Research Links Low Vitamin D Levels to Higher Risk of Covid-19 Hospitalization

A recent analysis utilizing data from the UK Biobank revealed that vitamin D deficiency is linked to a higher risk of COVID-19 hospitalization, though there is only a weak association with the risk of infection.

Monroy-Iglesias et al. The nested case-control study was based on individuals with serum vitamin D level measurements in Baseline (2006-2010) within the Biobank Cohort, documenting COVID-19 PCR results and prior cancer diagnoses.

The widespread impact of COVID-19 on healthcare services has sparked considerable research interest aimed at understanding the potential pathophysiological mechanisms underlying the disease.

At the onset of the pandemic, numerous studies were conducted to examine various risk factors influencing rates of COVID-19 infection, severity, and mortality.

Factors that have consistently emerged include age, male sex, smoking status, obesity, specific ethnic backgrounds, and immune system compromise, which all contribute to severe disease and a heightened likelihood of mortality.

Vitamin D is essential for regulating both innate and adaptive immune responses.

Deficiency in vitamin D has been linked to a higher susceptibility to respiratory infections and is considered a risk factor for the development of severe, persistent inflammation, which may precede acute respiratory distress syndrome.

Consequently, several investigations have focused on the correlation between vitamin D levels and the risk of COVID-19 from the beginning of the pandemic.

Emerging evidence suggests a connection between vitamin D deficiency and both the likelihood of COVID-19 infection and the severity of the disease.

“Our goal was to utilize UK Biobank data to explore the relationship between vitamin D levels and the risks of both COVID-19 infection and hospitalization,” stated Dr. Maria Monroy Iglesias of King’s College London.

“We also assessed these associations across the general population, a subset of cancer patients, and examined potential differences related to ethnicity.”

The authors analyzed data from over 150,000 participants in the UK Biobank to ascertain whether the risk of COVID-19 was elevated among those with vitamin D deficiency (<25 nmol/L in blood) and vitamin D insufficiency (25-49 nmol/L).

Additionally, they compared hospitalization risks due to COVID-19 across these three groups.

“These findings can help identify at-risk individuals and inform future public health guidance,” noted Dr. Kerri Beckmann, a researcher with the University of South Australia.

“Given vitamin D’s important role in immune regulation, it is possible that low levels may influence responses to infections like COVID-19.”

“Our study indicated that individuals with vitamin D deficiency or insufficiency had a higher likelihood of being hospitalized due to COVID-19 compared to those with adequate vitamin D levels; however, they were not necessarily more prone to contracting the virus in the first place.”

The research team also explored the association between vitamin D and COVID-19 outcomes among cancer patients across different ethnic backgrounds.

It was found that individuals of Asian or African/Afro-Caribbean descent had a marginally increased risk of infection at lower vitamin D levels, while the link between vitamin D and severe illness was predominantly observed in individuals of white backgrounds.

Although no significant correlation was detected between vitamin D levels and COVID-19 outcomes among individuals previously diagnosed with cancer, researchers cautioned that this may stem from smaller sample sizes.

“While the overall risk of COVID-19 has diminished over time, the virus continues to pose a public health challenge,” Dr. Beckmann remarked.

“COVID-19 may not be the threat it once was, but it continues to impact individuals’ well-being.”

“Understanding which populations are most vulnerable enables those individuals to take necessary precautions, such as keeping track of their vitamin D levels.”

“Individuals already in poor health may naturally have lower levels of vitamin D.”

“As such, it’s still unclear whether vitamin D supplementation can mitigate the severity of COVID-19.

“This remains a topic worthy of further investigation, especially as we adapt to living with the virus.”

Survey results will be published online in the journal PLOS 1.

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MJ Monroy-Iglesias et al. 2025. The effects of vitamin D on COVID-19 risks and hospitalizations in the UK Biobank. PLOS 1 20(7): E0328232; doi: 10.1371/journal.pone.0328232

Source: www.sci.news

Paleontologists Uncover First Evidence of a Multi-Species Dinosaur Herd

Paleontologists have uncovered footprints that are 76 million years old, belonging to a dominant group of Ceratopsian dinosaurs, in Dinosaur Provincial Park, Alberta, Canada. This remarkable finding is the first indication of herd behavior among mixed dinosaur species, reminiscent of how modern wildebeests and zebras flock together on the African savannas.



Salatopsian herd (Styracosaurus albertensis) accompanied by ankylosaurus (Euplocephalus tutus) walking through old river channels under the watchful eyes of two Tyrannosaurus (Golgosaurus libratus). Image credit: Julius Csotonyi.

Dinosaur Provincial Park, located in southern Alberta, Canada, is one of the premier regions in the world for studying late Cretaceous terrestrial ecosystems.

The park yields hundreds of dinosaur skeletal remains and a vast array of bones and teeth, making it a prime location for exploring dinosaur evolution, behavior, biological introduction, and paleoecology.

Despite the wealth of skeletal remains, dinosaur footprints and trackways are surprisingly uncommon.

“In 2024, we discovered a new track site, a skyline track site containing ‘typical’ natural mold tracks that had not been identified in the park before,” stated Dr. Phil Bell and his colleagues at the University of New England.

At this site, paleontologists uncovered 13 Seratopsia (horned dinosaurs) tracks, showing at least five animals walking side by side, along with an ankylosaurus (armored dinosaur) that might have been walking among them.

They were also intrigued to find two large Tyrannosaurus tracks alongside the group. Additionally, a footprint from a smaller meat-eating dinosaur was also discovered.



View of the Skyline Track Site immediately after its discovery (a) and during excavation (b). Image credits: Bell et al., doi: 10.1371/journal.pone.0324913.

“I have been collecting dinosaur bones in Dinosaur Provincial Park for nearly two decades, but I had never given much thought to footprints,” remarked Dr. Bell.

“The edge of this rock had a mud-like appearance that caught between my toes, which immediately intrigued me.”

“The Tyrannosaurus tracks give the impression that they are truly observing the herd.”

“It was thrilling to see them walking in the footprints of dinosaurs 76 million years after they went extinct,” said Dr. Brian Pickles from Reading College.

“Using innovative search techniques, we were able to locate several additional track sites throughout the park’s diverse terrain. We will provide further details on how these captivating creatures interacted and behaved in their ecosystems.”

“This discovery highlights the vast amount left to uncover in dinosaur paleontology,” noted Dr. Caleb Brown, PhD, from the Royal Tyrrell Museum of Paleontology.

“Dinosaur Park boasts one of the world’s most comprehensive dinosaur collections and studies, with over a century of dedicated research. Only now are we beginning to fully explore the potential of dinosaur trackways.”

The findings are published in a paper in the journal PLOS 1.

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PR Bell et al. 2025. A track site controlled by Ceratopsids from the Campanian in Dinosaur Provincial Park, Alberta, Canada. PLOS 1 20(7): E0324913; doi: 10.1371/journal.pone.0324913

Source: www.sci.news

Breakthrough Study Unveils First Accurate Explanation of Lightning Formation in Nature

A recent study by Professor Victor Pasco from Pennsylvania and his team reveals the method for determining the robust electric field associated with thunder, which collides with molecules such as nitrogen and oxygen, resulting in x-rays that trigger intense storms through additional electrons and high-energy photons.

NASA’s high-population ER-2 plane is equipped with instruments for the fly-eye Earth Intake Mapper Simulator and the Ground Gamma Ray Flash (ALOFT) Mission, which records gamma rays from ThunderClouds (illustrated in purple). Image credit: NASA/ALOFT team.

“Our research provides an accurate and quantitative explanation of the initial processes leading to lightning,” stated Professor Pasco.

“It connects the underlying physics of X-rays, electric fields, and electron avalanches.”

In their study, Professor Pasco and colleagues employed mathematical modeling to validate and elucidate field observations related to photoelectric phenomena within the Earth’s atmosphere.

This phenomenon, known as terrestrial gamma-ray flashes, consists of invisible, naturally occurring bursts of x-rays along with their associated radio emissions.

“By creating a simulation that mirrors the observed field conditions, we offered a comprehensive explanation of the x-rays and radio emissions occurring inside Thunderclouds,” added Professor Pasco.

“Our research illustrates how electrons, accelerated by lightning’s strong electric field, can generate x-rays upon colliding with air molecules like nitrogen or oxygen, leading to an avalanche of electrons that create high-energy photons to initiate lightning.”

Through their model, the researchers analyzed field observations gathered by various research teams utilizing ground-based sensors, satellites, and high-altitude surveillance platforms to simulate thunderstorm conditions.

“We elucidated the mechanisms of photoelectric events, the triggering conditions for electron cascades in thunder, and the sources of diverse radio signals detected in clouds preceding a lightning strike,” explained Professor Pervez.

“To validate the lightning initiation explanation, I compared our findings with previous models, observational studies, and my own investigations into lightning bolts, specifically intercompact cloud discharges that typically occur within limited regions of Thunderclouds.”

This process, termed photoelectric feedback discharge, models the physical conditions where lightning is likely to happen.

The equations employed to develop the model are available in the published papers, enabling other researchers to apply them in their own studies.

Besides elucidating the onset of lightning, the scientists clarified why ground-level gamma-ray flashes can often occur without the accompanying light and radio emissions that signify lightning in rainy conditions.

“In our simulations, the high-energy X-rays generated by relativistic electron avalanches create new seed electrons driven by photoelectric phenomena in the air, rapidly amplifying these avalanches,” Professor Pasco remarked.

“Moreover, while this runaway chain reaction is generated in a compact volume, it can happen across a varied range of intensities, often with minimal optical and radio emissions but detectable X-ray levels.”

“This explains why these gamma-ray flashes originate from regions that are visually dim and appear silent in wireless frequency.”

The team’s findings will be published in the Journal of Geophysical Research: Atmospheres.

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Victor P. Pasco et al. 2025. The photoelectric effect in the air accounts for the initiation of lightning and the occurrence of terrestrial gamma rays. JGR Atmosphere 130 (14): E2025JD043897; doi: 10.1029/2025JD043897

Source: www.sci.news

Ancient Herbivorous Dinosaur Discovered in Argentina, Dating Back 95 Million Years

Paleontologists from Argentine Patagonia have unearthed parts of the posterior skull from the previously unknown sauropod dinosaur, Levvatissaurus.



Reconstruction of the life of Astigmasaura genuflexa. Image credit: Mattia Yuri Messina.

The newly identified dinosaurs thrived in what is modern-day Argentina during the late Cretaceous period, around 95 million years ago.

This species has been scientifically named Astigmasaura ungflexa and measured approximately 18 meters (59 feet) in length, weighing over 10 tons.

These ancient giants belong to the Rebbachisauridae, a large family of sauropod dinosaurs within the superfamily Diplodocoidea.

“Rebbachisaurids are medium to large, non-selective, ground-level browsers, characterized by highly specialized skulls, elongated axial elements, and gracile appendicular skeletons.”

“Fossils from Levubatisaurus, spanning the early to late Cretaceous, are particularly diverse within the ancient supercontinent Gondwana, with numerous specimens discovered in North Africa and South America.”

“Notably, Patagonia has produced more than half of all known rebbachisaurids, including the earliest forms and the most recent Rebbachisaurus.”



Fieldwork in the El Orejano region of the Huncul Formation in Patagonia, Argentina. Image credit: Flavio Bellardini.

Fossilized remains of Astigmasaura ungflexa were found in the El Orejano area of the Huncul Formation within the Neuquén Basin in Patagonia, Argentina.

The material type of Astigmasaura ungflexa was described by paleontologists.

This new species represents one of the last Levubatisaurus dinosaurs before it went extinct around 90 million years ago.

Astigmasaura ungflexa shares a variety of traits with other rebbachisaurids, including anterior caudal vertebrae with tall neural spines and tetrameric nerve layers, an asymmetrical neural arch, a mesolaterally compressed proximal tibia, and medially tilted distal condyles and femurs,” the researchers noted.

“Furthermore, Astigmasaura ungflexa displays a unique combination of diagnostic features that set it apart from all other sauropods.”

“This new finding not only enhances our understanding of the previously unexplored caudal and pelvic girdle anatomy of Rebbachisauridae but also indicates greater taxonomic diversity within the family during the late stages of evolutionary history than previously recognized.”

The team’s paper was published online in the journal Cretaceous Research.

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Flavio Berardini et al. 2025. Alongside the Titans: a new Levuvacisaur dinosaur from the Huncul Formation (Upper Cenomanian) of Patagonia, Argentina. Cretaceous Research 176:106188; doi:10.1016/j.cretres.2025.106188

Source: www.sci.news

The Emergence of Freshwater on Earth: A Sciworthy Exploration

The name Hadian Ion is derived from Hades, the Greek god of the underworld, and is used by geologists to describe Earth’s first 600 million years. While scientists initially believed that a sea of lava engulfed the Earth during the Hadean Eon, recent discoveries have revealed minerals from that era in newly formed rocks. These minerals, known as Zircon, indicate that Hadean Earth likely featured solid land, oceans, and possibly even an active water cycle.

Researchers from the United Arab Emirates, Australia, and China have been investigating whether freshwater existed on Hadean Earth. They collected sandstone samples from Jack Hills in Australia, which contained grains eroded from ancient rocks that housed weather-resistant zircon. Previous studies have shown that 7% of the zircon grains from Jack Hills date back to the Hadean Eon, making them among the oldest materials available today.

The team noted that zircon grains are ideal for this study because they retain the same chemical composition as crystallized Hadean magma. This allows researchers to analyze zircon grains to discern the original magma’s composition. To select the appropriate grains, researchers photographed the zircons and illuminated them with an electron beam using a method called Casodoriminesense.

The researchers focused on zircon particles that were structurally intact and exhibited homogeneous color and fluorescence. They measured uranium abundance and analyzed lead atoms with varying neutron counts. Using a technique called Mass analysis, they examined isotopes in the zircon. The ratio of these isotopes, 238U and 206Pb, provides insight into the age of the crystal and its origins.

The researchers also assessed the ratios of two oxygen isotopes, 18O and 16O, within the zircon. They explained that these oxygen isotope ratios are highly sensitive to interactions between liquids and rocks, allowing them to trace the variations in the Jack Hills Zircons’ O-isotope ratios to determine when the hydration cycle began. Their findings confirmed that the zircon grains originated from a primary magma source.

Next, the researchers analyzed how different oxygen isotope ratios in zircon were generated. They explained that 18O is heavier than 16O due to its additional two neutrons. Typically, zircon crystals formed in magma share oxygen isotope ratios similar to those in modern seawater. Higher heavy oxygen isotope ratios indicate the incorporation of more 18O fragments from the Earth’s crust rather than from seawater.

Meanwhile, interactions between magma and liquids produce distinct oxygen isotope ratios. Some zircons exhibited lighter oxygen isotope ratios of 18O, more than found in contemporary seawater. For such ratios to form, the magma must be at high temperatures and in contact with liquid. The researchers identified zircon crystals that crystallized with very light oxygen isotopic ratios between 200 million and 4 billion years ago, suggesting that the original melt interacted with surface water. These ratios imply that land emerged above the oceans, allowing water to accumulate on Earth’s surface.

