many prominent eyes actually serve?” he questions.
John Patterson, a researcher from the University of New England in Armidale, Australia, asserts that it is logical for prey species to have developed such visual capabilities to escape formidable predators.
The Cambrian era was evolutionary peculiar, showcasing animals displaying unusual behavior and not strictly developing pairs of eyes on their heads, but placing eyes in other regions as well.
Karma Nangle, a professor at the University of California, Riverside, aims to create a comprehensive map of the entire fossil body to investigate the potential existence of similar traces. Such findings could demonstrate that the second set of eyes may simply be a result of chemical processes during fossilization.
Dinosaur Hunting in Mongolia’s Gobi Desert
Embark on an exhilarating expedition to discover dinosaur remains in the remote wilderness of the Gobi Desert, renowned as a leading paleontology hotspot.
Ralph Fiennes’ Role in “28 Years Later: The Bone Temple”
Sony Pictures
It’s hard to overstate the impact of 28 Days Later. This groundbreaking 2002 film features Jim the Courier (Cillian Murphy), who awakens from a coma to find Britain devastated by an “angry virus,” a precursor to the past two decades of zombie media. The film serves as a stark reflection of societal decay and chaos.
A new trilogy could have easily followed the original formula, but in 2025, 28 Years Later shatters that mold. Set decades after the initial outbreak, this film revitalizes the series by focusing on Spike (Alfie Williams), a young boy navigating life on a virus-free island amid the ruins of Britain. His journey introduces new species of the infected and intelligent ‘alphas’ like Samson (Chee-Lewis Parry), who exhibit strategic thinking.
The second installment, Bone Temple, written by Alex Garland and directed by Nia DaCosta, shifts its focus to “the Jimmys,” a gang of youth captivated by bloodsports rather than the infected. These characters are stripped of their identities, led by the enigmatic Sir Lord Jimmy Crystal (Jack O’Connell), who dubs them all “Fingers.”
As the story unfolds, the Jimmy family’s troubling regression poses a menace to Spike as well. The harrowing first scene of Bone Temple sees Spike fighting for survival against Jimmy, marking a pivotal moment where an uninfected individual is killed, initially highlighting a crucial distinction.
This film challenges our understanding of the infected. We meet Ian Kelson (Ralph Fiennes), a retired physician and Spike’s ally, who attempts to understand these new beings. He once used morphine to subdue Samson but finds the alpha craves the drug, establishing a reluctant bond between them.
Through shared experiences, Kelson—an anthropologist at heart—investigates the cultural remnants of humanity by creating monuments and reclaiming narratives from desolate towns. His quest prompts profound questions about the consciousness of the infected. “What if you could speak?” he muses. “Do you have memories? Are you evolving?”
As Bone Temple invites us to reconsider the nature of evolution, we ponder whether beings like Samson symbolize a new paradigm. Are they regaining their humanity or transitioning into something uniquely different? As the story progresses, we ask if a cure is possible for these once-infected beings, and whether the lines between human and infected remain clear after decades.
Kelson’s psychological exploration yields unexpected revelations. Upon encountering Jimmy and his gang, he discovers a potential path to healing for the remnants of humanity—infected or otherwise. The profound message of this riveting film is that our understanding of the infected must evolve. As we follow Spike’s journey through this dystopian world, it begs the question: could the infected become humanity’s saviors? With the trilogy’s finale on the horizon, anticipation builds for what lies ahead.
Longevity advocates, such as Brian Johnson, often push boundaries in their pursuit of immortality. For those of us looking to celebrate a century with less complexity, dietary changes are typically the first step. While plant-based diets are frequently recommended, recent studies in China indicate many centenarians include meat in their diets, potentially offering crucial benefits, especially for those with low body weight.
Meat is a source of essential amino acids that influence a signaling molecule named mTOR, linked to the aging process. Although numerous studies recommend reducing meat intake for longevity and disease prevention, it’s important to note that vegetarian diets have been associated with increased fractures and instances of malnutrition.
These challenges can be particularly pronounced for older adults with weaker bones, resulting in slower recovery post-surgery. According to Wang Kaiyue from Fudan University in Shanghai, understanding the link between diet and longevity is essential. Wang and colleagues analyzed data from a centralized health database focusing on individuals aged 65 and above.
Within their study, 5,203 participants aged 80 and older in 1998, who were free from cardiovascular conditions, diabetes, or cancer, were surveyed. Approximately 80% identified as meat eaters, while others followed a mainly plant-based diet but occasionally consumed animal products.
Interestingly, meat consumers demonstrated a higher probability of living to age 100 compared to those following vegetarian, pescatarian, or vegan diets. This finding held statistical significance when body weight factored into the analysis.
The likelihood of reaching 100 grew, especially among underweight meat eaters, with 30% reporting daily meat consumption, compared to 24% of underweight vegetarians in 1998. This trend was less pronounced among heavier individuals.
While heavy consumption of meat has been linked with obesity, research supports the role of animal proteins in building stronger muscles and enhancing bone health. According to Wang, such benefits are particularly significant for those lacking body mass.
Nonetheless, a diet rich in vegetables is crucial, with findings indicating participants who consumed vegetables daily tended to have extended lifespans.
“Older adults often face unique nutritional challenges,” says Wang. “Our research implies that dietary guidelines for older individuals should prioritize nutritional balance over strict avoidance of animal products, particularly for those with low body weight.”
This particular outcome may not hold true globally, as dietary habits differ significantly, but “the biological principles connecting nutrition and aging likely have universal relevance,” Wang adds.
According to James Webster from the University of Oxford, while this discovery is noteworthy, it should not drastically alter dietary practices. His team’s previous study highlighted a potential link between vegetarianism and the risk of femoral neck fractures, suggesting potential health issues with a strict vegetarian diet. However, Webster stresses that several studies illuminate the benefits of vegetarianism, especially concerning overall health.
Both vegetarian and meat-inclusive diets can be either healthy or detrimental, depending on nutritional content quality, Webster notes. “Identifying the nutrients essential for a balanced and healthful lifestyle is key,” he says, recommending a rich intake of whole grains, fruits, and vegetables while limiting salt, sugar, and saturated fats.
“Ultimately, more research is needed to determine the optimal diets for longevity, but a comprehensive view of dietary patterns is imperative,” concludes Webster.
If you’re considering running a marathon or starting an intense exercise program this January, why not opt for a simpler goal to enhance your well-being in 2026?
Setting an objective to calm your mind may not sound ambitious, but it offers significant health benefits. A growing body of research highlights the negative impact of stress on overall health, particularly on heart health. Techniques to achieve a calm state can elevate self-reported happiness, enhance emotional regulation, and improve sleep quality research suggests.
This calmness counteracts “allostatic load,” a term used by Sula Windgassen, a health psychologist and author of the upcoming book Everything is Inside Your Body. Chronic stress contributes to wear and tear on the body, overburdening key regulatory systems like metabolic, neuroendocrine, cardiovascular, and immune functions, which can eventually lead to disease.
When discussing stress relief, you’ve likely come across traditional advice such as exercise and deep breathing techniques. While these methods are scientifically validated, there’s emerging evidence pointing to additional calming strategies beyond a digital detox or time spent in nature.
Develop a Sense of Control
Research shows that enhancing your perception of control over stressors can aid in managing them. For example, in a study, participants who completed daily questionnaires about their stressors reported that feeling in control correlated with resolving stress more effectively.
“It’s not that the stressor goes away; rather, individuals feel empowered to address it, letting it go or resolving it,” says David M. Almeida from Pennsylvania State University, a key researcher in the study.
Achieving this sense of control involves small, manageable changes. “Feeling in control doesn’t imply you have everything figured out; it means being aware of factors you can influence during stressful situations.” This might look like deciding your response, determining when to engage, or finding a resolution path.
Interestingly, your age may influence how easily you feel in control. “Longitudinal studies indicate that while older adults may feel less control over work demands and family matters, they often maintain a strong sense of control in interpersonal conflicts,” Almeida explains. “This allows individuals to focus on what truly matters.”
Practice Self-Compassion
Research increasingly supports the idea that self-kindness can mitigate stress’s adverse effects on mental health, as indicated in a 2024 study. This research assessed self-compassion levels and participants rated statements such as, “I strive to understand and be patient with parts of my personality I dislike.” Researchers later investigated how these feelings affected coping mechanisms.
Data revealed that increased self-compassion fostered healthier coping strategies, enhancing psychological well-being while reducing anxiety, depression, and stress during a six-week study period.
Using Various Self-Care Techniques for Inner Calm
Drew Angerer/Getty Images
These findings support earlier research, which suggests that self-compassion can buffer against the harsh realities of stress. Psychologist Kristin Neff, a pioneer in self-compassion research, emphasizes three components: self-kindness, recognizing our shared humanity, and mindfulness, which allows us to separate ourselves from painful emotions.
Self-compassion works by reducing self-criticism and rumination, according to William Van Gordon, a Chartered Psychologist and Associate Professor of Contemplative Psychology at the University of Derby. However, he advises moderation to avoid self-obsession, which can lead to heightened stress levels.
A balanced approach includes practicing compassion for both yourself and others. Van Gordon recommends active listening when someone shares their struggles with you, making eye contact, putting away your phone, and fully engaging with them (“That sounds really challenging, I’m sorry to hear that.”). Additionally, loving-kindness meditation can be beneficial; spend 10-15 minutes daily sending well wishes to others using phrases like “May you be happy” and “May you be peaceful.”
Revamp Your Self-Care Practices
Self-care strategies play a significant role in stress management, as extensively documented in the literature. Recent studies indicate that integrating diverse self-care methods into your routine yields the best results. For instance, a study published in August explored how individuals coped with stresses during the coronavirus pandemic, analyzing participants’ journaling about their anxiety levels and the coping techniques employed.
I’ve discovered that a blend of strategies such as journaling, exercise, social interaction, and cognitive reframing—like focusing on the positive aspects of not receiving a promotion—has proven most effective.
