An anonymous reader quotes a report from the New York Times: In a paper, published last month in the journal The Anatomical Record, researchers offered a novel take on falling felines. Their evidence suggests new insights into the so-called falling cat problem, particularly that cats have a very flexible segment of their spines that allows them to correct their orientation midair. [...] People have been curious about falling cats perhaps as long as the animals have been living with humans, but the method to their acrobatic abilities remains enigmatic. Part of the difficulty is that the anatomy of the cat has not been studied in detail, explains Yasuo Higurashi, a physiologist at Yamaguchi University in Japan and lead author of the study. [...]

Modern research has split the falling cat problem into two competing models. The first, "legs in, legs out," suggests that cats correct their falling trajectory by first extending their hind limbs before retracting them, using a sequential twist of their upper and then lower trunk to gain the proper posture while in free fall. The second model, "tuck and turn," suggests that cats turn their upper and lower bodies in simultaneous juxtaposed movements. [...]

The researchers found that the feline spine was extremely flexible in the upper thoracic vertebrae, but stiffer and heavier in the lower lumbar vertebrae. The discovery matches video evidence showing the cats first turn their front legs, and then their lower legs. The results suggest the cat quickly spins its flexible upper torso to face the ground, allowing it to see so that it can correctly twist the rest of its body to match. "The thoracic spine of the cat can rotate like our neck," Dr. Higurashi said.

Experiments on the spine show the upper vertebrae can twist an astounding 360 degrees, he says, which helps cats make these correcting movements with ease. The results are consistent with the "legs in, legs out" model, but definitively determining which model is correct will take more work, Dr. Higurashi says. The results also yielded another discovery: Cats, like many animals, appear to have a right-side bias. One of the dropped cats corrected itself by turning to the right eight out of eight times, while the other turned right six out of eight times.

Van Allen Probe A, a 1,300-pound (600 kg) NASA satellite launched in 2012 to study Earth's radiation belts, is expected to re-enter Earth's atmosphere this week. While most of it is expected to burn up during descent, "some components may survive," reports the BBC. "The space agency said there is a one in 4,200 chance of being harmed by a piece of the probe, which it characterized as 'low' risk." From the report: The spacecraft is projected to re-enter around 19:45 EST (00:45 GMT) on Tuesday the U.S. Space Force predicted, according to Nasa, though there is a 24-hour margin of "uncertainty" in the timing. [...] The spacecraft and its twin, Van Allen Probe B, were on a mission to gather unprecedented data on Earth's two permanent radiation belts. It was not immediately clear where in Earth's atmosphere the satellite is projected to re-enter. NASA and the U.S. Space Force has said it will monitor the re-entry and update any predictions. [...] Van Allen Probe B is not expected to re-enter the Earth's atmosphere before 2030.

An anonymous reader quotes a report from the Guardian: AI has made it vastly easier for malicious hackers to identify anonymous social media accounts, a new study has warned. In most test scenarios, large language models (LLMs) -- the technology behind platforms such as ChatGPT -- successfully matched anonymous online users with their actual identities on other platforms, based on the information they posted. The AI researchers Simon Lermen and Daniel Paleka said LLMs make it cost effective to perform sophisticated privacy attacks, forcing a "fundamental reassessment of what can be considered private online".

In their experiment, the researchers fed anonymous accounts into an AI, and got it to scrape all the information it could. They gave a hypothetical example of a user talking about struggling at school, and walking their dog Biscuit through a "Dolores park." In that hypothetical case, the AI then searched elsewhere for those details and matched @anon_user42 to the known identity with a high degree of confidence. While this example was fictional, the paper's authors highlighted scenarios in which governments use AI to surveil dissidents and activists posting anonymously, or hackers are able to launch "highly personalized" scams.

Long-time Slashdot reader fjo3 shared this report from Agence France-Presse: Japan has approved ground-breaking stem-cell treatments for Parkinson's and severe heart failure, one of the manufacturers and media reports said Friday, with the therapies expected to reach patients within months.