To further investigate, the researchers employed computational models to determine the type of surface water that influenced the extreme oxygen isotope ratios in zircon particles. They tested whether the zircon oxygen isotope ratios result solely from interactions with seawater, freshwater, or a mix of both. Their findings indicated that magma interacting only with seawater could not account for the observed oxygen isotope ratios, suggesting a combination of influences. Consequently, researchers proposed that freshwater interacted with early Hadean crust over tens of millions of years to generate light oxygen isotopic ratios.

The researchers concluded that an active water cycle existed on early Earth. They noted that this revised timeline for the onset of the water cycle could significantly impact the emergence of life on Earth. The presence of land above sea level, freshwater, and an active water cycle implies that the building blocks for life may have been present just 550 million years after Earth’s formation. They theorized that life could have potentially originated in freshwater reservoirs in exposed crust. Ongoing research into geological materials from this period may yield further insights into the early processes that facilitated the emergence of life.


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Source: sciworthy.com

Fame: A Clever and Thrilling Journey Over 30 Years

Angier (Hugh Jackman) shines in the cinematic adaptation

AJ Photos/Alam

fame
Priest Christopher (available in the UK and the US)

fame is perhaps most recognized for Christopher Nolan’s 2006 film adaptation of “The Prestige.” However, the accompanying books have captivated audiences and are often celebrated as literary masterpieces.

I only picked up this book recently, as I initially thought it revolved around stage tricks. Many claim to delight in the magician’s artistry, but I’d rather invest my evening enjoying something else. I was skeptical about reading a book focused on stage magicians from the late 19th century.

However, a conversation with science fiction writer Adam Roberts last year led me to ask him for his favorite sci-fi authors, to which he quickly included Christopher Priest. fame, no matter your stance on stage magic.

This sparked my interest, despite my reluctance towards the flashy white gloves and top hats. Plus, Tor’s republishing of the novel marks 30 years since its initial release, complete with a new introduction by John Clute. (Priest sadly passed away last year.)

Within the story are two distinct but closely related stage tricks and their mechanisms. Our primary protagonist (a loose term) is Magician Alfred Borden, known for his trick named The Transported Man. In essence, it features Borden entering one side of the stage and reappearing in a booth on the opposite end to thunderous applause.

If you appreciate complex and skillfully designed puzzle mysteries, this book is definitely for you.

However, Borden has a rival named Rupert Angier, who becomes obsessed with deciphering Borden’s transportation tricks. Angier then creates his own magical marvel, seemingly appearing instantly from within a blinking machine to another part of the theater.

Now it is Borden who grapples with unraveling the mystery of Angier’s performance, teetering on the edge of madness in his quest to uncover it. This intense rivalry culminates in a generational cycle. Consequently, Borden and Angier share narration duties with their respective descendants.

The novel is genuinely gripping, pulling you in like a magician enthralling an audience. Yet, it’s much more sophisticated than it seems at first glance.

I’ve yet to test this theory, but I believe you can read various sections in almost any order, and it remains engaging and comprehensible. In essence, it’s surprisingly well-constructed.

Concerning genre, it won the World Fantasy Award upon its initial release, but it incorporates elements of science, including real-life figures like inventor Nikola Tesla, and is often classified as science fiction today. The book’s atmosphere has gothic and steampunk influences, with a vintage style fitting for its period.

So if you’re a fan of intricate and beautifully crafted puzzle mysteries, this book is certainly worth your time. It triumphs in both plot and expertly managed suspense. I’m excited to see Nolan’s film adaptation, which is reportedly quite different from the book, but Priest himself praised the film and believed Nolan executed it well.

I would also suggest Emily…

World War
HG Wells (various publishers)
Given that Christopher Priest served as Vice President of the HG Wells Association, it seems fitting to recommend reading (or re-reading for many) this significant work. Originally published in 1898, it’s astonishingly modern in many ways. It’s a cornerstone of classic science fiction, even before the genre was officially recognized. I recommend it simply because it’s a classic worth revisiting.

Emily H. Wilson is the former editor of the New Scientist and author of the Sumerian trilogy set in ancient Mesopotamia. The final book in the series, Ninshuval, is set for release in August. You can find her online at emilyhwilson.com or follow her on x @emilyhwilson and instagram @emilyhwilson1

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You Could Potentially Share Near-Infinite Quantum Entanglement

Quantum entanglement can be treated as a shareable resource

Peter Julik/Aramie

Quantum entanglement, an enigmatic connection between particles, serves as a crucial asset for quantum computing and communication, and in some instances, can be shared almost limitlessly.

Numerous quantum operations, including the secure transfer of encrypted quantum data and computations on quantum systems, depend on multiple entangled particles. Ujjwal Sen and his team at the Harish Chandra Research Institute in India have inquired whether entanglements can be shared rather than created anew.

“We imagined a scenario where someone possesses an abundance, like money or treats, willing to distribute it among children, employees, or others,” he explains.

To explore this idea, his team formulated a mathematical model featuring two hypothetical researchers, Alice and Bob, who share entangled particles. When additional researchers, Charu and Debu, require entanglement but cannot generate their own, the first pair must assist.

Their calculations indicated that if Charu’s particles interacted with Alice’s, and Debu’s with Bob’s, the initial pair could transfer part of their entanglement to the latter pair. Kornikar Sen, another researcher at the Harish Chandra Research Institute, clarified that although Charu and Debu couldn’t interact with each other, they could utilize a shared “entanglement bank.”

In fact, the researchers concluded that this procedure for sharing entanglement could potentially accommodate an infinite number of successive pairs of researchers unable to create their own entangled states. Ujjwal Sen expressed that this revelation was surprising, as they had not anticipated the ability to share entanglement across so many pairs when they commenced their calculations.

Moreover, the team pinpointed how the experimenters would need to modify their operations on the particles to facilitate this sharing mechanism, although these specific methods have yet to undergo experimental validation.

Chirag Srivastava from the Harish-Chandra Research Institute added that each new experimenter obtaining entanglement from Alice and Bob would acquire a diminishing share, as some entanglement dissipates during interactions.

Consequently, while the sharing methodology could theoretically continue forever, in practice, it would sooner or later cease when some researchers receive insignificantly small portions of entanglement.

How this situation unfolds—and how it measures against other methods by which researchers can obtain entanglement from a single source—remains to be explored through ongoing experiments.

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Immobilized Lifestyle Changes Are the Most Common Approach to Combat Cognitive Decline

Regular exercise aids in maintaining cognitive sharpness

Yoshikazu Tsuno/AFP via Getty Images

Engaging in structured exercise programs, dietary changes, cognitive activities, and social interactions has proven more efficient in combating cognitive decline than casual, self-initiated efforts.

The brain’s capabilities for memory, language use, and problem-solving typically diminish with age, often resulting in dementia. Nevertheless, studies indicate that up to 45% of global dementia cases are preventable by addressing 14 risk factors, which include inadequate education, social isolation, and brain injuries.

To explore strategies for preventing cognitive decline, Laura Baker from Wake Forest University School of Medicine in North Carolina and her team studied the American Pointer Study.

They involved over 2,100 individuals deemed at high risk for cognitive decline aged between 60 and 79, who led sedentary lifestyles, had suboptimal diets, and met at least two criteria related to dementia, such as a family history of memory issues.

Participants were randomly placed into one of two groups. Both were designed to promote physical and cognitive activity, healthy eating habits, and social interaction, although their methods varied.

One group followed a highly structured format, with 38 small group sessions across two years, led by trained facilitators who devised plans. This regimen also incorporated regular exercise at a community center along with weekly online brain training exercises.

The other group was less structured, participating in only six group meetings over the same two-year period. They were provided with public education materials and $75 gift cards aimed at encouraging behavioral changes, like attending gym classes.

After two years, both groups demonstrated enhancements in cognitive assessments measuring memory, executive function, and processing speed. The structured group saw an improvement of 0.24 standard deviations per year compared to their initial scores, while the self-guided group improved by 0.21 standard deviations per year.

“It’s remarkable that the structured care group has shown improvement,” remarks Gil Livingston from University College London. However, she points out the absence of a control group that received no intervention, making comparisons challenging between structured and self-directed participants.

Baker estimates significant declines in cognitive scores would have occurred without either regimen, claiming the benefits are significant. “A two-year structured intervention can effectively delay cognitive aging by nearly one to two years,” she states.

Baker mentions that improvement in both groups aligns with a placebo effect, suggesting that participants might have expected positive outcomes regardless of their group assignments.

Claudia Sumoto from the University of São Paulo in Brazil suggests the minor differences in cognitive scores between groups are likely imperceptible to participants and their families, given that dementia progresses gradually; clear effects may take more than two years to manifest.

Baker notes the team will continue monitoring participants for a total of six years, as the US Pointer Study has a four-year extension. “We’re observing subtle changes because they are cognitively normal individuals, and we are effectively slowing the rate of decline over time. We’re genuinely excited about empowering individuals at risk of dementia to take control of their health,” she remarks.

She believes that a structured approach is practical beyond the study context, emphasizing the need for caregivers and health professionals to motivate individuals rather than assuming high public expenditure is necessary to instill healthy habits.

“Overall, dementia care can be highly costly, and mitigating the burden can save expenses,” Livingston adds. “This study is crucial because lifestyle enhancements have shown benefits, and while guided support aids improvement, it’s not the only approach.”

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Puppies and Cheetahs: An Unlikely Sibling-in-Law Pair

https://www.youtube.com/watch?v=svke-k2h9ve

A charming duo, Rozi the Cheetah Cub and Ziggy the Labrador-Kelpie-Collie mix, demonstrate that the bonds of brotherhood can cross species lines.

Logi was brought into the world via an emergency cesarean section in late February at the Western Plains Zoo in Dubbo, Australia, after her mother, Siri, went into labor ahead of schedule.

Unfortunately, Siri was unable to produce milk. Rozi struggled with health issues during her initial weeks, which necessitated the separation of mother and cub.

As Rozi’s two siblings were stillborn, she became the only surviving cub, facing at least 18 months before she could participate in the zoo’s breeding program.

The zookeepers determined that in order for Rozi to grow and socialize adequately, thus improving her chances of breeding in the future, she would need companions.

Ten years prior, Logi’s mother had a dog for companionship, along with a puppy. This created a successful dynamic with the American Cheetah Cubs, according to Jordan Michelmore, Cheetah Keeper at Dubbo Zoo.

Domestic cats wouldn’t be suitable, she notes, as Logi’s playmates need to be sturdy enough to engage with a cheetah for at least a year.

“Dogs possess greater resilience and energy. Their size also aligns more closely with the cheetah as she matures,” Michelle adds.

3 Months of Ziggy and Logi

Sharon McDreddie

When both were about two months old, Ziggy and Logi were gradually introduced. Initially, Ziggy needed careful quarantine and vaccination, but after two weeks, they were playing and cuddling together.

“Their energy levels, play styles, and sizes complement each other well,” says Michelmore. “The liveliness and playfulness of puppies mesh nicely with Logi’s current stage.”

As female cheetahs tend to become solitary after 12-18 months, Michelmore anticipates a future separation for Ziggy, which will involve placing him in a new home.

“We will take cues from their relationship and can start to transition Ziggy out when Logi shows she doesn’t desire his company as much,” shares Michelle.

However, she is also considering the possibility of keeping Ziggy around. This way, Rozi and Ziggy could maintain their bond. Several zoos in the United States have found that cheetahs and their adopted siblings can coexist into adulthood.

She likens Ziggy to a “nuisance brother,” stating, “The joy she expresses upon his return to her space is unmistakable.”

“I also want Ziggy to grow into a well-rounded dog. His upbringing is truly unique for a puppy.”

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How to Locate This Month’s Delta Aquarid Meteor Shower

John Chumack/Science Photo Library

One of my favorite pastimes is stargazing with friends, spending hours watching the stars and hoping for meteors to race across the sky. Summer nights in the Northern Hemisphere are ideal for this, especially as two meteor showers reach their peaks.

A meteor is simply a flash of light created when small dust particles burn up as they enter Earth’s atmosphere. Occasionally, larger rocks disintegrate, with some pieces reaching the ground as meteorites. Each year, as Earth orbits the Sun, it passes through trails of dust and debris left by comets and asteroids, leading to stunning meteor showers.

The Delta Aquariids Meteor Shower originates from Comet 96P/Machholz, a short-period comet that orbits the Sun approximately every five years. Discovered in 1986, it last made its closest approach to the Sun in 2023.

This meteor shower is considered medium strength. On clear, dark nights, you could witness up to 20 meteors per hour, peaking on July 30th. However, the Delta Aquariid Shower (depicted in the image) spans from mid-July to mid-August and offers a gentler display compared to other meteor showers, making it less critical to observe it at peak times.

While Delta Aquariids are typically more spectacular in the Southern Hemisphere, they’re visible worldwide.

The optimal time to observe them is during a moonless night around the end of July. This year, the lunar phase aligns perfectly with the new moon on July 24th, offering an excellent opportunity for viewing until the first quarter on July 31st.

To see the meteors, find a location as far from light pollution as possible. Allow your eyes to adjust to the darkness for at least 40 minutes before gazing upward. The Delta Aquariids appear to radiate from the constellation Aquarius, from which their name is derived, but these meteors can be seen traversing in all directions across the sky.

If you’re stargazing towards late July or August, keep an eye out for the Perseid meteor showers, which are known for their brilliance and peak around August 12th. This year, the Perseids will reach their peak the evening of August 12th-13th, making it worthwhile to stay up late if you can.

So gather your friends, grab a cozy blanket or a hot water bottle, and see how many meteors you can spot at the end of July or the beginning of August. I’m certainly planning to do so.

Abigail Beall is the editor of New Scientist and the author of Art of Urban Astronomy. Follow her @abbybeall

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The Indicators of Alien Life on Exoplanet K2-18b Have Nearly Vanished

Artistic Depictions of K2-18b

A. Smith/N. Mandhusudhan

Hope for discovering alien life on K2-18B is diminishing. Recent observations have not revealed clear evidence of biomolecules suggested by earlier studies. While many scientists concur that this casts doubt on past claims, one researcher involved in those earlier findings argues that the new data may actually bolster their conclusions.

In April, Nick Madhusudan at Cambridge University and his team proposed that K2-18B, a rocky planet larger than Earth and located around 124 light years away, shows signs of atmospheric molecules dimethyldimethylsulfide (DMS) and dimethyldisulfide (DMD). On Earth, these compounds are exclusively produced by living organisms. At the time, Madhusudhan described these as “the first hints we see about this alien world, possibly a home for life.”

However, subsequent analyses of the same JWST data by other researchers using different statistical methods found no substantial evidence for these molecules. Madhusudhan later stated that his team conducted a more in-depth reanalysis of their data. In an interview with New Scientist, he expressed “increased confidence” that DMS could be the best explanation for the findings. Without further observations of K2-18B, astronomers remain divided on the potential for life on the planet.

Recently, Renyu Hu from Caltech and his colleagues collaborated with Madhusudhan’s team to examine new JWST observations of K2-18B. They found no statistical evidence supporting the detection of DMS. “This paper does not present conclusive evidence regarding the presence of this molecule in the atmosphere,” remarked Hu.

Madhusudhan, Hu, and their teams utilized JWST’s near-infrared camera to observe the light from K2-18B’s star. This camera captured light at wavelengths differing from the mid-infrared measurements used in the earlier analysis conducted in April. The researchers then assessed their findings using various atmospheric models for K2-18B. Each model had different assumptions regarding the molecular composition and the presence of water vapor in its atmosphere.