“Different combinations of tools worked for different individuals on different days,” explains Ethan Cross, an experimental psychologist from the University of Michigan involved in the research. “Those adept at managing emotions benefited from having a wide array of emotional regulation strategies.”
There’s no denying that protein has become a major industry nowadays. A glance at the aisles of your neighborhood grocery store reveals numerous products highlighting their protein content, whether they originate from natural sources like meat and dairy or from processed items such as breakfast cereals and pasta.
Additionally, protein powders are available for those wishing to enhance their protein intake or source protein from non-animal origins, including fitness enthusiasts and vegans.
However, a concerning new report discloses that some of these powders contain another substance alongside protein: lead. Given this revelation, how concerned should you be about protein powder?
Lead Levels
Consumer Reports, an independent nonprofit organization in the United States that assesses the quality of consumer products, evaluated 23 different protein powder and shake formulations.
Their findings, revealed in October, were alarming. More than two-thirds of the products contained lead levels per serving that exceeded what Consumer Reports’ food safety experts deem safe for daily consumption.
Worryingly, certain products contained amounts that were 10 times the Dietary Intake Restrictions outlined by Consumer Reports.
At first glance, the levels of lead found in items meant for human consumption might appear dangerously high. However, it’s important to remember that Consumer Reports sets a relatively low daily dietary limit of 0.5 micrograms (μg) per day, whereas the U.S. Food and Drug Administration (FDA) has a limit of 12.5 μg per day.
Protein powders are made from proteins sourced from animals like casein and whey derived from milk, or from plant sources like soy, pea, and hemp. Source: Getty
Why is there such a significant difference between these recommendations? “My assumption is that Consumer Reports employs much lower benchmark levels than the FDA to address regulatory gaps,” says Dr. Kathryn Schilling, Assistant Professor of Environmental Health Sciences at Columbia University, USA.
This regulatory gap exists because supplements like protein powders do not fall under the categories of food or drugs in the United States. They are classified as dietary supplements and regulated by different FDA guidelines under the Dietary Supplement Health and Education Act of 1994 (DSHEA).
“There are no federal restrictions on heavy metals in supplements in the United States, and manufacturers aren’t required to demonstrate their products’ safety prior to market entry,” Schilling points out. “Given that research shows there is no safe threshold for lead, Consumer Reports may have established its own targets purely for health protection.”
In the UK and Europe, however, protein powders are considered food rather than dietary supplements, which mandates adherence to standard food safety regulations, including regular contaminant testing. But does this guarantee that UK protein powders are free of lead?
“No,” Schilling asserts. “Even with stricter supervision, trace levels can still emerge.”
The Danger
As Schilling emphasizes, no level of lead is safe. This is echoed by both the World Health Organization (WHO) and environmental health research in which Schilling was involved.
Toxic heavy metal exposure can have severe consequences on vital organs, including the brain, heart, liver, and kidneys; the documented harm is well-established.
For instance, a significant study by a major U.S. company published in The Lancet Public Health tracked blood lead levels in 14,000 adults over a 20-year period. Researchers discovered that individuals with elevated blood lead levels were 37% more likely to die from any cause and 70% more likely to succumb to heart disease compared to those with lower lead levels.
The body retains lead in the calcified tissues of bones and teeth, where it can build up and remain for decades. Source: Getty
Similarly, the WHO estimated in 2019 that excessive lead exposure led to over 300,000 deaths from strokes worldwide. Lead can harm blood vessel linings, resulting in inflammation, plaque accumulation, and high blood pressure. This is why the American Heart Association lists lead as a risk factor for cardiovascular diseases.
One of lead’s most insidious characteristics, apart from the damage it inflicts, is its tendency to persist in the body over extended periods.
“When lead enters the body, it accumulates in bones, teeth, and other tissues,” Schilling explains. “It can remain trapped in the skeleton for 10 to 30 years, gradually re-entering the bloodstream.”
Unfortunately, this coincides with the fact that even minimal lead consumption can result in bodily harm. Even microgram amounts of lead ingested daily are associated with increased risks of heart disease, kidney issues, and high blood pressure.
As noted earlier, the body eliminates lead at a sluggish pace. Therefore, consistent small amounts can accumulate more rapidly than they can be reduced.
Metal Detection
Consumer Reports’ analysis also revealed that the two protein powders containing the highest lead concentrations (up to 6.3 μg and 7.7 μg per serving) were plant-based products.
“There’s a scientific explanation for why some plant-based protein powders exhibited elevated metal levels,” Schilling states.
“Plants like peas, soybeans, and hemp have a tendency to absorb metals from the soil. If lead is present in even small amounts in the soil or irrigation water, the plants will take it up during growth.
“When these plants undergo processing, the metals from the original plants become concentrated in the final protein powder. Thus, the findings by Consumer Reports are plausible. However, their study examined only 23 products, leaving us unaware of the cultivation locations or manufacturing processes of the powders.”
Soy is a vital ingredient in many vegan and vegetarian supplements due to its high protein content. Source: Getty
“Lead is persistent in soil, dust, and outdated infrastructure,” Schilling notes. “It can still intrude into our homes, water supplies, and food; its prevalence in the environment makes it nearly impossible to eliminate all exposure.”
In fact, a 2019 FDA study estimated that the average American adult is exposed to as much as 5.3 micrograms of lead daily through dietary sources alone. If you inadvertently include a scoop of high-lead protein powder in this total, you could easily surpass FDA limits without even being aware of it.
Even more troubling, Schilling warns that high lead levels in protein powders have long been recognized in the U.S. “We’ve encountered reports like this repeatedly, and little has changed,” she states. “It’s not merely an issue with a single brand or batch; it represents a systemic contamination and oversight problem.”
So, given all this information, how concerned should you be about lead in your protein shakes and powders?
“Protein powder is just one aspect of the bigger picture,” Schilling concludes. “The essential message is not to panic after just one shake, but to acknowledge that even small amounts of lead from various sources can accumulate, highlighting the necessity for enhanced monitoring to remove lead from the products people regularly use.”
WThe ash processor has allowed women to engage in exhausting jobs that drain their leisure time. While social media sparked one revolution, it also led to the destabilization of democracies worldwide. Now, with the rise of AI, it appears that screenwriters might be among its primary targets for replacement. It’s easy to succumb to techno-pessimism; however, the new documentary *Seeing into the Future* (Sunday, 23 November, 8 PM, BBC Two) offers a fresh perspective. For individuals with disabilities, tech advancements are already making a significant impact, and this is just the beginning.
Hosted by comedian and *Strictly* champion Chris McCausland, who is visually impaired, the show features surprisingly captivating moments early on, such as how he utilizes his smartphone. Essentially, it serves as his eyes and voice. “What T-shirt is this?” he inquired while holding up the item. “Gray T-shirt with Deftones graphic logo,” his phone declared. It even informs him if his shirt requires ironing. However, McCausland was more curious about the origins of this technology and traveled to the U.S. to explore developments in the homes of tech leaders.
He visited Meta’s facility to test smart glasses. Personally, it felt as if he were either in a lair of a fictional villain or wandering around a castle for treats. This perspective reflects my lack of immediate necessity for such tech, as documentaries aim to unveil possibilities rather than highlight deficiencies. I imagine Mr. Zuckerberg isn’t lurking in a lab with pets or spinning in an egg chair.
I enjoy broadening my viewpoint. Although a button-less glass screen appears to be an exclusive gadget, McCausland acknowledges that his smartphone has turned into the most accessible device he has ever encountered. He expresses excitement about a device he whimsically refers to as Metaspec. This device is always active, offering live video descriptions and identifying what he’s viewing. It functions like a phone but is more like a wearable gadget. “A blind person will never have both hands free,” he remarks.
McCausland and Meta’s Vice President of Accessibility and Engagement Maxine Williams test out smart glasses.
Photo: BBC/Open Mic Productions
At MIT, he learned about nanotechnologies that may enable molecular devices to repair bodily cells. He experimented with a bionic walking aid that attaches to the calf to provide the wearer with additional strength, similar to the knee brace Bruce Wayne wore in *The Dark Knight Rises*. The most significant moment for him was traveling in a self-driving car, marking his first experience of riding alone in a vehicle.
Autonomous vehicles are anticipated to debut in the UK next spring (which feels like a long wait). My instinct is to label them as NOPE. Nevertheless, McCausland noted, “it’s not terribly different from trusting an unfamiliar driver.” These extraordinary cars come equipped with rotating radars that compute data, including the speed of light, to create a 3D model of their surroundings instantly. They might even feature gullwing doors. McCausland appreciated the self-operating handle, which adds a touch of intrigue. Coolness is likely the second best drive an engineer can pursue, the first being ensuring equal access to dignity and independent living. I must clarify that my skepticism doesn’t stem from just a general mistrust of technology; it leads to a mistrust of profit-driven big tech companies in considering public welfare or accountability.
The documentary also offers similar moments of delight, showcasing cultural disparities across the Atlantic. The participants are not merely Americans but the innovative minds of San Francisco. Unintentional comedy is enhanced by McCausland’s dry wit; even while discussing a blood-based computer with a nanotechnologist that could potentially restore eyesight, he seems more inclined to grab a pint at the pub than delve into futuristic devices.
The technology portrayed is distinctly American. “Can you hear the plane?” McCausland urged Zuckerberg to test out the glasses. “Yes, I can see the plane in the clear blue sky,” a serious, bespectacled participant replied. McCausland then exchanged a wry look with his camera crew, quipping, “Do they appear to know what they’re doing?” Judging by their gear, it seems they are indeed professionals. While gadgets become more capable of divine-like capabilities, a layer of skepticism remains, even when wearing Batman’s leg braces.
The Kuiper Belt, the outer disk of icy rock in our solar system, has been found to exhibit more intricate structure than previously understood. In 2011, researchers unveiled a cluster of objects with similar orbits, referred to as the Kuiper Belt’s “kernel.” Recently, another group has identified an even more tightly groupedset of objects, termed the “inner kernel.”