Pharmaceutical company Sumitomo Pharma said it received the green light for the manufacture and sale of Amchepry, its Parkinson's disease treatment that transplants stem cells into a patient's brain. Japan's health ministry also gave the go-ahead to ReHeart, heart muscle sheets developed by medical startup Cuorips that can help form new blood vessels and restore heart function, media reports said. The treatments could be on the market and rolled out to patients as early as this summer, reports said, citing the health ministry, becoming the world's first commercially available medical products using induced pluripotent stem cells...

In a statement, Sumitomo Pharma said it had obtained "conditional and time-limited approval" for the manufacture and marketing of Amchepry under a system which is reportedly designed to get these products to patients as quickly as possible. The approval is a kind of "provisional license", the Asahi newspaper said, after the safety and efficacy of the treatment was judged based on data from fewer patients than in ordinary clinical trials for drugs.

A trial led by Kyoto University researchers indicated that the company's treatment was safe and successful in improving symptoms. The study involved seven Parkinson's patients aged between 50 and 69, with each receiving a total of either five million or 10 million cells implanted on both sides of the brain... The patients were monitored for two years and no major adverse effects were found, the study said. Four patients showed improvements in symptoms.
The article notes that "Worldwide, about 10 million people have the illness, according to the Parkinson's Foundation," while also notes that today's current therapies "improve symptoms without slowing or halting the disease progression..."

Dustin Destree shares a report from Phys.org: Although plastic particles in the air are increasingly coming into focus, knowledge about their distribution and effects is still limited. Chemical analyses from Leipzig now provide details from Germany for the first time: Around 4% of the particulate matter consists of plastic. Around two-thirds of this comes from tire abrasion. Extrapolated, this means that people in a city like Leipzig inhale approximately 2.1 micrograms of plastic per day through the air, which increases the risk of death from cardiovascular disease by 9% and from lung cancer by 13%. These findings underscore the need to take global action against plastic pollution and to examine air quality and health at the regional level, write researchers from the Leibniz Institute for Tropospheric Research (TROPOS) and Carl von Ossietzky University of Oldenburg in the journal Communications Earth & Environment. "With around two-thirds of microplastics coming from tire abrasion, this shows that action is needed and that the fine dust problem cannot be solved by switching to electric mobility alone. To protect health, it would be important to also take tire abrasion into account when regulating air quality and to set limits for microplastics in the air," demands Prof. Hartmut Herrmann from TROPOS, who led the study.

The study has been published in the journal Communications Earth & Environment.

alternative_right shares a report from ScienceAlert: According to a study of 38 adult human brains donated to science, superagers -- people who retain exceptional memory as they age -- have roughly twice as many immature neurons as their peers who age more typically. Moreover, people with Alzheimer's disease show a marked reduction in neurogenesis compared to a normal baseline. [...]

Led by researchers at the University of Illinois Chicago, the team set out to examine a variety of postmortem hippocampal tissue samples to see if they could identify markers of neurogenesis -- and if different groups had any notable differences. The brain samples were donated from five groups: eight healthy young adults, aged between 20 and 40; eight healthy agers, aged between 60 and 93; six superagers, aged between 86 and 100; six individuals with preclinical Alzheimer's pathology, aged between 80 and 94; and 10 individuals with an Alzheimer's diagnosis, aged between 70 and 93. The young healthy adult brain tissue was first analyzed to establish the neurogenesis pathways in the adult brain. Then, they analyzed 355,997 individual cell nuclei isolated from the hippocampus, searching for three different stages of cell development: Stem cells, which can develop into neurons; neuroblasts, which are stem cells in the process of that development; and immature neurons, on the verge of functionality. The results were striking.

"Superagers had twice the neurogenesis of the other healthy older adults," [says neuroscientist Orly Lazarov of the University of Illinois Chicago]. "Something in their brains enables them to maintain a superior memory. I believe hippocampal neurogenesis is the secret ingredient, and the data support that." That's an interesting result on its own, but the data from the individuals with preclinical Alzheimer's pathology and Alzheimer's diagnoses is where the real meat of the study sits. In the preclinical group, subtle molecular changes hinted that the system supporting new neuron growth was beginning to falter. In the Alzheimer's group, a clear drop in immature neurons was evident. A genetic analysis of the nuclei also showed that superager neural cells have increased gene activity linked to stronger synaptic connections, greater plasticity, and brain-derived neurotrophic factor, a critical protein for neural survival, growth, and maintenance. Taken together, these three things can be interpreted as resilience. The research has been published in the journal Nature.