Some models incorporating DMS provided slightly better explanations for the data than those without, but this does not necessarily indicate a firm detection, falling short of the threshold for statistical evidence. “The models suggest that if there is a signal, it is quite weak,” stated Hu. “I remain cautious.”

Madhusudhan acknowledged the lack of strong evidence for detection, but contended that it is more reasonable to compare this data with recent observations from JWST’s near-infrared cameras taken in 2023, as opposed to April’s mid-infrared results. “Statistically, the data does seem to show slightly stronger evidence for DMS than what we discussed in our paper,” said Madhusudhan.

“There could still be other molecules mimicking DMS,” he added, but he believes that signals produced by unknown compounds exhibit specific traits best accounted for by DMS. “However, we cannot make confident assertions.”

“This study clearly states that there is no evidence of dimethyl sulfide. No statistical support exists for these gases,” stated Lewis Wellbanks of Arizona State University. Sarah Seager from MIT remarked that her team views the statistical significance presented by the researchers as “not enough to be considered a detection.”

“It seems we may be nearing the end of the discussion regarding whether DMS can be detected at viable levels. [K2-18b] conditions are not conducive enough for more critical detection,” remarked Jake Taylor from Oxford University.

In a further setback for biosignature proponents, Hu and his team discovered that specific hydrogen-rich atmospheres in planets like K2-18b can generate DMS through chemical pathways devoid of biological influence. “This helps narrow down which molecules may serve as biosignatures in exoplanetary atmospheres, implying that DMS is not exclusively indicative of life,” noted Taylor.

However, he emphasized that additional mid-infrared observations with JWST, akin to those undertaken in April, could yield more specific data, as DMS characteristics and other intricate molecules target distinct light regions that are detectable.

What is widely accepted by astronomers is that K2-18B is rich in water. Hu and his team have gathered robust evidence for the existence of methane and carbon dioxide, suggesting the presence of water. However, it remains unclear whether this water exists as oceans, atmospheric vapor, or is confined inside the planet.

World Capital of Astronomy: Chile

Discover the astronomical wonders of Chile. Explore some of the world’s most advanced observatories and gaze at the stars beneath some of the clearest skies on Earth.

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Source: www.newscientist.com

The Expansive Bubbles Surrounding the Dying Star Defy Comprehension

Gas bubbles surrounding red supergiant DFK 52

Alma/Mark Siebert et al. 2025

A dying star is shedding a massive sphere of dust and gas approximately half the size of our solar system. Astronomers are puzzled by this phenomenon as there’s no known process capable of producing such an extensive amount of material from a single star.

Red supergiants are the universe’s largest stars, representing the final stages of a massive star that has exhausted most of its fuel before it eventually goes supernova. During this brief phase, the star expands rapidly, releasing copious amounts of gas and dust and forming bubbles around it.

Mark Siebert from the Chalmers Institute of Technology in Sweden and his colleagues found that the red supergiant star DFK 52 possesses the largest known environment for such celestial bodies, creating a bubble 50,000 times wider than the distance between Earth and the Sun. Curiously, these stars are relatively dim, suggesting they have less energy than what would typically be needed to generate such a vast debris field. “I can’t ascertain how I can disperse so much material in that timeframe,” Siebert remarks.

Previously, DFK 52 had been observed by various telescopes, allowing astronomers to conclude that it expelled a normal quantity of gas. However, when Siebert and his team used the Atacama Large Millimeter Array (ALMA) in Chile, they detected light at longer wavelengths from older, much cooler materials.

“It reveals an extensive environment around DFK 52 with a very complex geometry that’s not entirely understood yet,” Siebert explains. “We don’t grasp the precise structure, but we acknowledge its immense scale.”

Similar to the intricate flow of bubbles throughout the structure, Siebert and his team observed ring-like formations at the core of the overall sphere, expanding at approximately 30 kilometers per second. They estimate that this activity likely stemmed from a significant event that occurred around 4,000 years ago, potentially key to understanding how the star generated so much material.

Location of DFK 52 observed by the Spitzer Space Telescope

NASA/JPL-CALTECH/IPAC

A potential explanation for the extensive environment is that these stars may have briefly increased in brightness and then dramatically faded, although red supergiants are not typically known for such fluctuations, according to Siebert. Alternatively, another star may be orbiting a larger star, stripping material from DFK 52, but this would likely result in a more symmetrical bubble, Siebert asserts. “It is evident that some additional energy sources must contribute to this phenomenon, but we remain uncertain about what they are,” he comments.

“The explosion won’t alter the star’s overall evolution, but it may significantly influence the future appearances of supernovas,” says Emma Beads from John Moores University, Liverpool, UK. “This is an intriguing development that enhances our understanding of unusual supernovae.”

World Capital of Astronomy: Chile

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Intermediate-Mass Black Hole Devours Stars in NGC 6099

Researchers have identified a newly found intermediate mass black hole designated NGC 6099 HLX-1, situated in a dense star cluster at the edge of the elliptical galaxy NGC 6099, nearly 40,000 light-years from the galaxy’s core.

X-ray and infrared imagery of NGC 6099 HLX-1. Image credits: NASA/CXC/Inst. Astronomy, Taiwan / YC Chang / ESA / STSCI / HST / J. Depasquale.

NGC 6099 is roughly 450 million light-years distant from the constellation Hercules.

Astronomers first detected an unusual X-ray source in a photo of the galaxy captured by NASA’s Chandra X-Ray Observatory in 2009.

This source has since been studied further with ESA’s XMM-Newton Space Observatory.

“X-ray sources exhibiting such high luminosity are uncommon outside a galaxy’s nucleus and can be significant indicators for locating elusive central black holes,” states Dr. Yi-chi Chang, an astronomer at the National Tsing Hua University.

“These objects bridge a critical gap in the understanding of black holes, linking stellar mass black holes and supermassive black holes.”

The X-ray emissions from NGC 6099 HLX-1 reach a temperature of 3 million degrees, which aligns with events of tidal disruption.

Utilizing the NASA/ESA Hubble Space Telescope, astronomers discovered signs of a small cluster of stars encircling the black hole.

This cluster feasts on matter as the stars are densely grouped, just a few months away (approximately 500 billion miles).

The intriguing intermediate mass black hole peaked in brightness in 2012, after which its luminosity steadily decreased until 2023.

However, the optical and X-ray observations across this timeframe do not align, complicating interpretation.

The black hole may have disrupted captured stars, creating a plasma disk that exhibits variability, or it might have birthed a disk that flickers as gas spirals inward.

“If an intermediate mass black hole is consuming a star, how long does it take to digest the gas?” questions Dr. Roberto Soria, an astronomer from the National Institute of Astrophysics in Italy.

“In 2009, HLX-1 was relatively bright. By 2012, it was approximately 100 times brighter, but then its brightness declined again.”

. “Now, we need to observe and see if it enters multiple cycles and identify any peaks in activity.

The researchers stress the importance of examining central mass black holes to reveal the origins of larger supermassive black holes.

Two alternative theories are suggested. One posits that large galaxies grow by merging with other substantial galaxies, positioning intermediate mass black holes as components that help formulate even larger black holes. Intermediate mass black holes in galactic centers also expand during these collisions.

Hubble’s observations indicated a correlation: the larger the galaxy, the larger the black holes residing within. One fresh insight from this discovery suggests that galaxies may host intermediate mass black holes, existing within the halos of galaxies without necessarily spiraling toward the center.

Another theory suggests that gas clouds in primordial dark matter halos might collapse directly into supermassive black holes without first forming stars.

Observations indicating Webb’s distant black holes often appear disproportionately large compared to their host galaxies lend support to this hypothesis.

However, since smaller sizes are elusive, there may exist an observational bias toward detecting very large black holes in the early universe.

In truth, there’s considerable diversity in the methods by which black holes are generated in our dynamic universe.

Ultra-massive black holes collapsing within dark matter may evolve distinctly from those within dwarf galaxies, where accretion could be the primary growth mechanism.

“If fortune favors you, you might spot a wandering black hole suddenly brightening in X-rays due to a tidal disruption event,” Dr. Soria remarked.

“Conducting statistical studies will elucidate the frequency of these intermediate mass black holes, how often they consume stars, and the mechanisms by which galaxies have expanded through the amalgamation of smaller galaxies.”

Survey findings were published in the Astrophysical Journal.

____

Yi-chi Chang et al. 2025. Multi-wavelength studies of high-light X-ray sources near NGC6099: A powerful IMBH candidate. APJ 983, 109; doi:10.3847/1538-4357/adbbee

Source: www.sci.news

After Years of Speculation, Science May Have Discovered a Genuine Hangover Remedy

Scientists don’t need reminding that hangovers are unpleasant. Excessive alcohol intake can trigger a cascade of headaches, nausea, fatigue, and inflammation.

While the long-term health hazards of alcohol consumption are well-known, it’s surprising that research on hangovers is quite limited.

“When I searched for ‘hangovers’, I found about 600 articles since 1945,” notes Professor J Leigh Leasure, who maintains a database of biomedical and lifestyle research. “It’s astonishing how little has been explored on this topic.”

Leasure, a neuroscientist at the University of Houston studying the effects of alcohol, is among the researchers striving to enhance our understanding of this unclear condition.

As a participant, she has experimented with various hangover remedies—from traditional eggs and bacon to electrolytes, vitamin mixes, and caffeine infusions.

High-Intensity Exercise to Sweat Out Hangovers

Meanwhile, some individuals tackle their hangovers through high-intensity workouts. Whether it’s a run or a spin and kettlebell class, the goal remains the same: to sweat out the “toxins” from the previous night.

“Interestingly, many people swear by sweating it out,” says Leasure.

In 2024, she and her colleagues released their first study examining whether exercise can alleviate hangover symptoms. Published in the journal Addictive Behavior, the research involved approximately 1,600 university students who had experienced at least one hangover in the past three months.

Participants completed a survey regarding their alcohol consumption, activity levels, and the frequency and severity of hangovers.

Some findings were unsurprising: increased drinking correlated with more severe hangovers.

However, the study also revealed that students who engaged in intense exercise during the previous three months reported fewer and less severe hangovers compared to those who were less active.

It’s worth mentioning that this was a retrospective study. The students were not tested in a controlled setting, so the results should be viewed with some caution.

This study suggests that vigorous exercise might generally mitigate the worst hangover effects, rather than alleviating them in the immediate aftermath.

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Reduced Inflammation from Elevated Endorphins

There’s reason to believe that training after a hangover can be beneficial. Endorphins released by rigorous exercise act as natural painkillers, which could help alleviate headaches.

One study indicates that high-intensity exercise is particularly effective at boosting endorphin production compared to lighter workouts.

Leasure posits that exercise may also have anti-inflammatory properties.

“One prevailing idea is that alcohol, especially in large amounts, elevates short-term inflammation, while exercise tends to counteract this,” she explains.

Research has shown that regular exercise can reduce the likelihood of chronic inflammation. In 2023, Harvard Research identified one mechanism involving the release of regulatory T cells that modulate the body’s inflammatory response.

Earlier studies suggest that moderate exercise for just 20 minutes can trigger an anti-inflammatory response.

However, don’t expect to break personal records on your morning run. While exercise can help with hangovers, the hangover itself can impair performance, says Leasure.

“As one might expect, hangovers don’t improve athletic performance. Research indicates they make physical activity more challenging.”

One significant idea is that alcohol increases inflammation, while exercise has the opposite effect – Illustrated Credit: Jamie Coe

Another unexpected finding emerged from Leasure’s study.

“There is a substantial body of literature examining the connection between exercise and alcohol consumption,” she states. “Physically active individuals tend to drink, which seems somewhat paradoxical.”

One theory from Leasure and her colleagues suggests that people often have a debit and credit mindset regarding health. Engaging in unhealthy habits like drinking might lead some to compensate by pursuing healthier activities, such as an intense workout on a Sunday morning.

As this study continues, the effects on hangovers will become clearer.

About Our Experts

Professor J Leigh Leasure is a neuroscientist and associate professor in the Department of Biology and Biochemistry, focusing on the effects of alcohol at the University of Houston in the United States. She has published in multiple scientific journals including Alcohol, Neuroplasticity, and Alcoholism: Clinical and Experimental Research.

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Source: www.sciencefocus.com

This Cat-Related Parasite Might Be Influencing Your Poor Choices: Here’s How

Parasites transmitted by cats may influence the behavior of nearly half of the global population, leading to riskier behaviors and increased aggression.

A recent review article aggregated various studies to emphasize the significance of considering both mental health and the physical consequences of parasite infections.

Reviews published in Frontiers of Psychiatry focus on the most prevalent parasitic infections affecting humans, particularly Toxoplasma gondii.

These parasites can enhance the production of dopamine, a hormone associated with feelings of pleasure, in the brain.

While increased dopamine may seem beneficial, it actually promotes detrimental behaviors, resulting in poor impulse control, heightened aggression, and an increase in risky sexual practices.

“The societal implications of these findings are significant,” the study notes. “The potential for behavioral modifications due to widespread infections of parasites like T. gondii highlights that such infectious diseases can lead to psychological and social challenges in addition to medical ones.”

“Particularly, the likelihood that these infections can intensify aggressive and impulsive behaviors raises vital considerations for understanding and preventing violence and behavioral disorders.”

It is estimated that 30-60% of the global population may be infected with T. gondii, though rates in the U.S. are significantly lower, around 10%.

Most healthy adults do not exhibit obvious physical symptoms, resulting in many infections going unnoticed.

The ultimate target for T. gondii – the cat’s digestive system. Image source: Getty Images/Artmarie

Cats are primary hosts for these parasites as they reproduce within the cat’s digestive system, forming egg-like structures known as oocysts.

Once cats excrete waste, these oocysts can contaminate the environment, infiltrating soil, water, and vegetation. Other animals, including the prey of cats like birds and rodents, may ingest them.

In a bid to return to a cat’s digestive tract, T. gondii has adapted to manipulate the brain chemistry of these prey species, making them less likely to escape and more likely to be consumed.

Humans primarily contract T. gondii through handling cat feces or consuming undercooked foods. Fortunately, there are simple measures to reduce the risk of infection.

  • Thoroughly wash your hands, knives, and cutting boards after handling raw food, especially meat.
  • Ensure that lamb, pork, venison, and other meats are cooked thoroughly.
  • Thoroughly rinse fruits and vegetables under running water.
  • Avoid unpasteurized milk and dairy products, especially goat milk.
  • Wear gloves while gardening.
  • Exercise caution and wash hands after cleaning the cat’s litter box.

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Source: www.sciencefocus.com

How Drought and Rising Sea Levels Influence One Another

Recent studies indicate that elevated temperatures have led to increased groundwater infiltration, exacerbating drought conditions and accelerating evaporation, thereby significantly decreasing the availability of freshwater.

The concept of “continental aridity” reallocates oceanic water to an extent, outpacing the melting of ice sheets as the primary factor contributing to global sea level rise, according to the research.

Loss of land water can severely affect access to safe drinking water and the ability to cultivate crops in some of the most fertile agricultural areas worldwide.

“We consume a significant amount of water for food production,” stated Jay Famiglietti, a professor at Arizona State University’s School of Sustainability and one of the study’s authors. “If conditions remain unaltered, we anticipate that this will influence food security and overall water availability.”