The original kernel was identified through visual analysis of the orbits of 189 Kuiper Belt Objects (KBOs). This cluster is positioned roughly 44 astronomical units from the Sun, with one astronomical unit representing the distance between the Sun and Earth. Since the kernel’s discovery, no additional structures in the Kuiper Belt have been found.
That is, until Amir Shirazi and his team at Princeton University undertook the meticulous effort of refining orbital data from 1,650 KBOs. They utilized clustering and structure-searching algorithms to analyze this data. By training the algorithm to identify kernels, they discovered that whenever the algorithm pinpointed a kernel, it also uncovered another grouping, as noted by Siraj.
The newly identified star cluster has been dubbed the Inner Kernel, located at approximately 43 astronomical units from the Sun. Objects within this cluster exhibit highly circular orbits that align almost perfectly with the solar system’s disk.
“Such orbital stability indicates ancient, undisturbed structures. These formations can unravel mysteries regarding the solar system’s evolution, the movement of giant planets, and the environments it encountered during its early history,” Siraj explained.
Understanding how Neptune migrated from the inner solar system, where it is believed to have originated, to its present position could be particularly revealing, according to David Nesvorny, one of the original discoverers of the kernel at the Southwest Research Institute in Colorado. Nesvorny suggests that as Neptune migrates outward, the kernels, along with the KBOs forming the Inner Kernel, may have been temporarily stabilized through gravitational interactions with the giant planet, creating the aggregation seen today, before being released as Neptune continues its trajectory.
Chile’s Vera C. Rubin Observatory, which commenced operations this year, is anticipated to unveil even more KBOs, enhancing our understanding of both the core and the inner core, and potentially revealing undiscovered structures at the solar system’s periphery. “The deeper we delve into the structure of the Kuiper Belt, the more we uncover about the solar system’s history,” Siraj stated.
Ultra-processed foods (UPFs) have been labeled as “poison,” “addictive,” and “junk,” sparking justified concerns due to their links with various health issues, including obesity, type 2 diabetes, anxiety, and depression.
Their rapid rise has transformed the food landscape so drastically that what we consume today would be unrecognizable to even recent generations. From an evolutionary perspective, our bodies certainly aren’t equipped to handle them.
It’s no surprise that UPFs are a primary focus in efforts to tackle diet-related chronic diseases in the UK and US. However, we believe that the prevailing panic surrounding UPFs needs to be replaced with more thoughtful discussions. Not all ultra-processed items, like flavored yogurt or whole grain bread, deserve the same cautionary approach as sweets or sugary cereals. Being ultra-processed doesn’t inherently equate to being unhealthy; our perspective should be informed by previous scientific research.
As people consume more UPFs, their intake of saturated fat, sodium, and sugar tends to rise, while their intake of fiber, protein, and vital micronutrients declines. This trend runs counter to a healthy diet. Kevin’s recent research indicates that UPFs are often overeaten when they are energy-dense (more calories per bite) or particularly palatable (often combining nutrients such as sugars and fats that rarely coexist in nature).
On the other hand, Kevin’s research demonstrates that consuming UPF-rich meals that are energy-dense but less palatable can prevent weight gain. In fact, you could potentially lose weight even without intending to follow such a diet.
These insights hold significant implications, not only for individual choices but also for nutrition policies and regulations. Instead of broadly targeting all UPFs, efforts should concentrate on those that don’t meet healthy food standards. The U.S. Food and Drug Administration (FDA) is already heading in this direction, having recently introduced a definition of “healthy” food. This approach mirrors the UK’s nutritional profiling system, which emphasizes increasing the consumption of ingredients like fruits, vegetables, and whole grains while restricting sugar, sodium, and saturated fat. By honing in on UPFs with high-calorie or palatability-inducing combinations of nutrients, we can better tackle products that significantly contribute to obesity and related health concerns.
Addressing these specific foods requires implementing public health policies akin to those used in reducing tobacco usage, such as marketing limitations, compulsory labeling, and robust taxation. Furthermore, we must promote policies that improve the convenience, affordability, and accessibility of healthy foods, while also encouraging companies to reformulate UPFs to be healthier. For instance, envision a pizza made with a frozen whole-wheat crust topped with vegetables.
Some UPFs already align with FDA standards for healthy foods (such as whole grain bread and yogurt), and these items are today free from such regulations. Many people rely on UPF pasta sauces, hummus, frozen meals, canned beans, and bread, which can easily fit into a healthy diet. Therefore, it is crucial to pinpoint which UPFs pose the greatest risk.
While UPFs are not going away anytime soon, their narrative is still evolving. Let’s move past the fear and toward informed coexistence by recognizing how certain UPFs can be detrimental and taking appropriate action.
You may have come across the idea that high vitamin C intake can ward off colds, or perhaps TikTok nudged you to try turmeric or other supplements for immune support. The truth is, many of these strong claims and quick fixes are unfounded. There exists a myriad of myths surrounding immunity. Daniel Davis, an immunologist at Imperial College London, addresses these in his new book.
In Self-Defense: A Guide to Busting Myths About Immune Health, Davis aims to debunk these erroneous beliefs. He illustrates how advancements in technology, such as super-resolution microscopy, uncover the astonishing complexity of the immune system, illustrating how immune cells engage with their targets.
However, instead of feeling overwhelmed, he asserts that New Scientist shows us that this complexity can be empowering. It heightens our understanding of the immune system’s role in mental well-being, alerts us to lifestyle factors that might diminish immunity, and enhances our ability to distinguish between factual information and fads.
Helen Thomson: Let’s dive into the notion of “immune health” and the claims that it can be enhanced. That seems like a misleading concept, doesn’t it?
Daniel Davis: Absolutely. Many products claim they can “boost” immunity, but that’s a misleading notion. The immune system is not about simply enhancing your body’s infection-fighting capacity. Aggressive increases can inadvertently attack healthy cells, leading to autoimmune issues and allergies. A measured response is crucial.
So are we aiming to make our immune systems “smarter”?
Conventional discussions about immune health often lack subtlety. Each person’s immune system is wholly unique, shaped by genetics. Thus, when discussing immune health, we can only refer to what has been generally found to be effective:while general improvements may aid people, predicting individual outcomes is challenging.
Recent findings indicate that the immune system doesn’t operate in isolation; it’s influenced by diet, exercise, and the microbiome. Can we pinpoint which lifestyle factors significantly affect immune health?
The most substantial known influence on immune health is chronic stress. Regarding the other factors you mentioned, evidence exists, but causation is hard to prove. However, with stress, emerging molecular insights offer clarity on what occurs.
Which one in particular?
When the body detects a threat, it triggers a fight-or-flight response. The hypothalamus sends signals to the pituitary gland and adrenal glands, releasing cortisol and adrenaline. This prepares the body for action but quiets the immune response. For instance, short-term stress from parachuting only temporarily alters immune cell counts post-landing. However, sustained stress keeps cortisol levels elevated, which over time can undermine immunity, creating long-term challenges.
Orange juice is not the immune booster many believe
Marco Lissoni/Alamy
Our confidence in these findings stems from laboratory observations where elevated cortisol levels reduce the capacity of immune cells to eliminate virus-infected or cancerous cells. Coupled with observed correlations, such as individuals under long-term stress being less responsive to vaccines or more prone to infections, it’s evident that prolonged stress adversely impacts the immune system.
If you’re under stress and have adjusted your lifestyle, can your immunity be measured to see if these changes are effective?
It’s challenging to prove that lifestyle changes significantly mitigate long-term stress. While it’s a plausible assumption, demonstrating it empirically is difficult. Hospitals may track white blood cell counts as indicators of immune health, but given the vast range of immune cell types, simplifying measurements is a complex endeavor.
Experts, including well-known scientists, frequently claim that specific actions can bolster immunity. Should we take their word for it?
Consider orange juice as a prime example. During my upbringing, I believed that it was a cold remedy. However, that belief is misleading. This misconception stems from Linus Pauling, a two-time Nobel laureate famous for his work. In 1970, he published a bestseller entitled: Vitamin C and Colds, which inadvertently fueled a vitamin C craze based on selective data and anecdotal evidence, amplified by the media.
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The most clearly proven effect on our immune health is long-term stress. “
Interestingly, high doses of vitamin C do not determine whether you’ll catch a cold. While research shows that such supplementation can shorten the duration of colds by approximately 8%, this finding is tricky to interpret. Those taking high vitamin C might engage in other positive health behaviors that truly account for the shorter duration. Yet, this myth persists, rooted in the influential narratives of key scientists.
This history reminds us to remain cautious about individual anecdotes of success or insight. We need credible experts, but we should maintain a healthy skepticism towards singular opinions. Therefore, relying on established scientific consensus should guide us.
Lately, interest has surged surrounding the links between our immune systems, inflammation, and mental health. It’s a captivating area of research.
The relationship between the immune system and mental health is indeed a thrilling frontier. Initially, a group of individuals taking anti-inflammatory drugs for rheumatoid arthritis reported enhanced mental well-being prior to their physical improvements. These medications inhibit cytokine action, proteins produced by immune cells to facilitate communication.
Moreover, research indicates that individuals with certain mental health conditions exhibit elevated inflammatory markers in their blood. For instance, a study of nine-year-olds revealed that higher IL-6 cytokine levels predicted greater depression rates by age 18.
Animal studies present robust evidence as well. When injected with IL-6, animals demonstrated less exploratory behavior, paralleling signs of mental distress.
Yet, actionable strategies stemming from these insights remain elusive. Standard anti-inflammatory medications like aspirin or ibuprofen aren’t effective in treating depression, as several small trials have indicated. The question of whether anti-cytokine treatments can aid those with mental health issues remains unanswered, with current trials yielding inconclusive results.
Gut microbiome is important for a healthy immune system
Simone Alexowski/Science Photo Library
Future research should focus on identifying individuals who may benefit from interventions: Could individuals with particular mental health disorders who exhibit elevated cytokine levels and possibly other yet-undiscovered symptoms find relief through anti-cytokine therapies? While it’s a thought-provoking hypothesis, the journey to actionable solutions is ongoing. Understanding that your mental health may be linked to immune function can itself be empowering, marking a significant area of exploration.
