Late Tuesday afternoon, the White House confirmed that it would not proceed with laying off more than 1,000 probationary employees at NASA. "NASA had sought exemptions for all of these employees, who comprise about 6 percent of NASA's workforce," notes Ars Technica. "The Trump administration has sought to fire federal employees at several federal agencies who are in the 'probationary' period of their employment. This includes new hires within the last one or two years or long-time employees who have moved into or been promoted into a new position." From the report: It was not immediately clear why. A NASA spokesperson in Washington, DC, offered no comment on the updated guidance. Two sources indicated that it was plausible that private astronaut Jared Isaacman, whom President Trump has nominated to lead the space agency, asked for the cuts to be put on hold.

Although this could not be confirmed, it seems reasonable that Isaacman would want to retain some control over where cuts at the agency are made. Firing all probationary employees -- which is the most expedient way to reduce the size of government -- is a blunt instrument. It whacks new hires that the agency may have recruited for key positions, as well as high performers who earned promotions.

The reprieve in these terminations does not necessarily signal that NASA will escape significant budget or employment cuts in the coming months. The administration could still seek to terminate probationary employees. In addition, Ars reported earlier that directors at the agency's field centers have been told to prepare options for a "significant" reduction in force in the coming months. The scope of these cuts has not been defined, and it's likely they would need to be negotiated with Congress.

An anonymous reader quotes a report from Ars Technica: Astronomers have detected over 5,800 confirmed exoplanets. One extreme class is ultra-hot Jupiters, of particular interest because they can provide a unique window into planetary atmospheric dynamics. According to a new paper published in the journal Nature, astronomers have mapped the 3D structure of the layered atmosphere of one such ultra-hot Jupiter-size exoplanet, revealing powerful winds that create intricate weather patterns across that atmosphere. A companion paper published in the journal Astronomy and Astrophysics (PDF) reported on the unexpected identification of titanium in the exoplanet's atmosphere as well. [...]

This latest research relied on observational data collected by the European South Observatory's (ESO) Very Large Telescope, specifically, a spectroscopic instrument called ESPRESSO that can process light collected from the four largest VLT telescope units into one signal. The target exoplanet, WASP-121b -- aka Tylos -- is located in the Puppis constellation about 900 light-years from Earth. One year on Tylos is equivalent to just 30 hours on Earth, thanks to the exoplanet's close proximity to its host star. Since one side is always facing the star, it is always scorching, while the exoplanet's other side is significantly colder.

Those extreme temperature contrasts make it challenging to figure out how energy is distributed in the atmospheric system, and mapping out the 3D structure can help, particularly with determining the vertical circulation patterns that are not easily replicated in our current crop of global circulation models, per the authors. For their analysis, they combined archival ESPRESSO data collected on November 30, 2018, with new data collected on September 23, 2023. They focused on three distinct chemical signatures to probe the deep atmosphere (iron), mid-atmosphere (sodium), and shallow atmosphere (hydrogen). "What we found was surprising: A jet stream rotates material around the planet's equator, while a separate flow at lower levels of the atmosphere moves gas from the hot side to the cooler side. This kind of climate has never been seen before on any planet," said Julia Victoria Seidel of the European Southern Observatory (ESO) in Chile and the Observatoire de la Cote d'Azur in France. "This planet's atmosphere behaves in ways that challenge our understanding of how weather works -- not just on Earth, but on all planets. It feels like something out of science fiction."

An anonymous reader shares a report: Later this month, Intuitive Machines, the private company behind the first commercial lander that touched down on the moon, will launch a second lunar mission from NASA's Kennedy Space Center. The plan is to deploy a lander, a rover, and hopper to explore a site near the lunar south pole that could harbor water ice, and to put a communications satellite on lunar orbit. But the mission will also bring something that's never been installed on the moon or anywhere else in space before -- a fully functional 4G cellular network.

Point-to-point radio communications, which need a clear line of sight between transmitting and receiving antennas, have always been a backbone of both surface communications and the link back to Earth, starting with the Apollo program. Using point-to-point radio in space wasn't much of an issue in the past because there never have been that many points to connect. Usually, it was just a single spacecraft, a lander, or a rover talking to Earth. And they didn't need to send much data either. "They were based on [ultra high frequency] or [very high frequency] technologies connecting a small number of devices with relatively low data throughput," says Thierry Klein, president of Nokia Bell Labs Solutions Research, which was contracted by NASA to design a cellular network for the moon back in 2020.