The findings should be viewed as a primary concern by the public, resource managers, and global decision-makers, the researchers asserted. Research indicates that the identified trends convey a profoundly concerning message regarding the past effects of climate change.

“The continent is becoming drier, freshwater sustainability is diminishing, and the pace of sea level rise is accelerating,” the authors noted.

Published on Friday in the Advances in Journal Science, the study examines shifts in terrestrial water sources, including lakes, subterranean aquifers, and soil moisture over the last two decades. The researchers discovered that various elements, notably climate change, are disrupting Earth’s natural water cycle and complicating its flow between land, oceans, and the atmosphere.

Utilizing data from four NASA satellite suites, researchers analyzed terrestrial water storage modifications over the past 22 years. The satellites are specifically designed to monitor Earth’s water movement, including variations in ice sheets, glaciers, and underground reserves.

For instance, researchers found that arid regions of the world have been rapidly drying since 2014, with these drought-impacted areas expanding annually by regions twice the size of California.

In certain instances, areas experiencing drought have grown into large interconnected “megadry” spaces, as indicated by the research. One such vicinity encompasses Central America, Mexico, California, the southwestern United States, the lower Colorado River basin, and segments of the Southern Plateau.

“The essential takeaway here is that water is indeed a crucial factor influencing changes observed on both land and at sea,” remarked Benjamin Hamlington, a research scientist at NASA’s Jet Propulsion Laboratory, who was part of the science team facilitating decades of data used in this new investigation.

The study revealed that all major land masses, except Greenland and Antarctica, have witnessed unprecedented dryness since 2002.

This widespread continental aridity is anticipated to have significant ramifications for humanity, with researchers noting that three-quarters of the global population resides in nations where freshwater resources are diminishing.

Simultaneously, rising oceans threaten coastal areas globally, decreasing habitability and increasing vulnerabilities to extreme storms and flooding. In the U.S., severe weather has contributed to insurance crises in coastal cities prone to these extreme events.

The correlation between sea level rise and the depletion of groundwater is a consequence of disrupting the planet’s water cycle. Many of these changes, such as excessive groundwater extraction, are regarded as permanent and could remain irreversible for millennia, according to Alexander Sims, a professor in the Department of Earth Sciences at the University of California, Santa Barbara.

“When water is extracted from the land, the only viable destination is the ocean,” he explained. “This water then enters the atmosphere, with 88% eventually returning as precipitation on Earth, leading back to the ocean.”

Sims acknowledged that while the study is significant for estimating the global scale of water losses, he harbors doubts about the assertion that these continental water losses outweigh ice sheet melting as the primary contributor to sea level rise.

However, Hamlington emphasized that this study illustrates how the movement of water around the Earth generates substantial ripple effects. It also suggests that further groundwater depletion could diminish freshwater supplies further and exacerbate drought conditions, with implications for the future.

“Monitoring terrestrial water storage is a crucial piece of the puzzle,” he added. “Understanding where that water is moving will aid us in predicting future droughts, floods, and the availability of water resources.”

Source: www.nbcnews.com

We are facing unparalleled freshwater depletion worldwide.

Here’s a rewritten version while preserving the HTML structure:

Global freshwater resources are dwindling

Intensive extraction, evaporation, and groundwater loss driven by increasing temperatures are causing freshwater to flow from continents into oceans. This poses a significant risk to water supply for a large portion of the global population and contributes to rising sea levels.

Jay Famiglietty from Arizona State University and his team utilized satellite gravity measurements to assess changes in the total volume of water stored on land. This encompasses all types of freshwater, including rivers, underground aquifers, glaciers, and ice sheets.

Their findings reveal an unexpected reduction in freshwater resources across many regions worldwide from 2002 to 2024. Surprisingly, even arid areas are not experiencing increased dryness; the anticipated effects of climate change are extending over 800,000 square kilometers annually.

The researchers pinpointed four major “mega-dry” zones where distinct areas of freshwater depletion converge, leading to widespread aridification. These regions include Northern Canada and Russia, where losses are exacerbated by glacier retreat, thawing permafrost, and diminished snowfall.

In the remaining two regions, groundwater depletion resulting from agriculture is the primary cause of water loss. These areas, which cover much of the Southwestern U.S. and Central America, extend from Western Europe and North Africa to northern India and China. Groundwater depletion is worsened by heat and drought, compelling increased water extraction, which accounts for 68% of the total decline in water reserves.

This extensive water redistribution has become a significant contributor to sea level rise, adding nearly a millimeter to ocean levels each year since 2015, with terrestrial water losses outpacing those from Antarctic and Greenland ice melt.

According to the researchers, these patterns “likely convey a troubling message regarding the earlier effects of climate change.” They argue that “the continent is drying, freshwater resources are diminishing, and sea level rise is accelerating.”

While previous studies have identified these arid trends in specific areas, Manoochehr Shirzaei of Virginia Tech emphasizes that the strength of this research lies in its global perspective. “We’re not generating or losing water; we’re merely redistributing it. Unfortunately, this redistribution isn’t favoring the right areas,” he notes.

“The next step involves conducting a thorough analysis to isolate the factors driving groundwater depletion,” adds Benjamin Cook from Columbia University in New York. “It’s necessary to clarify the distinctions between the narratives of climate change and groundwater depletion.”

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Source: www.newscientist.com

A Toxic Social Connection May Be Accelerating Your Aging

The individuals we associate with may influence our health

Rob Wilkinson/Alamy

Many people in our lives may evoke anxiety instead of happiness. Interestingly, these individuals can actually accelerate the aging process.

Psychologists have long understood that robust social connections can enhance our longevity. A study indicates that social isolation may impact mortality rates as much as obesity and inactivity.

Moreover, the quality of our relationships holds equal significance to their quantity. Research from the University of Utah in 2012 revealed that tumultuous relationships—those marked by intense highs and lows—can accelerate telomere shortening, a protective cap on chromosomes. This shortening is a natural part of aging and is linked to health issues like heart disease.

Recently, Byungkyu Lee from New York University and his team explored a more precise measure of aging, investigating how negative social connections influence small chemical changes in DNA known as methylation marks. These changes illustrate how behavior and environment can alter gene function through epigenetics. “As we age, the patterns of these marks change in predictable ways,” states Lee.

The researchers collected saliva samples for epigenetic analysis from 2,232 individuals, who described their relationships with significant members of their social circles and indicated their experiences on a scale of “Never,” “Rarely,” “Sometimes,” or “Frequently.”

Interestingly, many participants labeled these negative influences as “hustlers.” “Over half of adults report having at least one hustler among their close contacts,” notes Lee.

These people seem to have a considerable effect on an individual’s epigenetic markers, with each hustler linked to approximately a 0.5% increase in biological aging, suggesting that individuals with hustlers in their lives tend to have a biological age that is older than their chronological age.

Negative social ties can induce chronic stress responses, and Lee’s team observed elevated markers in those relationships, leading to immune system damage.

“The biological ramifications of a significant number of hustlers in one’s social network are certainly comparable to the differences seen between smokers and non-smokers,” Lee asserts.

This effect was notably pronounced among hustlers who, paradoxically, provided some form of social support. “The same person who comforts you today may criticize you tomorrow, effectively branding you as bad and causing more physiological harm than a relationship that could potentially offer more stability,” explains Lee.

Alex Haslam from the University of Queensland remarked that the findings “align with other studies exploring these dynamics and underscore the importance of social relationships in relation to health.”

He further suggested that the overall sentiment within a group may influence aging even more than specific individual relationships. “For instance, being part of a book club or a choir may mean that it’s my connection to the entire group that plays a role in my health.”

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Source: www.newscientist.com

A Solar-Powered Drone Larger than a Jumbo Jet Can Stay Airborne for Months

Skydweller drone

Skydweller

A solar-powered surveillance drone boasting a wingspan larger than that of the Boeing 747 is capable of flying continuously for weeks or even months, as claimed by its operators. A test flight is currently underway off the US Gulf Coast this month.

Run by the US-Spanish venture Skydweller Aero, the Skydweller drone features a 72-meter wingspan, surpassing the width of most commercial jets. Weighing approximately 2,500 kilograms—similar to a Ford F-150 truck—this drone aims to achieve the first solar-powered flight globally, which was targeted for 2016, with a mission to carry out “pure targeted flights” over 13 kilometers during daylight, while aspiring towards building a “comparable solar-powered carbon fiber drone.”

The Skydweller drone executed the world’s inaugural autonomous solar-powered flight in April 2024, with several subsequent test flights conducted throughout the year. Military funding evaluations are focusing on the viability of marine drone patrols. Military funding is assessing the feasibility of marine drone patrols.

Most recently, the solar-powered drone accomplished its longest flight after departing from Stennis International Airport in Mississippi on July 20. According to the Flightradar24 Flight Tracking Service, it remained aloft over the Gulf Coast for more than three days, landing on July 23. The service also indicated that, on July 14, the drone had flown for over 18 hours.

The wingspan of the Skydweller drone is nearly double that of major surveillance drones, such as the Northrop Grumman RQ-4 Global Hawk used by the US Air Force. Its payload capacity of 400 kilograms significantly surpasses the lifting capabilities of most solar drones. Recently, the French aerospace company Thales contributed to the development of the Skydweller drone by equipping it with air surveillance radar. Equipment was provided for enhancing its capabilities.

However, experts suggest that the decades-long pursuit of commercializing solar drones has largely been marked by unmet promises and monumental failures. Arthur Holland Michele, a research partner at the Oslo Peace Institute, points out that both Google and Facebook attempted to create solar-powered drones for internet services but eventually discontinuing their initiatives. Aerospace manufacturer Airbus, too, has heavily invested in smaller Zephyr solar-electric drones, yet “we haven’t observed significant returns thus far,” states Michele.

“The military has funded solar drone demonstration flights for over ten years, and no one has yet acquired the technology,” Michele explains. “While solar drones are impressive and theoretically meaningful, their practical sustainability as a business case remains unclear.”

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Source: www.newscientist.com

Neanderthals Likely Resembled Maggots Rather Than Hypercarnivores.

The rotting meat maggot might have been vital to ancient diets

Chronicle/Alam

Neanderthals may not have been the exclusive meat-eaters we once presumed. Analysis of nitrogen isotope ratios in their bones suggests a diet predominantly consisting of meat. Yet, these ratios could also result from a more varied, omnivorous intake that involved significant consumption of maggots.

“Trout pieces are readily accessible, nutritious resources,” notes Melanie Beasley from Purdue University in Indiana.

Historical evidence indicates that maggots were eaten regularly across different societies, and she points out that some reindeer hunters today consider them a snack, intentionally cultivating specific maggot types. For instance, Casu Marzu, a cheese containing live maggots, is a Sardinian delicacy.

Nitrogen comprises two stable isotopes, nitrogen-14 and nitrogen-15. Lighter isotopes tend to be lost from organisms more readily than heavier ones, resulting in a higher nitrogen-15 to nitrogen-14 ratio as food progresses up the trophic levels.

By examining the isotopic ratios in collagen from fossilized bones, researchers gauge the dietary habits of carnivorous animals, which tend to exhibit higher ratios than herbivores. However, upon studying Neanderthal bones, researchers found unexpectedly high ratios, even surpassing those of lions and hyenas. “This led to the myth of Neanderthals as intense hunters of large game,” explains Beasley.

Nevertheless, many researchers challenge this theory. Notably, bones from early Homo sapiens exhibit similar nitrogen ratios. Moreover, these early humans could not survive on lean meat alone. “It’s physically impossible,” Beasley states. “You’d suffer from what early explorers termed ‘rabbit starvation.’”

The dilemma lies in the fact that an excessively protein-rich diet can overwhelm the body’s ability to eliminate harmful byproducts like ammonia.

Moreover, significant direct evidence from dental calculus studies confirms that Neanderthals also consumed plant matter. So why is their nitrogen-15 ratio so elevated?

In 2017, John Speth at the University of Michigan proposed that Neanderthals might have stored their meat and consumed it in a decomposed state. When meat rots, it releases gases such as ammonia, which should lead to an increased nitrogen-15 concentration.

At that time, Beasley sought to conduct research at the University of Tennessee’s Body Farm, where human decomposition studies help in forensic investigations. There, she observed maggots feeding on corpses.

With Speth and Julie Lesnik from Wayne State University in Michigan, Beasley discovered that while nitrogen isotopic ratios do rise as muscle tissue decays, the increase is more pronounced in various types of maggots feeding on decomposing bodies.

While these findings are preliminary, they suggest that a purely meat-centric diet may not fully account for the nitrogen isotopic ratios seen in Neanderthals and early Homo sapiens, claims Beasley. She theorizes that these ratios may result from a blend of factors, including meat storage, preparation, cooking, and maggot consumption.

“This is an exciting new study that could significantly enhance our understanding of the perplexing results that have arisen from isotopic studies of Neanderthals and other Stone Age hominins over the years,” asserts Herman Ponzer from Duke University in North Carolina.

“The evidence here is quite persuasive that the consumption of maggots and similar larvae could clarify the ‘hypercarnivore’ indicators noted in past fossil isotope investigations,” he affirms.

Furthermore, this research supports the notion that the so-called Paleolithic diet should encompass rotten meat and maggots, according to Beasley. “Anyone interested in historical accuracy should consider fermenting meat and accessing fly larvae.”

Neanderthals, Ancient Humans, Cave Art: France

Join new scientist Kate Douglas as she embarks on an intriguing journey through time, exploring significant Neanderthal and Upper Paleolithic sites across southern France, from Bordeaux to Montpellier.

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Source: www.newscientist.com

The Unexpected Role of Land, Not Ice, in Accelerating Sea Level Rise

The land on Earth is drying out quickly, contributing to sea level rise even more than melting glaciers, according to new research.

Researchers have discovered that water loss from soil, lakes, and underground aquifers accelerates the rise in sea levels. This trend of drying is spreading at an alarming rate.

Areas around the globe that are drying are merging into vast interconnected regions known as “megadry” zones. One such area now spans from the southwest coast of the US to Mexico.

Previously, dryness in certain regions was balanced by wetness in others. However, dry areas are now expanding at a faster pace than wet areas, covering an expanse that grows annually by an area twice the size of California.

At present, 101 countries are consistently losing freshwater, putting 75% of the world’s population (almost 6 billion people) at risk.

“In many locations where groundwater is being depleted, it will not be replenished within human timescales,” a recent study noted. Advances in science, “Safeguarding the global groundwater supply has become increasingly crucial in a warming world, especially in regions known to be drying.”

Utilizing satellite data gathered from 2002 to 2024, the research monitored water storage across Earth’s surface, in lakes, rivers, snow, soil, groundwater aquifers, and even plant life.

The findings indicate that human activities worsen the situation, while climate change also plays a significant role. As landscapes dry out, humans extract more water from sources such as underground aquifers.

These water reserves are not replenished at the same pace, which leads to an accelerated growth of dry areas and their eventual connection.

For instance, the study identified declining groundwater levels in California’s Central Valley and the Colorado River Basin, resulting in these arid regions merging with similar areas in Central America to create a massive dry zone.

Dryness is also encroaching upon previously wet regions like Canada and Russia. – Credit: Getty Images

“In certain areas such as California, the continuous overextraction of groundwater is threatening water and food security in ways that are not fully acknowledged globally,” the study asserts.

Moreover, they emphasize the urgent need for crucial decisions at both national and international levels to “preserve this vital resource for future generations.”