People frequently ask how they can enhance their immunity. What do you tell them?
I have some insights, but they aren’t straightforward. Long-term stress is a concern. Getting adequate sleep is vital. However, individual needs can vary significantly. While I understand the importance of the microbiome, I can’t provide specific advice guaranteed to enhance it. These answers may disappoint, but embracing the complexity of the immune system is crucial. The lessons inherent in studying its intricacies are profound.
The Antarctic Aitken Basin (the predominantly blue region in the center of this topographic representation) is an impact feature roughly 2500 kilometers in diameter, covered by smaller craters.
NASA/GSFC/MIT
An in-depth investigation of its morphology reveals that the moon’s oldest and largest crater formed differently than previously believed, altering our understanding of lunar history.
The South Pole-Aitken (SPA) basin emerged around 4.3 billion years ago, occurring hundreds of millions of years after the moon’s initial formation. Scientists theorize it was created when a colossal asteroid grazed the moon’s surface, producing a crater thousands of kilometers wide and 12 kilometers deep.
This crater, located on the moon’s far side, displays a substantial accumulation of ancient debris near its northern edge. This debris pattern aligns with what would be expected if an asteroid struck the Earth from a southerly trajectory, below the South Pole.
However, new findings indicate a different scenario. Jeffrey Andrews-Hanna from The University of Arizona and his team discovered that the crater narrows towards the south. Andrews-Hanna noted that this teardrop shape implies the asteroid originated from the north, with the cataclysmic impact occurring from the opposite direction.
Mapping the basin’s shape is challenging due to the erosion of its ancient boundaries from later impacts. “We traced the contours of the Antarctic Aitken Basin using every conceivable method,” states Andrews-Hanna. “Models of topography, gravity, and crustal thickness were employed. We explored various approaches for tracing the basin, but with every method, it consistently tapered to the south.”
The researchers then contrasted its shape to well-studied craters on other celestial bodies, such as Mars’ Hellas and Utopia Craters. This comparison has provided clearer geological evidence on how these craters formed, leading them to conclude that the SPA basin’s shape likely resulted from an asteroid impacting from the north.
This new understanding will significantly affect how the moon’s internal material is distributed, aiding scientists in comprehending the moon’s cooling process from a massive ocean of magma during its formative years. It also suggests that some rocks around the SPA basin’s perimeter originate from the moon’s deep interior, which remains otherwise inaccessible.
This insight will enhance NASA’s forthcoming Artemis III mission, which aims to deploy astronauts to the SPA basin’s edge in search of potential water ice, as highlighted by Mahesh Anand from the Open University, UK. “This will provide opportunities to learn more about the moon’s interior, despite the lack of available samples,” he adds. “It’s a significant advantage.”
Ultimately, however, the true nature of the crater’s formation will only be clarified when samples from the SPA basin are returned to Earth, according to Anand.
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The NASA DART probe, depicted on the upper right, is on a trajectory to collide with the asteroid Dimorphos, shown on the left.
Steve Gribben/Johns Hopkins APL/NASA/AP/ALAMY
Following the collision of NASA’s spacecraft with an asteroid, its orbit is expected to change gradually next month, leaving astronomers puzzled.
In 2022, the Double Asteroid Redirect Test (DART) sent a nearly 600-kilometer spacecraft towards a small asteroid known as Dimorphos.
Prior to the collision, Dimorphos completed an orbit every 11 hours and 55 minutes. Observations soon indicated that the impact shortened this orbital period by approximately 30 minutes, although in the following weeks and months, the orbital period diminished by an additional 30 seconds.
Astronomers have proposed that this phenomenon might be due to the release of small debris during the impact, which could gradually cause energy loss and result in a reduced orbital path.
Recently, Harrison Agrusa and Camille Chattanette from the University of Côte d’Azur in Nice, France, asserted that debris ejection cannot solely explain the observations.
“The boulders can be flung by Dimorphos, leading to a wider dispersion. This momentum will eventually revert and be transferred back to Dimorphos,” Agrusa explains.
Agrusa theorizes that a more plausible reason for Dimorphos’ shifting trajectory is that its impact affects its rotation in a complex manner, causing rocks on its surface to shift. The friction generated by these rocks could lead to heat production from their collisions. The resultant energy loss as heat might clarify the decrease in the asteroid’s orbital path, although this study has not modeled that aspect.
“When you rearrange materials on a surface, you’re altering the gravitational potential energy of Dimorphos itself,” Agrusa states. “This adjustment could feasibly slow down the orbital period within a month, as this would be a prolonged process.”
This highlights the challenges in predicting how asteroid orbits will alter post-impact, yet according to Agrusa, this phenomenon is less concerning when deflecting an asteroid heading towards Earth. This is because binary asteroid systems like Didymos and Dimorphos are quite uncommon, making it unlikely that similar effects will occur for a solitary asteroid orbiting the Sun.
fA few years ago, just before the first Covid lockdown, I wrote an article exploring a rather niche query. Most gamers press down on the controller, gazing at the characters on their screens as they look up. However, controlling avatars like pilots represents a significant minority who handle their characters as if they were piloting, returning to control the plane and ascend. In many modern games, this necessitates diving into settings to adjust the default controls. Why has this practice persisted?
I figured some hardcore gamers might find this topic intriguing. To my surprise, the article resonated with over a million readers, drawing the attention of Dr. Jennifer Corbett (cited in the original piece) and Dr. Jap Munneke.
At that time, the two were investigating vision science and cognitive neuroscience, but the lockdown meant they could no longer conduct lab experiments with volunteers. The issue of controller inversion presented an ideal chance to analyze the neuroscience behind human-computer interactions using remote participants. They reached out to gamers who contributed insights into the motivations behind their controller preferences, garnering hundreds of responses.
Microsoft Flight Simulator… Many believed that being a pilot would affect control retention. Photo: Microsoft
Interestingly, it wasn’t just gamers who were engaged. “Machinists, equipment operators, pilots, designers, and surgeons — individuals from diverse fields reached out,” Corbett noted. “The variety of responses signaled a wealth of scientific literature to examine for structuring optimal research. The feedback from readers prompted us to refine how users customize their controllers.”
This month, the duo released their findings in a paper titled “Why Axis Inversion? Optimizing the Interaction Between Users, Interfaces and Visual Displays in a 3D Environment.” Why do some people choose to invert their controls? It’s a complex issue.
The study commenced with participants completing a survey detailing their background and gaming experiences. “Numerous individuals indicated that their preference for flipping controls stemmed from their early experiences with flight simulators or the first console games they played,” Corbett explained. “Many reported changing their preferences over time, prompting us to include an entirely new section in our research based on this input.”
Mental rotation… Subjects engaging in the controller inversion study. Photo: Jen Corbett
However, Corbett and Munneke, currently based at MIT, were convinced that critical cognitive aspects of inversion could only be assessed through behavioral reactions. They developed a sequence of four experiments, in which participants were monitored via Zoom. Corbett elaborated, “They had to mentally rotate random shapes, adopt the perspective of the ‘avatar’ in the scenario, judge the tilt of an object against a differing background, and navigate the typical ‘Simon effect’ when responding to targets while using a machine. These varied tasks clarified whether an individual tends to invert.”
The outcomes of the cognitive evaluations revealed that many assumptions surrounding controller preferences were indeed incorrect. “There was no discernible reason provided by participants [for inverting controls],” Corbett stated. “It was linked to their actual inversion habits. The quicker participants were, the less inclined they were to invert. Conversely, those who identified as occasional invertors were significantly slower in these tasks.” Does this imply that non-inverters excel at gaming?
In essence, gamers believe they are inverters or non-inverters based on their initial exposure to game controls. Many flight simulators from the 1980s may have conditioned players to instinctively turn themselves around. Conversely, gamers raised in the 2000s might assume they are inherently non-inverted, given that non-reverse controls became the norm. Yet cognitive testing suggests otherwise. Depending on how your brain perceives 3D objects, you may be predisposed to either invert or not.
Consequently, Corbett suggests that trying out a controller configuration you’re not accustomed to might enhance your gaming skills. “Non-inverters should experiment with inverting. Inverters should consider giving non-inversion a fair shot,” she suggests. “You might want to commit to it for a few hours. People have learned one way, but that doesn’t necessarily mean they can’t excel with the alternative. A parallel can be drawn with left-handed children who are compelled to write with their right hand, potentially leading to long-term handwriting difficulties and learning challenges.”
Through their research, Corbett and Munneke established that complex, often subconscious cognitive processes govern how individuals utilize controllers, affecting not just gaming hardware but also human-computer interfaces across various fields, from aviation to surgical technology. They crafted a framework for assessing how to optimally tailor controls for individuals, now detailed in their published research.
Learning curves… Corbett and Munneke’s research can also influence surgical practices. Photo: Oksana Krasiuk/Alamy
“This research has significant potential for optimizing inverted settings to enhance human-machine collaboration,” Corbett stated. “Many technologies blend human capabilities with AI and various machines to amplify performance. It allows individuals to tailor a specific configuration for tasks—whether aiming for a target or avoiding a mistake—such as in laparoscopic surgery.”
What began as a casual, almost nerdy inquiry has evolved into a published cognitive research document. One scientific publication has already referenced it, and interview requests have surged from podcasts and YouTube channels. What’s my takeaway? “The most remarkable discoveries for gamers [who don’t invert],” Corbett remarked:
Broken bones often need a material to fill the void
Sopone Nawoot/Alamy
Researchers have discovered that with slight modifications, hot glue guns, typically used in crafting, can effectively and affordably mend damaged bones.
While bones can often heal themselves after minor injuries, serious trauma or tumor removal may leave cavities that require a synthetic plug to stimulate bone cell growth.
Although 3D printing can create tailored scaffolding to fill these gaps, the method necessitates scanning and remote fabrication, taking at least a week. While this pre-planned approach works for worn joints, it’s unfeasible for emergency surgeries.