Slashdot reader JustAnotherOldGuy shared this report from the Guardian: Chronic ocean heating is fuelling a "staggering and deeply concerning" loss of marine life, a study has found, with fish levels falling by 7.2% from as little as 0.1C of warming per decade. Researchers examined the year-to-year change of 33,000 populations in the northern hemisphere between 1993 and 2021, and isolated the effect of the decadal rate of seabed warming from short shifts such as marine heatwaves. They found the drop in biomass from chronic heating to be as high as 19.8% in a single year.

"To put it simply, the faster the ocean floor warms, the faster we lose fish," said Shahar Chaikin, a marine ecologist at the National Museum of Natural Sciences in Spain and the study's lead author. "A 7.2% decline for every tenth of a degree per decade might sound small," he added. "But compounded over time, across entire ocean basins, it represents a staggering and deeply concerning loss of marine life."

sciencehabit quotes a report from Science Magazine: For decades, planetary scientists have pored over a mystery hidden within the Moon rocks retrieved by Apollo astronauts in the 1960s and '70s. Minerals in the rocks record the imprint of a magnetic field, nearly as powerful as Earth's, that existed more than 3.5 billion years ago and seemed to persist for millions of years. But generating a magnetic field requires a dynamo -- a churning, molten core -- and most researchers believed the Moon's tiny core would have long since cooled off, 1 billion years after it formed. Corroborating that picture are other ancient Moon rocks of about the same age that suggest the field was weak -- leaving planetary scientists baffled.

Now, researchers are proposing a new way to solve the puzzle. A paper published today in Nature Geoscience theorizes that between 3.5 billion and 4 billion years ago, blobs of titanium-rich magma melted episodically just above the core, rising in plumes that drove volcanic eruptions on the surface. By intermittently stirring up the Moon's core, these bouts of melting would have caused the Moon's magnetic field to flicker on in short, powerful bursts. The paper "links a few different concepts that people were thinking about separately, but hadn't actually brought together," says Sonia Tikoo, a planetary geophysicist at Stanford University who was not involved in the study.

CNN reports on a 13,000-year-old glacier in a Romanian cave, where scientists say a bacterial strain they thawed and analyzed "is resistant to 10 modern antibiotics used to treat diseases such as urinary tract infections and tuberculosis."

But there's no evidence the bacteria is harmful to humans, CNN notes, and "The scientists said the insights they have gained from the work may help in the fight against modern superbugs that can't be treated by commonly used antibiotics." Analysis of the Psychrobacter SC65A.3 genome revealed 11 genes that are potentially able to kill or stop the growth of other bacteria, fungi and viruses... Matthew Holland, a postdoctoral researcher in medicinal chemistry at the UK's University of Oxford, said that researchers were searching in new and extreme environments, such as ice caves and the seafloor, for biomolecules that could be developed into new antibiotic drugs. He was not involved in the new study. "The team in Romania found this particular bug had resistance to 10 reasonably advanced synthetic antibiotics and that in itself is interesting," he said. "But what they report as well is that it secreted molecules that were able to kill a variety of already resistant, harmful bacteria.

"So the hope is that can we look at the molecules it makes and see if there's the possibility within those molecules to make new antibiotics."

An anonymous reader quotes a report from Scientific American: Why does "bouba" sound round and "kiki" sound spiky? This intuition that ties certain sounds to shapes is oddly reliable all over the world, and for at least a century, scientists have considered it a clue to the origin of language, theorizing that maybe our ancestors built their first words upon these instinctive associations between sound and meaning. But now a new study adds an unexpected twist: baby chickens make these same sound-shape connections, suggesting that the link to human language may not be so unique. The results, published today in Science, challenge a long-standing theory about the so-called bouba-kiki effect: that it might explain how humans first tethered meaning to sound to create language. Perhaps, the thinking goes, people just naturally agree on certain associations between shapes and sounds because of some innate feature of our brain or our world. But if the barnyard hen also agrees with such associations, you might wonder if we've been pecking at the wrong linguistic seed.