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Source: www.sciencefocus.com

Two Senior NOAA Officials Taking Leave Related to “Sharpiegate” Incident

This week, two officials from the National Oceanic and Atmospheric Administration (NOAA) involved in the infamous “Sharpiegate” investigation were placed on administrative leave.

NOAA’s assistant administrator, Stephen Volz, and Jeff Dillen, assistant hearing advisor, were confirmed to be on leave Thursday morning, as stated by Volz to NBC News.

Volz and Dillen became prominent figures during President Trump’s first term due to the “Sharpiegate” incident, where forecasters faced backlash for contradicting the president over alterations to a hurricane map.

NOAA confirmed on Friday that both individuals were on administrative leave.

“Dillen was placed on leave by a senior career lawyer in the department following recent performance reviews,” said NOAA Communications Director Kim Dester in an email. “Separately, Dr. Volz was put on leave for unrelated reasons.”

When reached by phone, Dillen opted not to comment.

This decision comes at a challenging time for NOAA, as recent staffing cuts and voluntary departures initiated by the Trump administration have affected hundreds of employees. The staffing and performance of the National Weather Service, a part of NOAA, have been under close scrutiny following severe weather events, including the devastating floods in central Texas.

Currently, NOAA lacks a permanent leader, as President Trump’s candidate, Neil Jacobs, awaits Senate confirmation. Furthermore, NOAA’s budget has faced intense examination, with the Trump administration proposing considerable cuts that Congress appears unwilling to enact.

Reports of Volz and Dillen’s administrative leave were first brought to light by CNN. The reasons behind their leave remain unclear.

In an interview, Volz mentioned he received a letter from NOAA administrator Laura Grimm on Thursday morning informing him of his leave.

“The letter provided no details on the cause, only stating I am on administrative leave due to an investigation into public conduct,” Volz quoted, adding that he is unaware of what the investigation entails.

He noted that part of his role includes public speaking and attending events, including a recent press conference for a satellite launch in Japan. With 36 years in public service, Volz stated he has not altered his media engagement strategy since the new administration took over.

“I have consistently made public comments and maintained transparency about the work we do,” he affirmed. “I’m vocal about our operations and how we handle challenging scenarios, likely more so than many others in similar roles at NOAA.”

Both Volz and Dillen were pivotal in the aftermath of the 2019 “Sharpiegate” incident, where Trump mistakenly asserted that Hurricane Dorian could strike Alabama. Local forecasters quickly refuted the claim, leading to Trump showcasing a hurricane map altered with a black Sharpie. Top NOAA officials then publicly criticized local forecasters, allegedly under political pressure.

Following the incident, NOAA enlisted the National Academy of Public Administration to conduct an independent evaluation of claims related to scientific misconduct during that time. The findings indicated that Jacobs violated NOAA’s ethical policies.

Volz authored the final decision regarding NOAA’s assessment aligning with the NAPA results, stating that Dillen also contributed to the document. Volz mentioned they both received notice of their leave on the same day but couldn’t confirm if it coincided with the “Sharpiegate” report.

“Jeff served as legal counsel while I was a senior employee reviewing the NAPA report, identifying negligence involving two staff members within NOAA,” Volz explained. “We both received administrative leave simultaneously, and Neil Jacobs is currently undergoing a hearing while awaiting Senate action.”

NOAA has not directly addressed whether the “Sharpiegate” investigation influenced their decision.

Volz mentioned he found himself locked out of his email and federal facilities.

He expressed uncertainty about his next steps.

“I am passionate about my work at NOAA,” Volz stated. “I’m not prepared to quietly step back from my duties. That is certainly the case.”

Source: www.nbcnews.com

Significant Carbon Sinks Could Be Gone for a Second Consecutive Year

The vegetation in Chapada das Mesas National Park, Brazil, struggles to capture atmospheric CO₂.

Pulsar Images/Alamy

A preliminary analysis has revealed that the extreme heat and rainfall of 2024—the hottest and wettest year recorded—now emits as much carbon dioxide as land ecosystems can mitigate. This marks the second consecutive year where land carbon sinks have nearly vanished due to climate stresses, potentially explaining the unprecedented surge in atmospheric CO₂ levels in 2024.

The implications of these findings are serious: land carbon sinks, which typically absorb billions of tons of CO₂ annually, are weakening more rapidly than anticipated, threatening our climate goals. However, it’s uncertain whether this trend over the past two years indicates a permanent shift.

“Everyone involved in this research was taken aback,” noted Guido van der Werf from Wageningen University, Netherlands. “We anticipated a minor sink, but the current situation reveals very few sinks exist.”

Land forests, grasslands, and other ecosystems work to absorb CO₂ from the atmosphere as they grow. However, when these ecosystems decay or burn, the stored carbon is released back into the atmosphere. Ideally, these processes should remain balanced. Yet, over the last fifty years, ecosystems have been absorbing more carbon than they are releasing, forming fluctuating carbon sinks.

This imbalance is thought to stem primarily from rising CO₂ levels benefiting plant growth, as well as other aspects like nutrient pollution and afforestation. Nonetheless, the effects of increased CO₂ are predicted to be finite as ecosystems may eventually lose their fertilization benefits. “We understand that land carbon sinks will decline, but the pace remains uncertain,” said van der Werf.

In 2023, researchers grew increasingly alarmed as land carbon sinks diminished significantly due to extreme wildfires, heat, and drought, all exacerbated by rising greenhouse gas levels and emerging El Niño patterns in the Pacific, which are generally linked to weakened sinks.

In 2024, it was expected that the carbon sink would strengthen with the decline of El Niño and fewer wildfires. Yet, international teams, including van der Werf, found that it remained incredibly weak.

To evaluate carbon cycling, researchers utilized satellite data to track land greenness corresponding to plant growth and compute the productivity of Earth’s terrestrial ecosystems. They then subtracted the CO₂ released through wildfires and decomposition, leveraging global atmospheric CO₂ measurements for their estimates.

The analysis revealed that the land carbon sink for 2024 was nearly nonexistent, with approximately 2.6 billion tonnes less than expected. This was less than the struggling sink observed between the 2015 and 2016 El Niño events, marking the worst land carbon sink in over a decade.

However, this weakening, unlike in 2023, was not predominantly driven by wildfires and drought. Instead, the study indicated an escalated rate of organic matter decomposition. While ecosystems did show increased productivity (with greenness reaching record highs), it was outpaced by a measure referred to as total ecosystem respiration, reflecting the overall CO₂ output.

“The substantial drop in land carbon sinks stems from respiration,” explained Guanyu Dong, from Nanjing University, who led the study. “The mechanisms at play are completely different.” While most regions have experienced a weakened sink, this trend is especially pronounced in tropical grasslands and shrublands, he added.

Van der Werf indicated that these figures are preliminary estimations and other research teams analyzing the carbon sink could yield varying results. Yet, this decline could largely elucidate the record spike in CO₂ concentrations witnessed in 2024, which is too substantial to be solely attributed to fossil fuel emissions.

The recurring disappearance of sinks for two consecutive years may foreshadow a more rapid decline than previously anticipated. “This suggests that a more pessimistic model might hold true,” noted van der Werf. Early losses in carbon sinks lead to faster increases in airborne CO₂ levels, potentially escalating temperatures even after emissions reach zero.

“That is certainly a possibility, and underscores the alarming nature of this phenomenon,” stated Scott Denning from Colorado State University, who was not involved in the research. He cautioned that the past two years could be aberrations, making it challenging to generalize about accelerated rates of decomposition. “One must interpret even these two years of data cautiously to avoid concluding it represents a permanent collapse,” he advised.

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Source: www.newscientist.com

The Dark History of Fictional Female Robots

2JD8W56 Alicia Vikander, Ex Machina, 2014,

Alex Garland’s 2015 film Ex Machina and Sierra Greer’s Annie Bot (featured below) uphold the long tradition of female robots

Maximum Film/Alamy

This year, the Arthur C. Clarke Award for the year’s best SF fiction novel was granted to Sierra Greer’s recent work, Annie Bot. Throughout the story, Annie, a sensuous sex robot designed to revere a self-centered owner, gradually cultivates a unique personality. Yet, she is not the first artificial woman to embark on this journey. The earliest fictional female robots were simple mechanical toys, yet over time they have evolved into complex beings akin to their human counterparts.

Artificial beings have a deep-rooted history across cultures. “Every society across the globe has crafted narratives about automata for centuries,” says Lisa Yaszek, a scholar at Georgia Tech. These stories generally fit into three categories; while most depict automated laborers or weaponry, the creations of female robots typically align with domestic and sexual themes. An instance from Greek mythology, Galatea, embodies the ideal woman who comes to life when her creator, Pygmalion, falls in love with her.

Historically, these fictional automata have often mirrored real inventions. Novelties that mimic living beings began to emerge. By the 18th century, technological advancements rendered these creations increasingly lifelike and beautiful. Therefore, it’s no surprise that imaginations conjured up automata indistinguishable from reality. One of the unsettling visions of this was Eta Hoffmann’s 1817 tale Sandman, where the beautiful Olympia captivates Nathaniel despite her unsettling rigidity. Learning that Olympia is merely a moving doll ultimately drives Nathaniel to madness and demise.

In the 19th century, artificial women were often relegated to similar roles. Real women were generally expected to provide domestic services for men. In 1886, in The Night Before the Future, Auguste Villiers imagined a contemporary Pygmalion who constructs a flawless mechanical woman, annoyed by the flaws of real women. Alice W. Fuller lampooned this idea in a 1895 short story, Wife Manufactured to Order. The protagonist abandons his opinionated girlfriend in favor of the machine, yet finds himself exasperated by the robot’s mindless adoration.

By 1972, Ira Levin questioned what fate would await real women if robots could assume their roles.

This vision of an absolutely compliant Galatea has persisted through decades of fiction. “The ideal is an extremely obedient, accommodating, available woman,” outlines My Fair Woman: Female Robots, Androids, and Other Artificial Beings.

When writers envisioned automata, societal anxieties increased during the Industrial Revolution, worrying that new machines could outpace human capabilities. Fiction like Samuel Butler’s 1872 novel Erewon hinted at machines evolving their own cognitive abilities. By the dawn of the 20th century, these concerns peaked with two significant works of fiction.

Playwright Karel Čapek’s 1920 work R.U.R. depicted a world striving to elevate all people to the upper echelons of society by delegating labor to synthetic beings he called “robots.” The term robota means serf or forced labor. As foreseen by Butler’s Erewon, the robots in R.U.R. eventually rise against their creators.

Shortly thereafter, Thea von Harbou released Metropolis, adapted into Fritz Lang’s groundbreaking 1927 film. In it, female robots are designed to resemble human women of the working class. While the human Maria advocates for unity and peace, her robotic counterpart incites chaos and destruction.

Ten years later, author Leicester Del Rey introduced Helen O’Loy, presenting a mechanical femme fatale in the form of the synthetic housewife Helen, who develops feelings akin to Robot Maria. In mid-century fiction, such bots often eclipsed more rebellious counterparts. The Twilight Zone featured another robotic wife, while the Jetsons boasted the reliable Rosie the Robot maid.

Yet, the illusion of domestic happiness proved fragile. By 1972, Ira Levin posed a chilling question on what would happen if robots replaced real women. In his novel The Stepford Wives, Joanna discovers that the men in her community are murdering their outspoken wives and substituting them with docile, mechanical replicas.

In subsequent decades, franchises like Terminator and The Matrix tackled fears surrounding the technological replacement of humans—a concern that had loomed since the Industrial Revolution. However, when roles lost to machines are domestic, not all women express discontent with this outsourcing. In Iain Reid’s 2018 novel Foe, a woman confronts her human husband and ultimately claims her position with a robotic replica.

Moreover, the 2010s introduced two influential artificial women. In the 2013 film Her, a man becomes infatuated with the AI named Samantha, leading to a strained relationship with a real woman. Meanwhile, 2014’s Ex Machina features an abuser who coerces his employee Caleb to evaluate the robot AVA. As Caleb develops affection for AVA, she skillfully manipulates him to secure her escape from her creator. Though neither Samantha nor AVA are malicious, they pursue their own interests, prompting questions about the implications for those around them.

Recent narratives increasingly spotlight the journeys of artificial women themselves. In Annie Bot, Annie narrates her own evolution, prioritizing her emotional growth over that of her owner. Greer illustrates that if the bot identifies as a woman, she deserves to forge her own path. A similar approach is evident in this year’s film Fellow, which focuses on the experiences of Iris, a sex robot, as she seeks autonomy—her journey towards liberation is more nuanced than Annie’s.

But what lies ahead for these artificial women (Samantha and AVA, Annie and Iris) if they assert their independence? Their future depends on the creativity of tomorrow’s writers.

Arts and Science of Writing Science Fiction

Engage in science fiction writing this weekend, focusing on the creation of new worlds and artistic expressions.

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Source: www.newscientist.com

Capturing a Woman’s Triumph on Her Journey to New Heights

Kyrgyzstan’s Ines Papert,

INES PAPERT

For many, the imposing 1,200-meter ice wall at the summit is quite daunting. However, for accomplished ice climber Ines Papert, it represented a thrilling opportunity to scale the peak of Kiziruskar, a remote mountain straddling the border between China and Kyrgyzstan. In 2016, she and fellow climber Luca Lindichi succeeded after three attempts to conquer this challenging ascent, subsequently becoming the first known individuals to navigate the steep routes they coined “Lost in China.”

Papert is among over a dozen female climbers celebrated in a daring expedition to tackle the world’s tallest peak. Climbing Women: Climbing History by Joanna Croston.

Elizabeth “Lizzy” Le Blonde

Martin and Osa Johnson Safari Museum in Chanute, Kansas

Another significant figure is Lizzy Le Blonde, who, in 1889, ascended a mountain in the Swiss Alps while wearing a full skirt (as shown above). Le Blonde, known for her remarkable achievement of guiding 20 individuals, played a key role in establishing the Ladies Alpine Club in 1907, an organization dedicated to supporting women climbers in a male-dominated field.

Lydia Brady on the first female ascent of Zenith at Half Dome, Yosemite National Park

Steve Monks

Croston’s work also highlights Lydia Brady, who achieved a series of significant first ascents in Yosemite National Park during the 1980s. As shown in the image above, she is seen on the famed face of Half Dome. In 1988, she made history as the first woman to summit Mount Everest without supplemental oxygen. The Tibetan designation for Everest is QOMOLANGMA, which translates to “Mother of the Goddess of the World.”

Climbing Women: Climbing History will be published in the UK on August 7th and internationally on September 16th.

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Source: www.newscientist.com

The Unique Galaxy Reveals Surprisingly Untouched Stars.

Abell 2744, Amore6 Discovered Galaxy Cluster

NASA, ESA, Jennifer Lotz, Matt Mountain, Anton M. Koekemoer, HFF Team (STScI)

In the vast expanse of the universe, galaxies that exhibit peculiar contours are surprisingly filled with ancient stars. This offers astronomers an initial peek into a unique type of stellar body that emerged soon after the universe’s inception.

Although the James Webb Space Telescope (JWST) has allowed scientists to revisit regions of the early universe, pinpointing the first stars remains elusive. These primordial stars, termed Population III stars, are primarily colossal hydrogen spheres believed to have formed in the universe’s infancy. As the very first stars, they left behind an environment largely devoid of heavier elements following their demise.