To tackle this issue, John Seung Lee from Sungkyunkwan University in Korea and his team have created a solution that can be employed immediately during a single procedure.
They modified hot glue guns to lower their operating temperature from above 100°C to approximately 60°C and developed biological adhesive materials composed of hydroxyapatite (which makes up 50% of natural bone) and a biodegradable thermoplastic known as polycaprolactone.
During surgery, surgeons can utilize hot glue guns to rapidly fill bone voids, enabling bone cells to access these gaps and ultimately heal the injuries permanently over time.
“It’s essentially created from a standard hot glue gun,” Lee explains. “It significantly reduces time and costs.”
Lee and his colleagues assessed the glue gun’s effectiveness by repairing a 1 cm gap in a rabbit’s femur. Twelve weeks later, samples showed no complications or signs of separation between the adhesive and the bone, with bone mass being more than double that of control animals treated with traditional cement.
Furthermore, researchers found that two antibacterial agents can be integrated into the filaments to decrease infection risk, releasing the drugs gradually to the surgical site over several weeks.
Benjamin Olivere from the University of Nottingham in the UK is investigating 3D-printed scaffolds for bone repair but expresses skepticism, suggesting hot glue guns might become a more practical alternative compared to slower scanning and printing methods.
“Is it an intriguing idea? Absolutely. Is it feasible? Yes. Do I believe it’s plausible? Yes,” he states. “However, the practical application may be a different matter.”
Water is crucial for life, which is why researchers prioritize finding water sources when exploring other planets. Mars is of particular interest to astrobiologists due to evidence of historical water presence. The current surface of Mars is cold and arid, prompting scientists to investigate what happened to that past water. Studies have indicated that Mars has an active water cycle that produces clouds of water ice, but the existence of water on its surface remains unclear.
Recently, an international team of researchers employed high-resolution imaging and spectral photoanalysis to look for frost on Mars’ volcanoes. They analyzed around 4,200 images obtained using a technology known as color and stereo surface imaging technology from Cassis. This technology utilizes satellite imagery of Mars from the European Space Agency’s Trace Gas Orbiter. The researchers explained that they identified frost by searching for the blue wavelengths in blackcurrant data, as frozen surfaces reflect more brightly at these blue wavelengths of spectral light.
Through their analyses, the team located 13 frost regions across four volcanoes, including Olympus Mons, Seranius Solas, Ascleus, and Arciamontes. They observed images taken over a 12-hour period and noted that high frost concentrations appeared early in the morning on the edges and craters of Olympus Mons. In one crater alone, frost covered an area of about 4,500 km or 3,000 miles, akin to the size of Philadelphia. The researchers estimated that these frost deposits were quite thin, measuring around 10 microns thick, which is roughly one-tenth the width of a human hair.
Next, the team sought to determine if the frost was composed of water or carbon dioxide. Given that Mars’ atmosphere is predominantly carbon dioxide, it is possible for carbon dioxide to freeze. Similar to Earth, Mars has ice in its polar regions; the Martian polar ice caps consist primarily of carbon dioxide, with minor amounts of water. Thus, they theorized that the volcanic frosts could also contain frozen carbon dioxide.
The research team utilized Mars weather research and prediction models to calculate the surface temperature of a volcano over a 24-hour period. They determined that the minimum temperature was -190°F or approximately -120°C, which is too warm for carbon dioxide frost to form, as it typically requires surface temperatures below -200°F or -130°C. However, they proposed that these volcanic frost deposits are likely made of water, as they were found at -140°F or -95°C in the Martian atmosphere.
The researchers highlighted that these Martian volcanoes are among the tallest highland volcanoes in the solar system and located within the equatorial region of Mars. It’s generally not expected that water ice would form in equatorial volcanoes since the slopes and sides tend to be too warm for frost condensation. However, their climate model indicated that the unique topography of these volcanic craters created local weather patterns conducive to frost formation.
Finally, the team carried out further observations and climate model simulations of Olympus and Arciamontes to ascertain whether this frost can form solely during the day or throughout the night. They found that frost accumulated in both volcanoes during the early mornings of winter and spring but not in summer, indicating a seasonal pattern that might reflect variations in Martian temperatures.
The researchers concluded that Mars’ volcanoes produce about 150,000 tonnes, or 150,000,000 kilograms, of water frost daily. They suggested that this frost formation is likely influenced by seasonal atmospheric phenomena such as wind patterns and pressure changes. Studying these processes could help scientists determine the potential for life on Mars; nevertheless, they noted that additional research is needed to rule out direct volcanic water sources.
Farmers apply lime to pastures to enhance soil quality
Wayne Hutchinson/Alamy
The centuries-old method of distributing crushed limestone on farmland can enhance crop yields by lowering soil acidity. While this practice is typically viewed as a contributor to greenhouse gas emissions, recent studies indicate that “liming” might actually assist in sequestering substantial amounts of carbon dioxide from the atmosphere.
“Liming can either act as a carbon source or as a carbon sink. Empirical evidence suggests it serves as a fairly effective carbon sink,” says Noah Pranabsky from Yale University. This revelation could motivate the global spread of limestone on farms, although liming does not produce this effect universally.
Each year, millions of tons of crushed limestone spread across fields are classified as emission sources. This classification arises because when alkaline materials dissolve in acidic soils, a significant portion of its carbon is released as CO2. However, this assessment is not entirely accurate. According to Tim Jesper Souhoff, also from Yale, the situation is more complex.
Today’s soils are highly acidic, resulting from extensive fertilizer use and pollution from fossil fuel combustion. Consequently, various other alkaline minerals in the soil dissolve and liberate carbon, even in the absence of limestone. “These CO2 emissions will happen regardless of whether lime is added or not,” Suhrhoff explains, emphasizing that this alteration of acidity can lead to unintentional consequences.
Suhrhoff advocates for a more accurate evaluation of emissions from this practice, suggesting that scientists should analyze CO2 emitted versus captured in scenarios both with and without liming.
As an illustration of this method, Suhrhoff, Planavsky, and their team focused on the Mississippi River basin, a region that gathers runoff from the majority of U.S. farmland. They calculated the net carbon impact of limestone applications from 1900 to 2015 across the area.
The researchers estimated emissions from the soil while utilizing geochemical models to assess how liming alters soil acidity. They also compared their model results with direct observations of alkalinity in the Mississippi, where limestone reacts with carbon dioxide.
By employing their innovative approach, the researchers determined that they had sequestered around 300 million tonnes of CO2 in the region, rather than enabling the release of hundreds of millions of tonnes of emissions. Souhoff presented these findings at the Goldschmidt Conference held in Prague, Czech Republic, on July 10th.
This practice can also be coupled with the increased use of crushed volcanic rocks on farmland to sequester even more CO2 from the atmosphere.
Wolfram Buss from the Australian National University suggests that while liming can act as a carbon sink, the success seen in the Mississippi River Basin may not apply universally. “There is a potential risk with lime application, which could result in net CO2 emissions in other systems, primarily due to the significant acidification of agricultural soils,” he warns.
The subsequent step is to determine where liming is most essential. “This presents the opportunity for us to foster improved crop yields, potentially leading to billions of tons of CO2 removal,” Planavsky remarks. Financial incentives can significantly aid low-income farmers who are unable to afford the optimal amount of lime needed for their crops.
“Isometric movements like planks can help alleviate pain.”
Sutulastock/Shutterstock
In my previous article, I discussed how isometric exercises, which involve holding muscles in a fixed position, can effectively lower blood pressure. Since then, I’ve started integrating them into my workouts. This leads me to ask: Do these exercises provide additional benefits?
The answer is yes—and some benefits were surprising. Isometric exercises, such as planks (as shown) and wall squats, can alleviate pain, prevent injuries, and significantly enhance fitness in an efficient manner. In fact, most individuals will likely gain from incorporating these into their workout regimes.
One of the most notable advantages of isometric exercises is their ability to build strength with minimal movement, making them less physically demanding compared to more dynamic workouts. They are indeed effective: a review revealed that isometric training over 42-100 days could boost muscle strength by as much as 92%.
These strength gains can be highly targeted. Athletes frequently employ isometric exercises to strengthen the challenging aspects of their movements, like the lowest point in a squat. This focused training may enhance overall performance, as researchers have discovered that isometric training could surpass jump-based training in terms of durability.
Moreover, these exercises are gentle on the body, making them easy to include at the beginning or end of a standard workout, providing extra benefits. They serve as excellent warm-ups and research has shown they can reduce muscle soreness post-exercise without hindering running performance. This contrasts with static stretching, which doesn’t alleviate muscle pain and can actually decrease performance.
Incorporating some isometric movements into your warm-up routine can also help in preventing injuries. Slow, controlled training that targets less active stages during workouts is commonly used to guard against hamstring injuries in soccer players; however, isometric exercise is found to be more effective, according to a study.
While the exact mechanism remains unclear, it appears that isometric exercises can activate the signaling pathways between nerves and muscles, enhancing muscle responsiveness during workouts. This could help in correcting muscle imbalances, which are often a source of injuries.
These advantages are not limited to athletes. A review published this year demonstrated that isometric training significantly reduces pain and strengthens muscles in individuals with osteoarthritis. Because they are low-impact, these exercises are perfect for beginners and those with limited mobility due to injuries.
Considering their myriad benefits, isometric exercises have become a consistent part of my training routine. Furthermore, because they require no equipment and minimal space, I can perform them almost anywhere at any time.
Grace Wade is a health reporter for New Scientist, based in the US.
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Recent studies have uncovered new insights regarding the timing and locations of cat domestication. Contrary to the belief that these early felines were simply pampered companions or helpful pest eliminators, it appears they may have primarily been bred for mass sacrificial purposes.
Historically, it was thought that the domestication of cats began over 9,000 years ago as Wildcats started to adapt to the first agricultural settlements.
As grain storage attracted rodents, North African Wildcats (Ferris Livica) began hunting these pests, fostering mutually beneficial relationships that ultimately led to domestication.