Maria Loconsole, a comparative psychologist at the University of Padua in Italy, and her colleagues decided to investigate the bouba-kiki effect in baby chicks because the birds could be tested almost immediately after hatching, before their brain would be influenced by exposure to the world. The researchers placed chicks in front of two panels: one featured a flowerlike shape with gently rounded curves; the other had a spiky blotch reminiscent of a cartoon explosion. They then played recordings of humans saying either "bouba" or "kiki" and observed the birds' behavior. When the chicks heard "bouba," 80 percent of them approached the round shape first and spent an average of more than three minutes exploring it compared with an average of just under one minute spent exploring the spiky shape. The exploration preferences were flipped when the chicks heard "kiki."

Because the tests took place within the chicks' carefully supervised first hours of life outside their eggshell, this association between particular sounds and shapes couldn't have been learned from experience. Instead it may be evidence of an innate perceptual bias that goes back way farther in our evolutionary history than previously believed. "We parted with birds on the evolutionary line 300 million years ago," says Aleksandra Cwiek, a linguist at Nicolaus Copernicus University in Toru, Poland, who was not involved in the study. "It's just mind-blowing."

The Food and Drug Administration has reversed its decision on Moderna's flu vaccine and has agreed to review it for possible approval, Moderna announced on Wednesday. From a report: Last week, the agency rejected Moderna's application for review of a new flu vaccine, saying the company's research design was flawed. But in subsequent discussions the company said that the agency had relented and agreed to begin a review.

Moderna said it split its application for the flu vaccine based on age, seeking a traditional approval for people 50 to 64 years old, and accelerated approval for those 65 and older. The company also said it agreed to conduct an additional study among those 65 and older once the vaccine reached the market. Moderna said on Wednesday that the F.D.A. set a deadline of August to decide whether to approve the vaccine. If it is authorized, it would be available for those older adults in the flu season that begins later this year.

The vaccine uses messenger RNA technology, which Health Secretary Robert F. Kennedy Jr. has repeatedly criticized as unsafe and ineffective. The mRNA approach, which instructs the body to produce a fragment of a virus that sets off an immune response, was widely successful in Covid vaccines and is considered generally safe by public health experts and scientists.

An anonymous reader quotes a report from Fortune: In 1987, economist and Nobel laureate Robert Solow made a stark observation about the stalling evolution of the Information Age: Following the advent of transistors, microprocessors, integrated circuits, and memory chips of the 1960s, economists and companies expected these new technologies to disrupt workplaces and result in a surge of productivity. Instead, productivity growth slowed, dropping from 2.9% from 1948 to 1973, to 1.1% after 1973. Newfangled computers were actually at times producing too much information, generating agonizingly detailed reports and printing them on reams of paper. What had promised to be a boom to workplace productivity was for several years a bust. This unexpected outcome became known as Solow's productivity paradox, thanks to the economist's observation of the phenomenon. "You can see the computer age everywhere but in the productivity statistics," Solow wrote in a New York Times Book Review article in 1987.

New data on how C-suite executives are -- or aren't -- using AI shows history is repeating itself, complicating the similar promises economists and Big Tech founders made about the technology's impact on the workplace and economy. Despite 374 companies in the S&P 500 mentioning AI in earnings calls -- most of which said the technology's implementation in the firm was entirely positive -- according to a Financial Times analysis from September 2024 to 2025, those positive adoptions aren't being reflected in broader productivity gains.

A study published this month by the National Bureau of Economic Research found that among 6,000 CEOs, chief financial officers, and other executives from firms who responded to various business outlook surveys in the U.S., U.K., Germany, and Australia, the vast majority see little impact from AI on their operations. While about two-thirds of executives reported using AI, that usage amounted to only about 1.5 hours per week, and 25% of respondents reported not using AI in the workplace at all. Nearly 90% of firms said AI has had no impact on employment or productivity over the last three years, the research noted. However, firms' expectations of AI's workplace and economic impact remained substantial: Executives also forecast AI will increase productivity by 1.4% and increase output by 0.8% over the next three years. While firms expected a 0.7% cut to employment over this time period, individual employees surveyed saw a 0.5% increase in employment.