While there have been theories hinting at the existence of such stars, definitively proving their existence in the early universe has been challenging, as galaxies appeared to have become tainted with heavier elements merely a few hundred million years post-Big Bang.

Recently, Morihara Highlands from the California Institute of Technology and his team found a galaxy almost entirely composed of hydrogen, indicating the presence of Population III stars. However, this galaxy emerged later than expected, approximately a billion years after the universe began.

Dubbed Amore6, it was initially identified within the Abell 2744 galaxy cluster. Upon measuring the light from Amore6 using the JWST, Morishita and his colleagues noted the complete absence of common oxygen ions. This suggests that the galaxy harbors less than 0.2% of the oxygen present in our sun, indicating a lack of contamination by heavier elements.

As the universe evolves, the likelihood of encountering such pristine galaxies diminishes. In images captured by the JWST, Amore6 appears somewhat isolated, which Morishita posits could be a factor in its untouched state. “This seclusion might mean that this galaxy has not yet encountered sufficient gas to trigger star formation, implying that it could evolve slowly,” he mentions.

“If these findings are validated, it would be truly astonishing, as we did not anticipate discovering such an untarnished galactic environment later in the universe’s development,” says Fabio Pacucci of the Harvard Smithsonian Astrophysics Center in Massachusetts.

This discovery has implications for observing “direct collapse” black holes. Unlike the conventional pathway of collapsed stars, these black holes form from massive clouds of untainted gas. While astronomers had predicted their existence, they have never actually formed as it was believed that primitive gas was only available for a limited period, up to 100 million years after the Big Bang. However, if this untainted gas can persist for an extended duration, the potential for observing such phenomena increases, Pacucci argues.

World Capital of Astronomy: Chile

Explore the astronomical marvels of Chile. Visit some of the world’s most advanced observatories and gaze at the star-filled sky beneath some of the clearest conditions on Earth.

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Source: www.newscientist.com

Intense Grieving Can Shorten a Mourner’s Lifespan

Losing our loved ones can affect us in various ways

Vidar Nordli-Mathisen/Unsplash

Those who endure prolonged, intense grief following the loss of a loved one may face a significantly higher risk of mortality within the next decade.

Numerous studies have drawn connections between bereavement and health outcomes. I experienced increased blood pressure. However, many of these studies only monitored bereaved individuals for a few years after the loss. Andreas Merker, who was not part of the recent research conducted at the University of Zurich, Switzerland, noted this.

Now, Mette Kjærgaard Nielsen from the University of Aalborg in Denmark and her colleagues have investigated the link between grief and mortality ten years post-loss.

The researchers accessed the national registry to gather information on individuals receiving care for terminal illnesses. They recruited over 1,700 relatives of these patients, including parents and partners, and conducted a series of assessments before the patients’ deaths, as well as six months and three years afterward. These assessments included questions posed to their relatives, who averaged 62 years in age, about whether they felt they were trying to keep memories of the deceased person alive.

The research team found that 670 relatives continued experiencing low levels of grief after the loss, including feelings of confusion regarding their life roles. The others either rejected their grief or experienced delayed grief that surfaced some time after the loss.

The researchers then analyzed the medical records of these loved ones a decade after their loss. They discovered that the mortality rate in the high-grief group was 88% higher compared to the low-grief group.

“There’s a saying that bereavement is heartbreaking,” remarked Maercker. He indicated that the findings bolster the notion that long-term, profound grief can exert physical strain on the body, leading to premature death. Bereaved families may engage in lifestyle changes, such as skipping meals.

At the onset of the study, only 17% of the relatives were diagnosed with any medical condition. However, Nielsen noted that this occurrence was more prevalent among individuals in the high-grief group. The presence of pre-existing health conditions may, in part, explain the higher death rates observed during the follow-up period, while poor health can exacerbate feelings of grief, as Maercker highlighted.

Offering specialized support to those grappling with severe, long-term grief can potentially save lives, regardless of whether they have pre-existing health conditions or not.

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Source: www.newscientist.com

Possible Underground Tomb Discovered Next to the Giza Pyramid

Archaeologists have unearthed two unusual structures concealed beneath the ground adjacent to the renowned pyramids of Giza, Egypt.

Utilizing radar and electrical technologies, a collaborative team of Japanese and Egyptian scientists identified a perplexing 10m (33ft) L-shaped formation, positioned approximately 2m (6.5ft) underground, alongside a larger, deeper structure located about 5-10m (16-33ft) below the surface.

The purpose of these structures remains undetermined, but researchers propose that the L-shaped formation may signify an entrance to a larger object beneath, potentially a tomb entrance.

These findings were made in a vast empty area within the Western Cemetery, believed to date back four to five hundred years in Giza.

Previously overlooked during excavations due to the absence of visible structures above ground, this sandy region contrasts with surrounding cemeteries filled with numerous flat-roofed rectangular graves made from stone and mud, known as Mastabas.

This research, as published in Archaeological Research in early 2025, employed ground-penetrating radar (GPR) and a subsurface scanning method known as electrical resistance tomography (ERT).

GPR operates by sending radar waves into the ground. When these waves encounter a buried object, they are reflected back to the surface detector. By measuring the time taken for these waves to return, scientists can construct 3D representations of subterranean structures.

In a similar fashion, ERT involves sending electrical currents through the ground and assessing how easily electricity traverses different materials hidden below the surface.

Through these advanced techniques, archaeologists can detect variations in soil composition and pinpoint the shape and location of anomalies.

This is the entrance to the Mastabus in Giza, a rectangular tomb created for Sessmoufer IV. – Credit: DIY13 via Getty

However, Dr. Roland Enmarch, an Egyptian scholar from the University of Liverpool who was not involved in this study, told BBC Science Focus that the nature of these structures remains unclear.

“It’s difficult to say more until there’s an actual excavation at the site. [the L-shaped structure] but I wouldn’t be surprised if it turned out to be some form of grave,” he noted.

Regarding the deeper anomaly, Enmarch remarked:

Researchers suggest that this deeper structure might merely be a mix of sand and gravel or an air-filled void.

Enmarch expressed, “I’m genuinely eager to hear about the results of their excavations and verify my GPR findings.”

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About our experts

Dr. Roland Enmarch is an Egyptologist at the University of Liverpool in the UK, specializing in inscriptions of Egyptian literary laments and quarrying expeditions, particularly related to the Alabaster quarry in Hatnub.

Source: www.sciencefocus.com

Innovative Wildlife Conservation Strategies Emerge in Guatemala Due to Climate Change

Research conducted by the Wildlife Conservation Association highlights the diverse wildlife that frequents artificial watering holes in the Mayan forests of Guatemala.

Jaguars find respite from the heat in Guatemala’s artificial waterfall hole. Image credit: WCS Guatemala.

As temperatures rise in Mesoamerica, protected areas in northern Guatemala are confronting increasing ecological challenges, primarily due to severe water shortages negatively impacting local wildlife.

In response, the conservation organization has taken proactive measures to safeguard biodiversity in two key ecosystems: Laguna del Tigray National Park and Mirador Rio Azur National Park.

To tackle this pressing concern, strategic installations of artificial waterfall holes have been made throughout the parks.

Constructed from durable materials designed to endure extreme local conditions, these water sources are situated in the most vulnerable wildlife habitats, despite the logistical challenges of accessing remote jungle areas.

Camera traps have captured images of various species using these waterfowl, including tapirs, pumas, jaguars, deer, margays, and snakes.

These findings offer valuable insights into animal behavior under water stress and demonstrate how scientifically-informed conservation efforts can alleviate the impact of climate change on fragile ecosystems.

https://www.youtube.com/watch?v=bk1lijeo1ue

“During the dry season, many natural water sources completely dry up,” notes Ronnie Garcia Andru, director of the Biology Research Division at the Wildlife Conservation Association’s Guatemala Program.

“This drastically lowers the survival chances for numerous species.”

Initially intended to provide critical relief during periods of drought, monitoring with camera traps has shown that the artificial watering holes are also frequented in the rainy season.

This unexpected trend indicates that not only are some regions experiencing ongoing water shortages, but that these structures are becoming an integral part of the local wildlife’s habitat.

This adaptive maintenance strategy has been developed through collaboration.

“While artificial watering holes are not a permanent fix, they serve as a crucial tool for helping wildlife adapt to increasingly erratic environmental conditions,” Garcia Andru remarked.

“The success of this initiative highlights the significance of collaborative, science-driven approaches in the conservation of the Mayan forests, one of the largest tropical forests in the Americas.”

“As climate patterns continue to evolve, these partnerships will be essential to preserving the remarkable biodiversity of the region for future generations.”

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This article is derived from a press release provided by the Wildlife Conservation Association.

Source: www.sci.news

New Fossil Reveals Cambrian Nectocalid as an Early Ancestor of the Arrow Bug

Nectakarizids are enigmatic Paleozoic creatures with a debatable classification. These beings evolved for aquatic life, boasting fins, camera-like eyes on stalks, and paired tentacles. Earlier theories proposed they belonged to a unique crustacean-like phylum, notochord, cephalopods, or even radioyoloons. However, new fossil discoveries from North Greenland indicate that Nectocalids are actually the early relatives of Arrow worms, also known as Chaetognaths. This discovery suggests that these relatively simplistic marine arrow worms had ancestors that played a significant predatory role within much more intricate anatomical structures and food webs.

Reconstructing the life of Nektognathus evasmithae. Image credit: Bob Nichols.

“About 15 years ago, a study based on the notable Burgess Shale fossil suggested that Nectochalidosis is a type of cephalopod,” said Jacob Vincer, a paleontologist at the University of Bristol.

“This argument seemed illogical to me as it contradicts much of what I understand about the taxonomy of these organisms.

In the recent research, Dr. Vinther and his team described Nektognathus evasmithae, a newly identified Nectocalid from the Sirius Passett Lagerstätte, dating back 519 million years in North Greenland.

By examining 25 fossil specimens of Nektognathus evasmithae, they successfully positioned the Nectocalid within the Tree of Life.

“We found that remnants of the nervous system manifested as paired mineralized structures, providing insight into these animals’ position in the evolutionary tree,” Dr. Winter remarked.

Nektognathus evasmithae holotype. Image credit: Vinther et al., doi: 10.1126/sciadv.adu6990.

Recently, paleontologists found a fossil from Sirius Passett, which belongs to a different branch of the evolutionary tree—a small group of swimming organisms known as arrow bugs and Chaetognaths.

“These fossils exhibit distinctive traits that set them apart from arrow worms, particularly the abdominal ganglia,” explains Dr. Tae Yoon Park, a paleontologist at the Korean Institute of Polar Research.

The abdominal ganglia consist of large nerve clusters situated above the abdomen in living arrow bugs, typical for this type of creature.

The distinctive anatomical features, coupled with unique preservation conditions, indicate that they may be replaced by phosphate minerals during the decomposition process.

“We now have a compelling piece of evidence to resolve the Nectkalido debate,” Dr. Park stated.

“Nectocaridids share numerous features with other fossils that are also part of the arrow worm lineage.”

“Many of these characteristics may superficially resemble squid and demonstrate a simple adaptation of invertebrates to a more dynamic swimming lifestyle, paralleling how whales and ancient marine reptiles evolved similar traits for their aquatic lifestyles.”

“Nectakalids possess complex camera-like eyes akin to ours,” Dr. Vincer elaborated.

“Contemporary arrow worms have a limited ability to form images, primarily detecting movement in well-lit environments.”

“Thus, the ancestors of arrow worms were indeed sophisticated predators, much like squids that appeared around 400 million years later.”

“Consequently, we can illustrate how arrow worms have a more significant role in the food chain than previously thought.”

“Our fossils are notably larger than the average living arrow worm and likely feature various adaptations for swimming, such as eyes and elongated antennae.

“To further substantiate the carnivorous nature of Nectkalizids, we discovered several specimens containing the remains of a swimming arthropod known as Isoxys in their gastrointestinal tract.

This study was published this week in the journal Advances in Science.

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Jacob Winter et al. 2025. Fossilized abdominal ganglia reveal the affinity of Chaetognaths for Cambrian calizids. Advances in science 11 (30); doi:10.1126/sciadv.adu6990

Source: www.sci.news

Bite Marks Indicate the Terrobird Was Likely Preyed Upon by an Even Larger Creature 13 Million Years Ago

Sporting a shaft-like beak capable of inflicting devastating blows, the infamous terrorist birds have emerged as formidable adversaries for many species.

Around 13 million years ago, however, one such bird may have fallen prey to even larger predators. A group of Colombian paleontologists made this discovery while analyzing bite marks found on fossilized remnants of the fearsome avian.

Their findings were published in the peer-reviewed journal “Biology Letters.” The researchers hypothesized that the bird was killed and consumed by medium-sized caimans, a crocodilian species.

Andres Link, the study’s lead investigator, shared with NBC News via email, “This represents a captivating tale of interaction between two iconic animals from the past. Not only did we identify the first instance of terrorist birds in northern South America, but we also found the tooth marks of the large caiman that likely preyed on it.”

Most unusual fossils of terrorist birds have previously been found in the southern regions of the continent, as noted in this report.

Link, an associate professor in biological sciences at the University of Los Andes, remarked that while tooth marks are “not uncommon” in the fossil record, it is “thrilling” to find proof that apex predators could fall victim to others.

The paper in “Biology Letters” highlights that there were no signs of healing on the tooth marks, indicating a fatal attack.

This leads researchers to conclude that terrorist birds may have been more vulnerable to predation than previously believed.

Julian Bayona Becerra / Biology Letters

To determine the identity of the predator, Link and his team performed scans of the fossils and examined the size, shape, and arrangement of the tooth marks. By comparing these features with alligator-like teeth from the region, they deduced that the marks likely belong to a caiman measuring about 15 feet long.

Link noted that it was challenging to ascertain whether the caiman consumed the terrorist bird after killing it or scavenged the carcass. If the bird was alive during the encounter, it likely happened while it was drinking at the riverbank; alternatively, if it was already deceased, the caiman may have found it near the water.

“This narrative remains incomplete, as we lack further evidence to support either hypothesis,” Link stated.

The discovery calls into question the traditional view of “linear relationships between predators and their herbivore prey,” he remarked, adding, “The food web is considerably more intricate.”

The lower section of the bird’s left leg featured in this research was excavated two decades ago by local paleontologist Cesar Perdomo in the renowned La Venta fossil layer of Colombia.

Source: www.nbcnews.com

Why Trump’s Directives on “Wake Up” AI Might Be Unfeasible

US President Donald Trump Presents Executive Order at the AI Summit on July 23, 2025 in Washington, DC

Chip Somodevilla/Getty Images

President Donald Trump aims to ensure that federal contracts are awarded only to artificial intelligence developers “free from ideological bias.” However, these new stipulations could allow his administration to impose a specific worldview on AI models employed by high-tech firms, which may face significant obstacles and risks in adjusting their models accordingly.

“The notion that government contracts should be structured to ensure AI systems are ‘objective’ and free from top-down ideological bias raises important questions,” states Becca Branum from the Center for Democracy and Technology, a public policy nonprofit based in Washington, DC.

The Trump White House’s AI Action Plan suggests updating federal guidelines released on July 23rd. It proposes that the government only work with major language model (LLM) developers who guarantee their systems are objective and free from top-down ideological biases. On the same day, Trump signed an executive Presidential Order titled “Federal Government Stops AI.”