However, this model is now being rigorously examined. “North African wildcats, the wild ancestors of domestic cats, were believed to have been tamed during the Neolithic era,” states Dr. Shawn Doherty, an archaeological scientist at the University of Exeter and lead author of a study featured in BBC Science Focus.
“Our research challenges this narrative by reviewing existing osteological, genetic, and iconographic evidence. We propose that cat domestication actually began in Egypt around the first millennium BC.”
Dr. Doherty’s team reassessed ancient cat artifacts from archaeological sites across Europe and North Africa, from antiquity to the present, utilizing zooarchaeological analysis, genetics, and radiocarbon dating. They found that the bones from agricultural villages in Cyprus dating back 900 to 500 years ago closely resembled those of Wildcats, undermining prior assumptions of early domestication.
Some misconceptions stem from the small size of cat bones, which can migrate between soil layers over time. “We employed radiocarbon dating to verify the ages, revealing that many cat remains are significantly more recent than previously believed.”
This data implies that the domestication of cats actually occurred much later than previously thought.
Millions of cats were sacrificed and mummified in ancient Egypt, dating from the late period to the Ptolemaic period (715-30 BC). – Getty
Researchers suggest that while rodent control may have played a role in domestication, religion could have been even more significant. In ancient Egypt, cats were revered as sacred to the goddess Bastet, and millions were kept for sacrificial purposes.
“The bond between domestic cats and the Egyptian goddess Bastet peaked in the first millennium BC,” Dr. Doherty noted. “Millions of mummified cats have been discovered in temples dedicated to her. During the Victorian era, these remains were often exhumed and transported to England for use as fertilizer.”
Through the breeding of vast numbers of kittens for ritualistic sacrifice, traits that made them more manageable may have gradually been selected, leading to the emergence of the domestic cat.
A second genome-related study, co-authored by Dr. Doherty, analyzed 87 ancient and modern cat genomes, finding no evidence that domestic cats migrated to Europe with Neolithic farmers. Instead, they likely arrived within the last 2,000 years from North Africa.
“I think this illustrates that the bond between humans and cats is not necessarily a result of the length of time they have been together, unlike with dogs,” Dr. Doherty stated.
Considering the motivations behind their early domestication, it is no surprise that cats exhibit such ethereal behavior.
Both studies are preliminary and are currently awaiting formal peer review.
Read more:
About our experts
Shawn Doherty is a senior researcher at the University of Exeter. His expertise lies in exploring deep time and animal-environment interactions through the integration of fauna, biomolecules (isotope analysis, proteomics, and genetics), alongside historical and anthropological studies.
Deserts like Death Valley can be an extraordinary source of drinking water
Mimi Ditchie Photography/Getty Images
The compact panels managed to extract a glass of clean water from the arid air of Death Valley, California.
Although the atmosphere over extremely dry regions can retain a significant amount of water, extracting it into usable supplies has proven challenging. Previous methods, including simple mesh fabrics and mist-capturing nets crafted from synthetic spider silk, have struggled to function effectively in real-world conditions.
Now, Xuanhe Zhao from the Massachusetts Institute of Technology and his team have created a unique water collector, about 0.5 meters tall and 0.1 meters wide. It features a glass panel embedded with absorbent hydrogels—gel-like substances formed from long polymer chains and lithium salts, enabling it to gather water molecules.
The hydrogel is designed to fold into an origami-like configuration, enhancing surface area to capture moisture during the night. The absorbed water evaporates when sunlight hits the glass panel the next day. The interior of the device is coated with a specialized cooling material, which collects the evaporated water as it condenses and drips into a storage compartment below.
Zhao and his team conducted a week-long test of the apparatus in Death Valley, where humidity can plummet to as low as 5%. In comparison, the annual average in London hovers around 70%. They discovered the device can harvest up to 160 milliliters of water each day, enough to fill a small glass.
It’s estimated that eight of these panels could meet the daily drinking water requirements of an average adult, making them especially beneficial in arid regions. “Given the compact design of the device, we believe larger arrays could provide drinking water to households for consumption,” says Zhao.
Zhao and his colleagues assert that while the device shows promise in real-world conditions, Daryl Williams from Imperial College London cautions that extended testing—beyond a week—could present challenges. “Outdoor environments are generally hostile. We want to observe how the device performs under such stress after three, six, or even nine months.”
Medieval scribes fill a volume called veterinarians with illustrations and descriptions of fantastic creatures. Manuscripts containing representations of these animals also relied on the beast zoo. These and other volume covers were made from calf, goat, sheep, deer and pig skins.
Most of these skins were removed before they were converted to book bindings. However, the medieval manuscript sets in northeastern France have a distinctive finish. The weathered cover is covered with hair.
Matthew Collins, a biofactorologist at the University of Copenhagen and Cambridge and author of the new study, said: However, it turns out to be difficult to pinpoint the source of hairy leather.
These furry books appear to be at home at the Hogwarts Library, but were originally written by Clairvaux Abbey, a hub of the Cistercians, the orders of the Catholic monk Ks. Founded in the Champagne Adennes region of France in 1115, the monastery was located in one of the largest monastery libraries in medieval Europe.
Approximately 1,450 volumes of the monastery’s extensive corpus survive. Approximately half of these manuscripts remain in the original, fragile bindings. Many were tied in Romanesque style in the 12th and 13th centuries, parchment was placed between wooden boards fixed with thread and cord.
At Clairvaux Abbey, these Romanesque books were often housed in secondary covers, bristled with fur. Traditionally, this creepy leather was thought to be made from wild boars and deer. However, the hair follicles of some manuscripts do not match the fur of either mammal.
Dr. Collins and his colleagues examined the hairy covers of 16 manuscripts once housed at Clairebaud Abbey. Researchers rubbed the sides of the leather meat with an eraser and carefully removed the crumb-sized sample. We then used various techniques to analyze the protein sequences and bits of the ancient DNA of leather.
Their findings published in the journal on Wednesday Royal Society Open Sciencereveals that the book is tied to seal skins, not to local land mammal skins. Some books are tied up in the skin of harbor seals, and at least one came from harp seals. Comparing them to modern DNA suggests that the origins of Scandinavian and Scottish seals, or as far as Iceland and Greenland.
These different territories were once connected by complex medieval trading networks. During the Middle Ages, Scandinavian traders harvested walrus ivory and fur from Greenland and sent them to mainland Europe. Clairebaud and his monks were far more inland from these coastal front posts, but the monastery was near a trafficked trade route.
The discoveries shed light on medieval society, according to Mary Wellesley, a fellow at the London Institute of Historical Studies, who specializes in medieval manuscripts and was not involved in new papers.
“The small details of the manuscript can tell you a lot about the world that created them,” Dr. Wellesley said. “It’s a common assumption that people didn’t move around, but these monasteries are part of this incredible network of goods, books and ideas.”
Seals were a valuable product for meat, dull, waterproof skin. This could be made into boots or gloves. Some records even claim that Sealskin was used to pay church taxes. Coastal communities in Scandinavian and Ireland used Sealskin to bind books, but this practice was far more unusual in the mainland Europe.
However, Cistercian monks apparently liked Sealskin’s books. Examples of these furry manuscripts have been found in other Abbeys, descendants of Clairevaux. These monks used this material to combine the most important documents, including historical information about the Cistercians, historical information about St. Bernard.
According to Dr. Collins, the fur color of the seal may explain the preference of the monks for using animal skins. The cover of the manuscript is now yellowish-gray or spotted brown, but was once wrapped in the white fur of a seal puppy. This shade matched the best of the monks’ dissatisfaction.
“In medieval Europe, you really don’t have anything white or white,” said Dr. Collins. “It must have been very magical.”
The seal itself appears to resemble the magical entity of the monk ks. In medieval veterinarians, seals are labelled “sea calves,” resembling dogs that have raised fish tails.
Immediately after my 54th birthday, I received the package. The enclosed instructions said the next time I empty my intestines, I should shave a little of the stool, shave it into a small sample bottle, seal it in a prepaid envelope and drop it in a post. I did the act and a few weeks later I was invited to the hospital. My sample contained blood. Colonoscopy was ordered to rule out colorectal cancer.
Thankfully, I don’t have colorectal cancer. Colonoscopy of 54 is not a classic start to middle age. However, over the next few years, this particular rite of passage may begin to occur much earlier. The proportion of this cancer among people in my age group has been declining thanks to screening programs like this, but talking about under 50 years is much more troubling.
Early onset colorectal cancer (EOCRC) is now the circumstance, as is known in people under the age of 50, due to its virtually unprecedented nature of the 20th century. 10% of all new cases worldwide. That number is expected to more than double by 2030, and by then EOCRC is expected to be the most common form of fatal cancer among Americans aged 20-49.
The reasons are uncertain, but ambitious new projects explore potential causes. The idea is that EORC may also be a more clear and aggressive form of illness. Meanwhile, as routine screening expanded to younger groups – in January, the UK reduced the screening age to 50 – and the new, less invasive test…
In Einstein’s theory of gravity, mass distorts space-time, creating an effect known as gravitational time dilation. This means that observers with different gravitational potentials measure elapsed time differently. Therefore, when you are close to a black hole, time slows down compared to time that is far away from the black hole.
Observers far away from the black hole say that for objects that fall into it, time stops at the so-called “event horizon” (the edge of the black hole, the point of no return).
Nothing appears to cross the event horizon. However, an observer who falls into a black hole does not experience time stopping at the event horizon. They will see time passing normally, but far away from the black hole they will see time speeding up. The closer you get to the event horizon, the faster time appears to move farther away from the black hole.
Gravitational time dilation can actually be measured. In 1976, NASA launched an atomic clock into space to measure the passage of time at an altitude of 10,000 km (6,214 miles) compared to the Earth’s surface. The results of this measurement matched exactly what was expected from Einstein’s theory.
At sea level, time moves a billionth of a second slower per year than at the top of Mount Everest.