Longtime Slashdot reader walterbyrd shares a report from ABC News: In a study of nearly 28 million older Americans, long-term exposure to fine particle air pollution raised the risk of Alzheimer's disease. That link held even after researchers accounted for common conditions like high blood pressure, stroke and depression. Fine particle air pollution, known as PM2.5, consists of tiny particles in the air that come from car exhaust, power plants, wildfires, and burning fuels, according to the American Lung Association. They are small enough to travel deep into the lungs and even reach the bloodstream.

The research, conducted at Emory University and published in PLOS Medicine, tracked health data over nearly two decades to explore whether air pollution harms the brain indirectly by causing high blood pressure or heart disease, which, in turn, leads to dementia. However, these "middleman" conditions accounted for less than 5% of the connection between pollution and Alzheimer's, the research found. The researchers say this suggests that over 95% of the Alzheimer's risk comes from the direct impact of breathing in dirty air, likely through inflammation or damage to brain cells. "The relationship between PM2.5 and AD [Alzheimer's disease] has been shown to be pretty much linear," said Kyle Steenland, a professor in the departments of environmental health and epidemiology at the Rollins School of Public Health at Emory University, and senior author of the study. "The reason this is particularly important is that PM2.5 is known to be associated with high blood pressure, stroke and depression -- all of which are associated with AD. So, from a prevention standpoint, simply treating these diseases will not get rid of the problem. We have to address exposure to PM2.5."

Up to a third of people worldwide have shoulder pain; it's one of the most common musculoskeletal complaints. But medical imaging might not reveal the problem -- in fact, it could even cloud it. From a report: In a study published in JAMA Internal Medicine this week, 99 percent of adults over 40 were found to have at least one abnormality in a rotator cuff on magnetic resonance imaging (MRI). The rotator cuff is the group of muscles and tendons in a shoulder joint that keeps the upper arm bone securely in the shoulder socket -- and is often blamed for pain and other symptoms.

The trouble is, the vast majority of the people in the study had no problems with their shoulders. The finding calls into question the growing use of MRIs to try to diagnose shoulder pain -- and, in turn, the growing problem of overtreatment of rotator cuff (RC) abnormalities, which includes partial- and full-thickness tears as well as signs of tendinopathy (tendon swelling and thickening). "While we cannot dismiss the possibility that some RC tears may contribute to shoulder symptoms, our findings indicate that we are currently unable to distinguish clinically meaningful MRI abnormalities from incidental findings," the study authors concluded.

The world is closer than thought to a "point of no return" after which runaway global heating cannot be stopped, scientists have said. From a report: Continued global heating could trigger climate tipping points, leading to a cascade of further tipping points and feedback loops, they said. This would lock the world into a new and hellish "hothouse Earth" climate far worse than the 2-3C temperature rise the world is on track to reach.

The climate would also be very different to the benign conditions of the past 11,000 years, during which the whole of human civilisation developed. At just 1.3C of global heating in recent years, extreme weather is already taking lives and destroying livelihoods across the globe. At 3-4C, "the economy and society will cease to function as we know it," scientists said last week, but a hothouse Earth would be even more fiery. The public and politicians were largely unaware of the risk of passing the point of no return, the researchers said.

The group said they were issuing their warning because while rapid and immediate cuts to fossil fuel burning were challenging, reversing course was likely to be impossible once on the path to a hothouse Earth, even if emissions were eventually slashed. It was difficult to predict when climate tipping points would be triggered, making precaution vital, said Dr Christopher Wolf, a scientist at Terrestrial Ecosystems Research Associates in the US. Wolf is a member of a study team that includes Prof Johan Rockstrom at the Potsdam Institute for Climate Impact Research in Germany and Prof Hans Joachim Schellnhuber at the International Institute for Applied Systems Analysis in Austria.

An anonymous reader shares a report: The Food and Drug Administration has refused to start a review of Moderna's application for its experimental flu shot, the company announced Tuesday, in another sign of the Trump administration's influence on tightening vaccine regulations in the U.S. Moderna said the move is inconsistent with previous feedback from the agency from before it submitted the application and started phase three trials on the shot, called mRNA-1010. The drugmaker said it has requested a meeting with the FDA to "understand the path forward."