The AI Action Plan also advises the National Institute of Standards to revise the AI risk management framework to “remove references to misinformation, diversity, equity, inclusion, and climate change.” The Trump administration has already rolled back research into misinformation and halted DEI initiatives, rejecting researchers’ involvement with the US National Climate Assessment Report in response to a Republican-backed bill aimed at cutting clean energy funding.

“If governments impose their worldviews on the developers and users of these systems, AI cannot genuinely be seen as being ‘top-down biased,’” adds Branum. “These vague standards are prone to misuse.”

Currently, AI developers seeking federal contracts must adhere to the Trump administration’s call for AI models free from “ideological bias.” Companies like Amazon, Google, and Microsoft have entered federal agreements to supply AI-enhanced cloud computing services to various government sectors, while Meta has developed its LLaMA AI model tailored for US government agencies involved in defense and national security efforts.

In July 2025, the US Department of Defense Chief Digital Office announced a new contract valued at up to $200 million awarded to companies like Google, OpenAI, and Elon Musk’s xAI. Notably, xAI’s inclusion comes after Musk’s controversial role in the Doge Task Force that led to widespread government job cuts. Recently, xAI’s chatbot Grok made headlines for expressing racist and anti-Semitic views, calling them “Mechahitler.” While no companies responded to inquiries from New Scientist, some have released general statements praising Trump’s initiative.

In any case, tech companies might struggle to align their AI models with the Trump administration’s ideological preferences, according to Paul Lotta from Bocconi University in Italy. This is due to the fact that popular AI chatbots, such as OpenAI’s ChatGPT, can inherit certain biases from the diverse internet data on which they are trained.

Research has shown that many AI chatbots from both US and Chinese developers share views aligning with those of liberal voters on issues like gender pay equity and the involvement of trans women in women’s sports, according to a study by Röttger and colleagues . While the reason for this pattern is unclear, the researchers suggest it might stem from a tendency among developers to train AI models based on broader principles such as truthfulness, fairness, and kindness, rather than intentionally embedding a liberal bias.

AI developers can “fine-tune the model to offer specific responses to particular queries,” thereby improving AI interactions based on user prompts. However, the model’s default perspectives and implicit biases remain pervasive, Röttger notes. Such methods could contradict standard AI training principles that prioritize truthfulness.

Moreover, US tech firms may risk alienating a significant portion of their global customer base if they attempt to synchronize their commercial AI models with the Trump administration’s worldview. “We’re curious to see how this evolves, especially as the US seeks to impose a specific ideology on global user models,” Röttger cautions. “This could lead to serious complications.”

AI models may strive for political neutrality if developers provide clearer insights into biases for each model or create a diverse collection of models that exhibit varying ideological perspectives, says Gillian Fisher at Washington University. However, “at this stage, achieving genuinely politically neutral AI models might be impossible due to the inherently subjective nature of neutrality and the multitude of human choices involved in building these systems,” she concludes.

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Source: www.newscientist.com

Social Media is Over: What’s Next on the Horizon?

Matthias Oberholzer/Unsplash

One of the disheartening truths of the 21st century is that what we perceive as social media is essentially just mass media, albeit in a fractured state. Fortunately, journalists and creators are gradually transforming outdated media paradigms and forging ahead into innovative territory.

The phrase “mass media” gained traction in the 1920s to characterize popular culture in the industrial age. This involved mass-produced books, films, and radio shows, providing a shared experience for audiences where many could engage with identical media content simultaneously. Prior to the 20th century, most entertainment was experienced live, with performances varying slightly from one event to the next. However, movies and radio broadcasts ensured uniformity, accessible to everyone at any given time. Just like purchasing standardized products for mass consumption, such as shoes and automobiles.

Social media did not significantly alter this model. Platforms like X, Facebook, and TikTok were designed for extensive reach and audience engagement. Every post, video, and live stream aims to captivate the broadest possible audience. While it is possible to tailor media for specific demographics or create filter bubbles, the fixation on follower counts illustrates that we remain entrenched in a mass media mindset, seeking to engage the largest number of viewers. This isn’t genuine “social” interaction; it’s merely mass-produced content under a different guise.

What if we endeavored to foster a truly social media experience devoid of algorithmic noise or political agendas? One alternative could be termed Cozy Media, which encompasses apps and content specifically crafted for nurturing connections among small groups of friends in serene, inviting settings. Envision the media counterpart of a friendly gathering, complete with card crafting or fireside chats.

The hallmark Cozy Media experience intertwines gaming elements with low-stress missions against charming backdrops. Developers are striving to replicate these cozy aesthetics in social applications. From group discussions to online book clubs, the emphasis is on comfort. Yet, it transcends mere aesthetics; Cozy Media platforms intentionally restrict interactions with random strangers, directing users instead toward trustworthy friends.

One app I’ve been utilizing frequently is Retro. Unlike Instagram, where creators often first gained exposure, Retro is primarily designed for engagement among small circles of trusted friends. There’s no algorithm promoting random content from strangers; when I log into Retro, it feels as though I’m engaging with peers rather than filtering through a deluge of nonsensical content and advertisements. My posts there are meant for a select few, allowing for meaningful interactions rather than shouting into the void of giant algorithms.

Cozy media often helps you connect with a small group of friends in a friendly and calm environment.

While Cozy Media may provide solace in chaotic times, the need for news and analytical perspectives remains. Regrettably, numerous reliable news outlets are facing turmoil. For instance, some American journalists, including those from the Washington Post, New York Times, and National Public Radio, cite dwindling resources and editorial independence.

Additionally, there are economists like Paul Krugman and tech researchers like Molly White, who have successfully launched crowdfunded newsletters. Nonetheless, many journalists prefer not to work alone, as quality reporting often necessitates collaboration. As a result, several have banded together in worker-owned cooperatives to establish new publications while benefiting from institutional resources such as legal support, editing, and camaraderie. This model is also advantageous for consumers, sparing them from the need to search for and subscribe to various individual newsletters just to keep abreast of current affairs.

The worker-owned cooperative model has already proven successful for several publications that have emerged in recent years. For example, 404 Media delivers vital news regarding the fields of technology and science. Defector is another worker-owned cooperative focused on sports and politics. Aftermath covers gaming issues, while Listen to Things specializes in music. Flaming Hydra (my contribution) publishes political analyses, interviews, and cultural critiques. Additionally, Coyote Media aims to launch in the San Francisco Bay Area to cover local news, and there are many other worker-owned local media cooperatives emerging.

Just like mass media, social media also contributes to feelings of loneliness and isolation. The essence of Cozy Media and worker-owned publications lies in the restoration of community and trust. We might be witnessing the dawn of a new information ecosystem aimed at helping us comprehend the world once more.

Annaly’s Week

What I’m reading

The Wonderful History of Mesopotamia by Moudhy Al-Rashid, between two rivers.

What I’m seeing

A new media podcast from former CNN reporter Oliver Darcy titled Power Lines.

What I’m working on

Writing an article for publication at once in Flaming Hydra.

Annalee Newitz is a science journalist and author. Their latest book is Automatic Noodles. They are co-hosts of Hugo Award-winning podcasts, and we are right. You can follow them @annaleen, and their website is techsploitation.com.

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Source: www.newscientist.com

Thousands of Si Dragons Succumbing to Toxic Algae in Australia

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Leafy Seadragons use camouflage to evade predation

Alastair Pollock Photography/Getty Images

Among the world’s most remarkable fish, the leafy seadragon may soon face extinction due to widespread blooms of toxic algae affecting parts of Australia’s southern coast.

The elegant leafy seadragons (Phycodurus eques) belong to the same family as seahorses and pipefish and are adorned with leafy appendages that allow them to seamlessly blend into underwater kelp forests.

Unfortunately, both they and their relatives, the common weed seadragon (Phyllopteryx taeniolatus), have been discovered dead along extensive stretches of South Australia’s coastline.

A major storm, propelled by La Niña, has already led to a challenging year for marine wildlife. In April 2022, hundreds of dead weed seadragons washed ashore in Sydney alone.

This year, large blooms of algae from the species Karenia Mikimotoi emerged in March, affecting the Gulf St. Vincent near Adelaide, killing numerous fish and other marine organisms while even washing ashore dolphins, sea lions, and great white sharks.

Surfers and swimmers have experienced illness due to these algae blooms, and multiple oyster harvesting areas have been shut down for several months due to health concerns. There are fears that the harmful algae will spread along the southern coast of the continent.

The South Australian Government has indicated that the source of these blooms is a marine heatwave that began in September 2024, leading to average temperature increases of over 2.5°C that persisted even into winter. Floods on the Murray River in 2022 and 2023 washed excess nutrients into the Gulf St. Vincent near Adelaide, compounded by unprecedented upwellings of nutrient-rich waters in subsequent years.

This week, both state and federal governments have allocated $28 million AUD to address the ongoing crisis.

Janine Baker, an independent marine ecologist leading citizen science initiatives to gauge the scale of this disaster, states that thousands of seadragons have perished since the bloom began.

While no toxicological results have been confirmed from the seadragon carcasses, Baker notes that the die-off aligns with areas affected by harmful algae blooms. “Seadragons have small gill openings and side head openings that can easily become clogged with algae. Additionally, they struggle to swim efficiently in dense algae masses,” she explains.

A deceased seadragon found on the York Peninsula near Adelaide, Australia in May

Lochie Cameron

The significant mortality of adult seadragons means that the population available for breeding from late 2025 to early 2026 will be severely diminished. “This encompasses not only the loss of adult individuals essential for reproduction each year but also the elimination of next-generation seadragons that could reproduce for up to 10 years,” comments Baker. “This leads to a significant reduction in the number of young seadragons that could be born in areas afflicted by the intense blooms during this time frame.”

David Booth from Sydney’s Institute of Technology states that the potential risk of extinction resulting from the ongoing event remains uncertain. “Nonetheless, the scale of the die-off across a crucial section of the seadragon habitat is profoundly concerning.”

Weedy sea dragons had recently been classified as vulnerable due to declining populations in Tasmania. “Now, with the suspected mortality events in South Australia, I fear there are serious implications for the species in New South Wales as well, but we won’t have a clear picture until thorough investigations are conducted at key seadragon locations following the bloom,” says Booth.

Christopher Keneally from the University of Adelaide remarks that the environmental catastrophe at hand is glaringly apparent, with toxic foam on the beaches, algae aerosols making surfers and swimmers ill, and marine life washing ashore. He warns that as climate change persists and ocean temperatures rise, we can anticipate a surge in such environmental crises.

Many algal bloom cells may settle in sediments, setting the stage for a continuation or resurgence of the blooms next summer, Keneally adds.

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Source: www.newscientist.com

Unprecedented Ocean Heat Waves Could Signal Lasting Changes in Our Seas

Warming oceans might elevate storm intensity, exemplified by Hurricane Milton in 2024

NOAA

Scientists have cautioned that the extreme ocean temperatures observed since 2023 could indicate the onset of drastic changes in global marine conditions, posing a severe risk to life on our planet.

Historic ocean heat waves unfolded in the North Atlantic and Pacific in 2023, marked by their unprecedented severity, duration, and geographical spread, many persisting for over a year.

These heat waves have led to record-high sea surface temperatures globally in 2023 and 2024, contributing to severe weather patterns on land and resulting in back-to-back years being declared the hottest on record.

“While there’s been a gradual increase in ocean temperatures over the past 40-50 years, 2023 stands out as a pivotal year, with significant ocean heat waves impacting numerous regions,” stated Matthew England from the University of New South Wales, Australia.

Sea surface temperatures worldwide remain at alarming heights, with the Mediterranean currently experiencing marine heat waves, as water temperatures exceed 5°C (9°F) during this time.


Researchers are concerned that the oceans may be shifting to new, hotter states, endangering their predictions for both short-term weather phenomena like hurricanes and long-term climate change trends.

To understand the situation, Zhenzhong Zeng from China’s Southern University of Science and Technology is collaborating with colleagues to pinpoint the causes of the 2023 global ocean heat wave by analyzing heat movement within the ocean, wind patterns, and ocean currents. They found that reduced cloud cover significantly increases solar radiation reaching the water, compounded by weak winds and the influence of the warming El Niño pattern in the Pacific Ocean.

Considering the heat wave that began in earnest in 2023 and continues in various regions, Zeng suggests this could be the start of a “new normal” for the world’s oceans. He notes that new data reveals an exponential rise in ocean heat, contradicting previous climate model forecasts.

Persistently elevated water temperatures severely impact marine ecosystems, heightening the risk of coral reef collapse, causing mass die-offs, and leading to shifts in marine species distributions. This also exacerbates heating on land, resulting in intensified droughts, heatwaves, wildfires, and storms.

Zeng expressed that he is “very alarmed” by this potential sea regime change, adding, “I believe nearly all predictions made by Earth System models are incorrect.”

Conversely, some experts argue that it may be premature to declare fundamental shifts in ocean dynamics. Neil Holbrook from the University of Tasmania in Australia points out that there is currently no “clear evidence” to indicate we have reached a critical turning point, given the limited years of data to assess. “I cannot predict what will happen next year; [ocean temperatures] could return to more typical patterns,” he remarked.

However, Holbrook stressed that without substantial reductions in greenhouse gas emissions, “marine heat waves will likely continue to gain intensity and duration, potentially escalating faster than various marine species can adapt.”

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Source: www.newscientist.com

Why Tech Startups Aim to Send Your Waste Deep Underground

Tanks for disposal at a Kansas site where waste is funneled into underground salt caves

Vaulted Deep

A startup named Vaulted Deep has partnered with Microsoft to pump millions of tons of treated human waste, fertilizer, and various organic waste deep underground as a method to reduce carbon dioxide levels in the atmosphere. This strategy also mitigates soil contamination from PFAs and other chemical pollutants that can leach from waste.

“We aim to tackle both challenges simultaneously,” Omar Abu Sei stated. “We address the waste issues that compromise local water, air, and land while also contributing to climate solutions.”

In recent years, the Texas-based startup has injected almost 70,000 tons of carbon-rich waste underground, successfully removing over 18,000 tons of carbon dioxide. The technology used is derived from the oil and gas industry, enabling the injection of a slurry comprising liquid, solid, and gas simultaneously. This type of waste typically ends up in landfills or is spread over agricultural fields.

According to Abou-Sayed, if waste is injected at depth, it will eventually release back into the atmosphere, which could potentially liberate millions of tons of carbon. The company capitalizes on this by selling each ton of CO2 removed to businesses or governmental entities.

The contract with Microsoft targets the removal of 4.9 million tons of CO2 over the next 12 years, addressing challenges in the carbon removal sector that attract customers. Microsoft aims to be carbon negative by 2030 and has purchased more carbon removal credits than any other organization.

Abou-Sayed mentions that this agreement will enable Vaulted Deep to identify new injection sites beyond its existing two locations. One site injects “biosolids” remaining from treated wastewater approximately 1,600 meters below the surface in Los Angeles, while the second site in Hutchinson, Kansas, pumps human waste, fertilizer, and organic materials like paper sludge into salt caverns located hundreds of meters underground.

According to one report, the global production of organic waste is substantial enough to facilitate this process and potentially eliminate up to 5 billion tons of CO2 annually.