This article answers the question (asked by Sean Roberts via email): “What happens to time at the event horizon of a black hole?”
If you have any questions, please email us at:questions@sciencefocus.comor send us a messagefacebook,×orInstagramPage (remember to include your name and location).
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WWhen the baby parrots were delivered to Alice Soares de Oliveira’s desk, they had no wings and could barely open their eyes. The pair, housed in a dirty cardboard box, were just a month old and showed signs of not feeding well.
The parrot, along with two young toucans who arrived just under a month later, were victims of wildlife traffickers. They were all put up for sale on social media, probably snatched from their mother’s nest by poachers.
They were taken to Soares de Oliveira, a veterinarian. CeMaCAS, Wildlife Conservation Center in a forest on the outskirts of Brazil’s largest city, São Paulo, after being rescued by police surveillance networks on platforms such as Facebook and WhatsApp.
Illegal advertising of snakes for sale online in Brazil. Photo: Provided by RENCTAS
Social media has become an important tool for wildlife traffickers, experts say. For example, more people are using Facebook to promote the sale of endangered animals and their byproducts, often switching to messaging apps like WhatsApp to complete the sale.
Report published in October The Global Initiative against Transnational Organized Crime flagged 477 advertisements for 18 protected animals in Brazil and South Africa alone in three months this year. 78% of this was on social media.
The illegally traded parrot arrives at the CeMaCAS conservation center in poor condition after being rescued by the police. Photo: undefined/provided by CeMaCAS
Simone Haytham, director of environmental crime at the Global Initiative, said traders moved online after authorities cracked down on street markets. “The online space now provides a means for many of the world’s most endangered and most highly protected species to find consumers,” she says. “There’s a huge treasure trove of endangered species available for purchase online, but it’s no easy feat.”
Crawford Allan, vice president of nature crime at the World Wildlife Fund, said the pandemic has “systemized” wildlife crime online. “A lot of the public markets were closing down,” he says. “People couldn’t move, a lot of things went online, and it became the norm.”
Laws regarding the sale of wild animals vary by jurisdiction and species, so social media companies face a difficult situation in determining whether such ads are illegal. Nevertheless, experts say tech companies need to do more to determine when posts are risky.
Global Initiative combines AI technology and human analysis to detect suspicious ads online. The company’s reporting system, part of a project called Eco-Solve, covers Brazil, South Africa and Thailand, and will soon be expanded to India, Indonesia and the UAE.
Richard Scobie, executive director of TRAFFIC, an organization focused on wildlife trafficking, said advertising on social media allows sellers to “circumvent” the law and sell goods without telling buyers where they come from. He says it happens often.
“Companies need to allocate far more resources to regulating how users illegally trade wildlife parts and derivatives on their platforms,” he says. “Social media companies are working to combat illegal transactions on their platforms…but there is much more they can do.”
Some tech companies are taking steps to combat this problem. In 2020, Facebook introduced tags for some search terms to warn users of the dangers of wildlife trafficking, and meta was removed. 7.6 million posts in 2023according to the Coalition Against Online Wildlife Trafficking.
The coalition is a voluntary association that includes most of the major social media companies in the United States and China.
It announced that in 2021, 11.6 million posts were blocked or deleted by members.
Parrots illegally traded after being recovered at CeMaCAS. Photo: undefined/provided by CeMaCAS
WWF’s Alan was a founding member of the federation and continues to oversee its activities. He said tech companies have been receptive to activists’ attempts to clamp down on their activities, but job cuts in the industry are hurting progress.
“As a conservation organization, we always feel that people need to do more, but we also understand that they are dealing with terrorism, child safety and all the evil in the world that flows through social media channels. They have bigger and scarier problems to deal with,” he added.
“I feel that some companies have found a balance. Others haven’t. They’re not working hard enough or they’re inactive for some reason, so they step up and do more. You need to make an effort.”
A spokesperson for Meta, which owns Facebook and WhatsApp, said: “We do not allow activities related to the purchase, sale, lottery, gifting, transfer or trading of endangered or protected species on our services.
“We use a combination of technology, team reviews, and user reports to identify behavior that violates our Terms of Service and respond to valid requests from law enforcement.”
Wildlife trafficking threatens biodiversity and can lead to the extinction of certain species. According to 2023 Forensic Science International articlesapproximately 5,209 animal species are endangered or nearly endangered due to “use and trade.”
Illegal online advertising of macaws for sale in Brazil. Photo: Undefined/Courtesy of RENCTAS
Mr Haytham said: [being advertised for sale online] It is protected as it is on the verge of extinction. They are protected because trade poses a major threat to their survival. ”
Soares de Oliveira of São Paulo believes the birds in his care have a bright future. Veterinarians at CeMaCAS care for hundreds of birds and animals at a time. She is confident that the parrot and toucan will make a full recovery and be released back into the wild.
“They are in the middle of rehabilitation. They are still young so we are monitoring them, but I think they will be able to live a free life in three months,” she says.
Find more coverage of extinction ages here and follow biodiversity reporters Phoebe Weston and Patrick Greenfield on the Guardian app for more nature coverage.
The Atlantic hurricane season officially ends Saturday.
The pattern of activity surprised forecasters. The season was busy early on, with strong storms occurring later in the season, but quiet during what is normally considered the peak period.
Climate change has most likely caused the observed storms to become more intense.
A bizarre and devastating hurricane season officially came to an end Saturday, and forecasters are looking into its many surprises.
Philip Klotzbach, a Colorado State University meteorologist who specializes in Atlantic hurricane forecasting, said, “Every year there are one or two things that bother me, but this year there were more than usual.” he said.
Most forecasters are predicting a very active hurricane season as early as April, and the National Oceanic and Atmospheric Administration has released its best forecast ever.
In the end, there were 18 named storms, 11 hurricanes, and 5 major hurricanes. Although this was at the low end of the range most forecasters expected, it was still above normal and a “very active” season.
What surprised researchers was how strange the season unfolded. It got off to a roaring start in June when Hurricane Beryl became the first Category 5 storm to be observed in the Atlantic Ocean. But from mid-August to early September, everything went quiet. The season typically reaches its peak around September 10th. But it was the first time since 1968 that no named storm formed during those weeks.
Just when researchers thought their predictions were wrong, storm activity picked up again and Hurricanes Helen and Milton struck, causing billions of dollars in damage.
Hurricane Milton made landfall in the Gulf of Mexico on October 8th. NOAA/NESDIS/Star
“The normal seasonal cycle has been reversed,” Klotzbach said. “What was striking to me was that it was like a switch was flipped, completely off, then completely on. For Helen, nothing happened, and for East Atlantic and Milton, The storm continued.”
Researchers are studying what causes this strange pattern to better understand the factors that cause hurricanes and improve future predictions.
Researchers predicted this spring's hurricane season would be busy and dangerous because of record-high ocean temperatures in the Atlantic Ocean and the possibility that La Niña, a pattern of natural fluctuations, could take hold. Ta. Ocean heat provides fuel for hurricanes and can intensify them faster. La Niña is associated with hurricanes because it often reduces atmospheric stability.
“Early on, we thought it was going to be our busiest season on record,” Klotzbach said.
Although ocean temperatures remained at or near record highs in the North Atlantic, La Niña events did not develop as strongly, said Matthew Rosen, chief hurricane forecaster at the NOAA Climate Prediction Center, a division of the National Weather Service. Krans said.
A combination of other factors most likely contributed to the alarming stagnation in activity.
Approximately 60% of hurricanes occur as a result of Africa's tropical monsoon season. draws moisture into an area called the Sahel. However, this year's monsoon developed elsewhere.
“The monsoon reached so far north and was so strong that it reached areas that hadn't had rain in 45 years,” Rosencrans said, adding that this change had weakened the development of tropical cyclones. Ta.
Rosencrans said another climate pattern, called the Madden-Julian Oscillation, a group of storms that pass near the equator, also likely contributed, with storm development slowing in early September and then later in the month. It is said that hurricanes are starting to occur.
Researchers will spend the winter examining which factors had the most influence through climate and weather models.
“This is an opportunity to learn, to observe systems and let the Earth teach us something new,” he said.
Despite a mid-season interruption due to a tropical storm, 2024 set several records. According to a review published by Klotzbach, five hurricanes have made landfall in the continental United States, tied for the second-highest number in history.
Destroyed and damaged buildings in the aftermath of Hurricane Helen's flooding in Batcave, North Carolina, on October 8. Tama Mario/Getty Images File On September 28, heavy rains from Hurricane Helen caused record flooding and damage in Asheville, North Carolina. Melissa Sue Gerrits/Getty Images File
Helen was the most powerful hurricane to hit Big Bend, Florida. Since September 25th, seven hurricanes have formed in the Atlantic Ocean, the most on record.
Hurricane Milton set a record for tornado warnings in Florida, spawning dozens of tornadoes.
Research suggests climate change has worsened Helen and Milton's symptoms. Both hurricanes underwent a rapid intensification process, with their sustained wind speeds increasing by at least 35 miles per hour over a 24-hour period. This trend is becoming more common as global temperatures rise.
Rosenkrans said research generally does not suggest that the number of named storms (winds of 39 miles per hour or more) will change with climate change. However, a larger proportion of named storms are expected to become hurricanes, with the majority of those hurricanes reaching Category 4 or 5. That was the case this year as well.
Turbulence is a common occurrence during flights and can sometimes be dangerous. It can result in emergency landings and even fatalities.
In May 2024, a flight from London to Singapore had to make an emergency landing after encountering severe turbulence over Myanmar. Sadly, one passenger died, and many others were hospitalized.
Shortly after this incident, another flight from Doha to Dublin experienced turbulence, leading to several passengers being hospitalized. These incidents raise concerns about the frequency and severity of turbulence.
Turbulence is typically caused by sudden changes in airflow due to various factors like storm clouds, fronts, and air movement over mountains. Pilots can often anticipate and avoid these known forms of turbulence.