Moderna noted that the agency did not identify any specific safety or efficacy issues with the vaccine, but instead objected to the study design, despite previously approving it. The company added that the move won't impact its 2026 financial guidance. Moderna's jab showed positive phase three data last year, meeting all of the trial goals. At the time, Moderna said the stand-alone flu shot was key to its efforts to advance a combination vaccine targeting both influenza and Covid-19.

An anonymous reader shares a report: The most seductive narrative in American work culture right now isn't that AI will take your job. It's that AI will save you from it. That's the version the industry has spent the last three years selling to millions of nervous people who are eager to buy it. Yes, some white-collar jobs will disappear. But for most other roles, the argument goes, AI is a force multiplier. You become a more capable, more indispensable lawyer, consultant, writer, coder, financial analyst -- and so on. The tools work for you, you work less hard, everybody wins.

But a new study published in Harvard Business Review follows that premise to its actual conclusion, and what it finds there isn't a productivity revolution. It finds companies are at risk of becoming burnout machines.

As part of what they describe as "in-progress research," UC Berkeley researchers spent eight months inside a 200-person tech company watching what happened when workers genuinely embraced AI. What they found across more than 40 "in-depth" interviews was that nobody was pressured at this company. Nobody was told to hit new targets. People just started doing more because the tools made more feel doable. But because they could do these things, work began bleeding into lunch breaks and late evenings. The employees' to-do lists expanded to fill every hour that AI freed up, and then kept going.

Deepfake fraud has gone "industrial," an analysis published by AI experts has said. From a report: Tools to create tailored, even personalised, scams -- leveraging, for example, deepfake videos of Swedish journalists or the president of Cyprus -- are no longer niche, but inexpensive and easy to deploy at scale, said the analysis from the AI Incident Database.

It catalogued more than a dozen recent examples of "impersonation for profit," including a deepfake video of Western Australia's premier, Robert Cook, hawking an investment scheme, and deepfake doctors promoting skin creams. These examples are part of a trend in which scammers are using widely available AI tools to perpetuate increasingly targeted heists. Last year, a finance officer at a Singaporean multinational paid out nearly $500,000 to scammers during what he believed was a video call with company leadership. UK consumers are estimated to have lost $12.86bn to fraud in the nine months to November 2025.

"Capabilities have suddenly reached that level where fake content can be produced by pretty much anybody," said Simon Mylius, an MIT researcher who works on a project linked to the AI Incident Database. He calculates that "frauds, scams and targeted manipulation" have made up the largest proportion of incidents reported to the database in 11 of the past 12 months. He said: "It's become very accessible to a point where there is really effectively no barrier to entry."

An anonymous reader shares a report: It turns out that when fewer cars spew exhaust as they drive along, air quality improves. That's the conclusion of a new study published in The Lancet Planetary Health that looked at the effect of increased numbers of both EVs and plug-in hybrids on air pollution in California. The Golden State has by far the largest number of plug-in vehicles in the United States, and they've now reached significant numbers to have a positive impact on air quality.

Between 2019 and 2023, for every 200 EVs or plug-in hybrids added, nitrogen dioxide (NO2) levels dropped 1.1%, according to the study, which used satellite data to track those levels through the unique way NO2 absorbs and reflects sunlight. NO2 can trigger asthma attacks, cause bronchitis, and increase the risk of heart disease and stroke.

Ultra-processed foods (UPFs) have more in common with cigarettes than with fruit or vegetables, and require far tighter regulation, according to a new report. The Guardian: UPFs and cigarettes are engineered to encourage addiction and consumption, researchers from three US universities said, pointing to the parallels in widespread health harms that link both.

UPFs, which are widely available worldwide, are food products that have been industrially manufactured, often using emulsifiers or artificial colouring and flavours. The category includes soft drinks and packaged snacks such as crisps and biscuits. There are similarities in the production processes of UPFs and cigarettes, and in manufacturers' efforts to optimise the "doses" of products and how quickly they act on reward pathways in the body, according to the paper from researchers at Harvard, the University of Michigan and Duke University.

They draw on data from the fields of addiction science, nutrition and public health history to make their comparisons, published on 3 February in the healthcare journal the Milbank Quarterly. The authors suggest that marketing claims on the products, such as being "low fat" or "sugar free," are "health washing" that can stall regulation, akin to the advertising of cigarette filters in the 1950s as protective innovations that "in practice offered little meaningful benefit."