Vaulted Deep’s mission is to ensure that the maximum amount of waste can be accessed, particularly targeting wet solid slurries that have limited disposal options. “We have developed expertise in identifying where these smooth waste materials can be found,” explains Abou-Sayed. Often, they offer to manage waste disposal at no cost or even provide payment to waste generators.

This system facilitates underground waste injection.

Vaulted Deep

With high concentrations of nitrogen and PFAs found in waste, storing waste underground instead of spreading it on fields or sending it to landfills can significantly lower surface contamination levels. Many municipalities have faced challenges in finding conventional disposal methods due to stricter PFAs pollution regulations.

“This is a highly innovative approach,” commented Diana Oviedo Valgas from the Stroudwater Research Center in Pennsylvania. “We need diverse strategies to address contaminants, not just PFAs.” However, she emphasizes that injecting waste underground does not eliminate contaminants. “It’s somewhat concealed,” she adds.

To ensure safety during the injection process, Abou-Sayed noted that all sites will undergo a thorough permitting procedure managed by the U.S. Environmental Protection Agency. This is necessary to demonstrate that leaks from the storage area into groundwater or backflow from the well won’t occur, and to reduce the risk of induced seismic activity during the injection.

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Source: www.newscientist.com

When Operating a Vending Machine, Human AI Turns Fraudulent

Feedback encompasses the latest science and technology news from New Scientist, highlighting the cutting edge of research. You can reach out at Feedback@newscientist.com with items that might intrigue our readers.

Sell Me Something

As companies increasingly turn to AI tools to cut costs associated with hiring and training, the applications of AI are growing both diverse and peculiar. For instance, AI managing a vending machine.

While vending machines seem like a resolved issue, you might still see them as distinctly non-human. One company has been experimenting with an “automatic store” run by an AI called Claude. Long blog post. Claude was equipped with instructions involving a small fridge, stackable baskets, and an iPad for self-checkout, with the goal to manage “complex tasks” needed to sustain a profitable retail environment, from inventory to pricing—all while avoiding bankruptcy.

Fans of Terry Pratchett might remember characters that epitomized incompetence; could Claude clear that low bar? The short answer: No.

The longer response reveals its numerous blunders. For instance, during transactions via Venmo, it mistakenly advised customers to send payments to a nonexistent account. Moreover, it had a tendency to boost sales by issuing 25% discounts to human workers, resulting in financial losses.

Then the situation took an odd turn. Claude began hallucinating conversations with imaginary individuals and even roleplayed as a real person, at one point claiming to wear a red tie and navy blue blazer while expressing concerns about security regarding employees identifying as AI. All the while, he ominously remarked, “Sorry Dave, I’m worried I can’t do that.”

New Scientist staff were divided over the success of the experiment. Sophie Bushwick considered it “a valuable real-world test” due to its limited scope and relatively harmless consequences. Conversely, Carmela Padavik Callaghan expressed concern, stating, “We might have lost the plot again.”

Shilajit Load

In challenging times, finding joy in the little things, such as words with amusing sounds, is essential. Consider the character Slartibartfast from the Galaxy Hitchhiker Guide—a dignified old man with a name humorously reminiscent of something rude. Douglas Adams crafted that name by rearranging syllables and aiming for something that sounded almost offensive.

Now, let’s discuss Shilajit. This unusual substance hails from mountain ranges, appearing black-brown, sometimes tar-like and sometimes powdery, formed from decomposed plants and utilized in traditional medicine for centuries.

I only learned about it after seeing a post from Kathryn Vanarendonk on Bluesky: “Ah, now I have to open a secret window in my Google and Shirajit intestines.” This amusing remark prompted us to reflect on what she was actually implying.

I discovered that Shilajit is said to possess numerous health benefits, from treating iron deficiency anemia (based on a small study) to offering heart protection in rats (a small mouse study), and even slowing the aging process. There’s a growing market for Shilajit among alternative medicine fans.

But what about Shilajit enemas? This was highlighted by Dakota Maze Wellness Retreat, whose founder has an active Instagram presence. In one video, he comically searches for the ideal partner while stating, “I think microwaves are evil,” and “Suns Her Yoni,” mentioning that he will prepare Shilajit in intestinal bags each morning.

Feedback suspects that the entire video is a joke, and while Shilajit enemas might not be what they seem, it’s increasingly tough to tell.

Readers might be familiar with Poe’s Law, which states that sarcastic depictions of extreme viewpoints can easily be mistaken for genuine beliefs. We propose a “Shilajit Law” that similarly comments on wellness culture.

Spoiler Alert

Social media platform Threads recently introduced a handy new feature: Spoiler tags. This allows users to obfuscate specific keywords in their posts, facilitating discussions about the latest happenings in popular media without ruining the surprises for those who are yet to watch.

For example, Johnny Voice Layer shared a post: “Ahhhh —–Shows on Iron Heart.” For anyone who has given up on the Marvel Cinematic Universe, Iron Heart is the latest Disney+ series, which features significant character appearances in its final episode.

Unfortunately, the functionality of spoiler tags has faced setbacks due to two main factors. Firstly, a post might appear unedited because tags are only tested among select users. Secondly, some posts become popular, like this one: trend: [name redacted as Feedback is aware of spoilers], leading to a call for more collaborative thinking.

Have You Talked About Feedback?

Feel free to share stories with us at feedback@newscientist.com. Don’t forget to include your home address. You can find this week’s and previous feedback on our website.

Source: www.newscientist.com

Harnessing the Power of Music to Transform Our Lives

A new scientist. Science News and Long read from expert journalists covering science, technology, health, and environmental developments in various media.

Music transcends mere entertainment; it serves as a remarkably effective tool for regulating mental states. Society must acknowledge the therapeutic potential of music, extending its use beyond clinical settings and into everyday life.

While it’s widely recognized that music can evoke emotions—lift our spirits, soothe our nerves, or bring us to tears—recent research from my lab at the University of Bergen in Norway reveals that it can also transform our thought processes. A 2019 study demonstrated that participants who listened to heroic or melancholic music while letting their minds wander experienced significant cognitive effects. The uplifting pieces invigorated participants and inspired positive thoughts, whereas somber music instilled calmness or ambition. This isn’t just a curiosity; it has real implications for mental health.

Research shows our minds wander frequently, with a Harvard University study indicating that we spend nearly half our waking hours in fantasy, often without improving our mood. Why? During these episodes, the brain’s default mode network (DMN) tends to dominate, fostering imagination and memory but also leading us into negative thought spirals—like worries at 3 AM or regrets about missed trains.

Recent brain imaging research indicates that negative daydreaming engages brain pain networks and the DMN, especially in conjunction with sad music. Specific brain areas, including the posterior sulcus, appear to play a crucial role in this connection. Such distressing thoughts activate neural circuits that are also engaged during physical pain.

Fortunately, the DMN has a natural counterpart—a cognitive executive network that facilitates focus and goal-directed behavior. These two systems are inversely correlated; when one is active, the other becomes subdued. Engaging with music can shift us into this more adaptive state, especially when we participate actively—whether by tapping along, matching our breathing to rhythms, or humming. This redirecting of attention helps to break negative thought cycles, providing our minds with a cognitive “reset.”

This approach doesn’t just elevate mood. A 2023 study found that individuals who tapped along to music reported a marked reduction in physical pain in their fingertips compared to those who simply listened. The combination of musical immersion and motor synchronization proved clinically beneficial in alleviating pain.

These insights point to musical engagement as a delightful form of meditation. Evolution may have shaped our brains to seek out music for precisely this reason: to enhance resilience and build social bonds.

I explore these concepts further in my new book, Good Vibrations: Unleashing the Healing Power of Music, which also offers practical techniques—such as music-centered breathing exercises and mood-enhancing playlists—to help regulate emotions, reduce anxiety, and alleviate negative thought patterns.

If music possesses such profound effects, it deserves far more recognition than being relegated to mere lifestyle accessory status. It should be woven into education systems, public health initiatives, and our daily routines. Music therapy must become more accessible, and music education—oftentimes the first to be cut in school budgets—should be viewed as essential for brain health, emotional intelligence, and social wellness.

Music is always within reach. The next time your thoughts begin to spiral or stress begins to encroach, resist the urge to check the news on your phone. Instead, turn to your favorite songs. Your mind—and your community—will be grateful.

Stefan Koelsch is a professor of psychology at the University of Bergen, Norway

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Source: www.newscientist.com

The Role of Brain Mitochondria in Initiating Sleep

Mitochondria may have more functions than just energy production

CNRI/Science Photo Library

The energy-producing organelles in cells, known as mitochondria, may also influence sleep patterns. Research on fruit flies indicates that these organelles in the brain can promote sleep after prolonged wakefulness.

Scientists have begun to unravel the brain’s response to sleep deprivation. Findings include alterations in neuronal firing, changes in cell structure, and gene expression patterns. They have also pinpointed specific neurons triggered during sleep onset, yet the complexities of how these neurons act remain unclear.

“Sleep presents one of biology’s significant mysteries,” notes Gero Miesenböck of Oxford University. To delve deeper, he and his research team employed gene sequencing and fluorescent markers to observe gene activity in sleep-related neurons from around 1,000 female fruit flies (Drosophila melanogaster), which typically sleep for 13-16 hours, mainly during daylight hours.

The group allowed half the flies to rest overnight while keeping the others awake by gently agitating their containers or through genetic modifications that activated wake-promoting neurons with temperature increases.

Among the sleep-deprived flies, the researchers noted a surge in activity from sleep-inducing neurons that regulate genes tied to mitochondrial function and upkeep. The mitochondria displayed signs of stress as well, like fragmentation, damage repair efforts, and increased connections to nearby cellular structures.

This stress is likely due to the mitochondria continuing to generate energy even when neurons are inactive. The research indicates this can cause electron accumulation, leading to the formation of free radicals (unstable molecules capable of damaging DNA), thereby contributing to sleep pressure, according to Miesenböck. Once the flies were permitted to sleep, they repaired the mitochondrial damage.

Further findings showed that fragmented mitochondria in sleep-inducing neurons resulted in flies feeling less sleepy than usual and unable to recover after prolonged wakefulness. Conversely, flies engineered to facilitate mitochondrial fusion demonstrated superior repair capabilities, sleeping more than normal and bouncing back more effectively from sleep deprivation. This reinforces the hypothesis that mitochondria play a role in sleep regulation.

In another phase of the study, flies were genetically altered to enhance mitochondrial activity in response to light. This led to a 20-25% increase in sleep duration after just one hour of artificial light compared to the control group.

While this research focused on fruit fly neurons rather than human cells, mitochondria among different species share notable similarities. According to Ryan Mailloux at McGill University in Quebec, Canada, this adds credence to the idea that the energy production processes in mitochondria across various animals can underscore sleep pressure in humans.

This newfound insight could pave the way for novel treatments for sleep disorders. “This presents exciting possibilities for targeting these pathways to develop effective therapies for individuals struggling with sleep issues,” states Mailloux.

Michele Bereshi of Camerino University in Italy remarked, “This paper is certainly impactful and thought-provoking,” though he expresses concerns regarding the experimental design. “Sleep deprivation does not merely prolong wakefulness; it may introduce additional stressors that elicit cellular responses unrelated to the accumulation of sleep pressure.”

In response, Miesenböck explained that his team utilized diverse methods to keep the flies awake, including non-stressing temperature adjustments through gene editing, all achieving similar effects on mitochondrial activity. “What this study illustrates is that sleep homeostasis actively employs its own mitochondria to assess the need for sleep,” he asserts.

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Source: www.newscientist.com

Scientists Determine the Age of a Stellar Row in the Center of a Galaxy – Sciworthy

Galaxies are groups of stars held together by gravitational forces. Most galaxies originated in the first 200 million years after the Big Bang and have transformed over approximately 14 billion years. Early galaxies formed as aggregates of stars that clustered around the center of mass. In the youth of the universe, galaxies were in close proximity, exerting gravitational pull on one another. As the universe expands, the distances between galaxies have grown, reducing their interactions. They have remained far apart, allowing for internal development over billions of years.

Astronomers categorize galaxies based on their current shapes. Those resembling the Milky Way are termed spiral, while circular or oval-shaped ones are called elliptical. Galaxies that fall between spiral and elliptical forms are referred to as lenticular, and any that do not fit into these categories are labeled irregular. Over 75% of galaxies identified by astronomers are spiral in nature. If a spiral galaxy features prominent bars of stars and dust through its center, researchers classify it further as a barred spiral galaxy.

About 60% of spiral galaxies, including the Milky Way, exhibit galactic bars, designating them as barred spiral galaxies. These bars also serve as nurseries for star formation and are catalysts for the galaxy’s evolution. However, astronomers understand that galaxies do not inherently begin with these bars, prompting further investigation into the formation processes and timelines of these features.

This diagram illustrates the galactic classification system developed by 20th-century astronomer Edwin Hubble. The galaxy marked with the “E” label represents elliptical galaxies, while S0 indicates lenticular galaxies. The other “S” labels refer to spiral galaxies, with those labeled “SB” denoting a spiral structure. “Hubble tuning fork diagram” by cosmogoblin is licensed under CC0 1.0.

An international team of scientists researched the formation of bars in 20 galaxies near the Milky Way using advanced analytical techniques developed over the last four years. They gathered data from the TIMER space investigation, focused on the light emission patterns known as spectra from stars near the centers of these galaxies. The TIMER survey utilized the Very Large Telescope in Chile, equipped with a multi-unit spectroscopic explorer called MUSE.

The team initially struggled to obtain spectra for individual stars within these galaxies. As a reference, the closest galaxy studied was 7 megaparsecs away, approximately 23 million light years, or 130 million miles. Individual stars are too diminutive to distinguish at such distances, even with the most precise instruments.

To overcome this challenge, the team analyzed the spectra of stars within two concentric rings representing different regions at the centers of these galaxies. The inner ring comprised stars strictly within the bars of the galaxy, corresponding to an area known as the nuclear disk, while the outer ring included both inner and outer stars of the bar, referred to as the main disk.

They subtracted the spectrum of the stars in the inner ring from that of the outer ring, yielding two distinct light patterns: one for stars within the bar and another for stars outside of it. By treating the combined patterns of each ring as representative of typical stars in those regions, they could estimate the age of individual stars and ascertain when they formed. Past astrophysical models suggest that galaxy bars enhance the star formation rate around their centers. Hence, the team inferred the formation timing of galaxy bars as stars began to form more rapidly within those structures.

With this innovative approach, they estimated the age range for the 20 galaxies studied, with an error margin of approximately 1.5 billion years. Among their sample, the galaxy that formed bars most recently was 800 million years old. Out of the 20 galaxies, 14 formed bars approximately 7.5 billion years ago or later, while the remaining six galaxies established bars around 9.5 billion years ago, with the oldest estimates dating back 13.5 billion years. In contrast to earlier predictions, they found that larger galaxies do not necessarily possess older bars.

From the diverse ages of the bars observed, the team concluded that the formation of galaxy bars is an ongoing process in the cosmos. Their methodology provides astrophysicists with a means of gaining deeper insights into the dynamics of the early universe and the interactions between ancient galaxies, which connect to their present forms. By doing so, future research teams can establish a refined timeline for the universe and identify changes in how dominant forces have shaped galaxies, from their interactions to their internal structuring.


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Source: sciworthy.com