However, clear-air turbulence, which occurs without warning due to speed differences between air masses, poses a more significant risk. This type of turbulence is invisible and challenging to detect, making it particularly dangerous for passengers and crew.
Experts predict that turbulence will increase with climate change, with clear-sky turbulence already on the rise. Studies show a significant increase in wind shear and severe turbulence on common flight routes, with projections indicating a further rise in turbulence incidents in the coming years.
While the risk of turbulence-related injuries remains relatively low, it is essential for passengers to always wear their seat belts during flights. This simple precaution can reduce the likelihood of injuries during turbulent conditions.
If you have any questions or concerns about turbulence or climate change’s impact on air travel, feel free to contact us via email at questions@sciencefocus.com or reach out to us on social media.
For more intriguing science facts and information, visit our website for engaging content.
This article (by Dominic Hamilton in London) addresses the impact of climate change on turbulence during flights.
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Have you ever experienced it? Throwing a Frisbee to a friend, only for it to end up in the middle of a nearby picnic. Researchers at Berry College in Georgia may have found a solution to this embarrassment by discovering the optimal way to hold the disc for maximum performance.
A study conducted by the researchers involved professional and amateur disc golfers to investigate how different thumb positions affect disc throwing. The research revealed that positioning the thumb approximately 3 centimeters from the outer edge of the disc led to the fastest launch and spin speeds.
“For amateur players unsure of where to place their thumbs, starting at the 3cm position is a good choice,” said lead author Dr. Zachary Lindsey.
Disc golf, a sport where players throw a disc towards a metal basket, was established in the 1960s in the United States and is now played by approximately 108,000 players from 40 countries under the Professional Disc Golf Association.
To analyze techniques for enhancing players’ skills, Lindsey’s team utilized miniature sensors to examine the speed and rotation of discs thrown by 24 players. Through 600 pitches, it was observed that higher spin rates correlated with faster launch rates.
A 2020 study published in the European Journal of Applied Physics indicated that disc stability and flight distance can be improved by increasing frisbee spin. Physicists have also kept themselves busy during lockdown by studying how faster spin results in longer flight distances and faster launches.
The study concluded that the optimal thumb position for achieving the fastest launch and highest spin speeds is at the sweet spot, 3 cm from the center. Scientists are eager to further explore whether this position is effective for Frisbees of all sizes.
Astronomers using the NASA/ESA Hubble Space Telescope have obtained a surprising new perspective of the intermediate spiral galaxy Messier 90.
This Hubble image shows Messier 90, an intermediate spiral galaxy located 53.8 million light-years away in the constellation Virgo. Image credits: NASA / ESA / Hubble / D. Tilker / J. Lee / PHANGS-HST team.
Messier 90 is located approximately 53.8 million light years away in the constellation Virgo.
This spiral galaxy, also known as M90 or NGC 4569, was discovered by French astronomer Charles Messier on March 18, 1781.
Messier 90 is the brightest member of this bunch. Virgo Cluster is a group of about 1,300, sometimes up to 2,000 galaxies.
This galaxy is remarkable, as it is one of the few galaxies that appear to be moving toward the Milky Way, rather than away from it.
“In 2019, images of Messier 90 Hubble's Wide Field and Planetary Camera 2 (WFPC2) was imaged in 1994, shortly after the camera was installed,” Hubble astronomers said in a statement.
“That image has a distinctive stair-step pattern due to the layout of WFPC2's sensor.”
“Hubble used WFC3 in 2019 and again in 2023 when it switched caliber to Messier 90.”
“We processed the resulting data to create this surprising new image, providing a more detailed view of the galaxy's dusty disk, gaseous halo, and bright center.”
“The inner region of the Messier-90 disk is a site of star formation, highlighted here by red H-alpha light from the nebula, which is absent in other parts of the galaxy,” the astronomers said.
“Messier 90 is located within a relatively nearby galaxy in the Virgo cluster, and its orbit followed an orbit close to the cluster's center about 300 million years ago.”
“The gas density in the inner cluster weighed down on Messier 90 like a strong headwind, stripping enormous amounts of gas from the galaxy and creating the diffuse halo we see here around the galaxy.”
“This gas will no longer be available for Messier 90 to form new stars, resulting in its eventual demise as a spiral galaxy.”
“Its trajectory through the Virgo Cluster has accelerated so much that it is on the verge of escaping the cluster altogether, and coincidentally it is moving in our direction. Other galaxies in the Virgo Cluster are also moving in our direction. They have been measured at similar speeds, but in opposite directions.''
“Over billions of years to come, we will get a better view of Messier 90 as it evolves into a lenticular galaxy.”
Evidence of antimatter in cosmic rays has been discovered by scientists, suggesting the potential existence of a new type of particle. These particles could be a part of dark matter, a mysterious substance that makes up 85 percent of the universe’s mass but has never been directly observed.
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A recent study indicates that antihelium particles, the antimatter form of helium, detected by instruments on the International Space Station may have originated from a new class of weakly interacting massive particles (WIMPs). It is believed that dark matter could be made up of WIMPs.
“WIMP is a theoretical particle that could potentially be a perfect candidate for dark matter,” explained lead author Pedro de la Torre Luque, a physicist supporting research at the Institute of Theoretical Physics in Madrid. “Many proposed models have been ruled out, leaving only a few surviving theories.”
The antihelium core observed during cosmic ray research on the space station’s alpha magnetic spectrometer (AMS-02) may have been the result of two WIMPs colliding and annihilating each other. This collision could have generated matter, antimatter, and energy.
Antimatter is essentially the “mirror image” of normal matter, with the same mass but opposite properties such as charge.
While some antimatter may have been created during the Big Bang, researchers believe that additional antimatter is continuously generated by specific cosmic events, although it is challenging to observe.
“The observation of antihelium was thrilling because it indicates an unusual phenomenon occurring in the interstellar medium, where the production of antiparticles is unexpected,” stated De La Torre Luque.
“Theoretical forecasts suggest that even though cosmic rays interact with interstellar gas to produce antiparticles, the presence of antinuclei, particularly antihelium, should be extremely rare.”
“We anticipated discovering an antihelium event once every few decades, but the approximately 10 antihelium events observed by AMS-02 resulted from standard cosmic ray interactions. Therefore, these antihelium occurrences provide a promising clue to WIMP annihilation.”
The 34th Ig Nobel Prize was awarded today for 10 unexpected things – all so surprising that, in keeping with the Prize's long tradition, it makes people laugh and makes them think.
of Award Ceremony The event took place at the Massachusetts Institute of Technology, where the lecture hall was filled with paper airplanes thrown by audience members honoring the Ig Nobel tradition of bringing in pieces of paper to be transformed into disposable aircraft.
Peaceful Dove
This year's Ig Award winners cover a wide range of subjects, including humans, plants and other behaviours, including some birds.
Before deciding to use live pigeons to guide the flight path of a missile, you might want to conduct an experiment to see if it's feasible to house a pigeon at the nose of a missile. Such an experiment was conducted in the 1940s by psychologist B.F. Skinner, who was posthumously awarded this year's Ig Nobel Peace Prize.
Skinner's daughter Julie attended the ceremony and accepted the award on his behalf. B.F. Skinner was a giant in the field of behaviorism. A few years after his experiment with putting pigeons on missiles, he Written“Something happened in the short time frame of the Pigeon project that took a long time to be understood. The practical challenges before us have led to new ways of thinking about organismic behavior.”
A botanical sense of style
A similar rethinking of attitudes could come from the work of Jacob White and Felipe Yamashita, two 2024 Ig Nobel Prize laureates in Botany. They found evidence that some real plants mimic the shapes of their artificial plastic neighbors. For more information, see their study,Bochyra trifoliata Mimicking the leaves of an artificial plastic host plant“
Marjolaine Willems and her colleagues won the anatomy prize for investigating whether the hair of most people in the Northern Hemisphere curls in the same direction (clockwise or counterclockwise) as the hair of most people in the Southern Hemisphere.
Countless metaphors and phrases are associated with the work that earned Takebe Takanori and his colleagues the Nobel Prize in Physiology or Medicine. Found Many mammals can breathe through their anus.
The tenacity of the Probability Prize winners František Bartos, Erik Jan Wagenmakers, Aleksandra Sarafoglu and Henrik Godman, along with around 50 colleagues, many of them students, has paid off. ShowedWe know, both in theory and from 350,757 experiments, that when you flip a coin, it tends to land on the same side as you started with.
Painful placebo
Lieven Schenk, Tahmin Fadai and Christian Büchel won the medicine prize for demonstrating that a placebo that causes painful side effects can be more effective than a placebo that does not cause painful side effects.
(Their study It reminds me of the prize-winning paper by Dan Ariely and his colleagues, but doesn't explicitly cite it. 2008 Medicine Award They demonstrated that expensive counterfeit medicines are more effective than cheaper counterfeit medicines.
Jimmy Liao won the Physics Prize for demonstrating and describing the swimming ability of dead trout. series ofpaper He writes about his discovery of this unexpected aspect of fluid mechanics.
Drunken Bug
Earthworms can stay drunk and can become drunk when they consume alcohol. Tess Heremans, Antoine Debray, Daniel Bon and Sander Woutersen method Chromatography is used to separate drunk and non-drunk bugs.
The research award for demography (the statistical study of population) went to Saul Justin Newman for his research exploring whether demographers notice important details: Newman found that many of the people famous for having lived the longest lived in places where birth and death records were poorly kept.
This year's gathering of Ig laureates ended with a flourish: Fordyce Ely and William E. Petersen were posthumously awarded the biology prize. experiment That's just what they did in the 1940s: They exploded a paper bag next to a cat standing on a cow's back to see when and how the cow would spill milk.
Eli's daughter Jane and grandson Matt were also in attendance to accept the award and watch demonstrations including a toy cat, a man in a cow costume and five Nobel Prize winners making an exploding paper bag.
Marc Abrahams is the founder of the Ig Nobel Prize ceremony and co-founder of the journal Annals of Improbable Research. He previously worked on unusual uses of computers. His website is Impossible.
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