SCMP: Chinese scientists have developed a revolutionary repair technology that could make lithium-ion batteries last over six times longer. Announcing their discovery in the journal Nature on Wednesday, the researchers said this low-cost, eco-friendly technology could soon be ready to enter the market.

The batteries are key for many modern technologies, from smartphones to electric vehicles. However, as these batteries age, they often become less efficient -- a process that cold weather accelerates. The researchers said they could counter this problem with the "injection" of a special solution to rejuvenate "sick" batteries. At present, lithium-ion batteries rely on sophisticated materials used to generate lithium ions -- whose movement through electrolyte is key to their performance -- and then protect them to ensure a decent lifespan.

Typically these lithium ions move from the positive terminal to the negative when the battery is charging, a process which is then reversed when it is generating power. The battery is considered to have expired when the supply of lithium ions runs low -- for example some electric car batteries have a lifespan of around 1,500 charge cycles -- but other components in the battery still remain in good working order after this happens. This insight prompted the two lead researchers, Gao Yue and Peng Huisheng from Fudan University's macromolecular science department, to see if they could revive a battery by replenishing the supply of active lithium ions.

A new family of superconductors is exciting physicists. Compounds containing nickel have been shown to carry electricity without resistance at the relatively high temperature of 45 kelvin (-228C) -- and without being squeezed under pressure. Nature: Physicists at the Southern University of Science and Technology (Sustech) in Shenzhen, China, observed the major hallmarks of superconductivity in a thin film of crystals of nickel oxide, which they grew in the laboratory. They published their work in Nature on 17 February. "There's a huge hope that we could eventually raise the critical temperature and make [such materials] more useful for applications," says Dafeng Li, a physicist at the City University of Hong Kong.

Nickelates now join two groups of ceramics -- copper-based cuprates and iron-based pnictides -- as 'unconventional superconductors' that operate at room pressure and temperatures as high as 150K (-123C). This new data point could help physicists to finally explain how high-temperature superconductors work, and ultimately to design materials that operate under ambient conditions. This would make technologies, such as magnetic resonance imaging, radically cheaper and more efficient.

How unconventional superconductors operate at warmer temperatures remains largely a mystery, whereas the mechanism behind how some metals can carry electricity without resistance at colder temperatures, or extreme pressures, has been understood since 1957. The ability of the Sustech researchers to precisely engineer the material's properties is huge boon in trying to use nickelates to unravel the theory behind unconventional superconductivity, says Lilia Boeri, a physicist at the Sapienza University of Rome. "The idea that you have a system that you can sort of tune experimentally, is something quite exciting."

"A robotic lander from Texas-based Firefly Aerospace is now in orbit around the Moon," reports Spaceflight Now, "and going through its final preparations to land in the coming weeks." Its arrival comes nearly a month after the spacecraft launched onboard a Falcon 9 rocket from pad 39A at NASA's Kennedy Space Center. This is the third mission launched as part of the agency's Commercial Lunar Payload Services (CLPS) program, an initiative designed to bring science and technology demonstrations to the Moon at a cheaper cost...

Manifested on this lander are 10 NASA payloads, which cover a range of objectives. Those include the Lunar Instrumentation for Subsurface Thermal Exploration with Rapidity (LISTER) instrument, which will drill between 2- to 3-meters into the Moon's surface to study the heat flow; and the Stereo Cameras for Lunar Plume-Surface Studies (SCALPSS) 1.1 instrument, which will use a series of cameras to capture the plume generated at landing to help create a three-dimensional model... "We saw that for the type of advanced scientific or engineering measurements we wanted to make, the instruments were small enough and compact enough that we could actually fly 10," [said Joel Kearns, deputy associate administrator for Exploration in NASA's Science Mission Directorate], "if someone could actually schedule them to get all of their operations done over the 14 Earth day lunar daytime."

Firefly Aerospace ended up winning that bid and carries with it the most NASA instruments manifested on a single Commercial Lunar Payload Services lander so far.
Friday on X.com Firefly Aerospace wished a happy Valentine's Day to "all those on Earth who dare to Dream Big."

"Blue Ghost has been capturing stunning imagery of our planet throughout its journey," Spaceflight Now says in a 12-minute video.

And Friday on X.com Firefly posted Blue Ghost's first spectacular shots of the moon as it approaches — along with its special message for Valentine's Day. "I love you to the Moon, but not back — I'm staying there."

"What if time is not as fixed as we thought?" That's the question raised in an announcement from the University of Surrey.

"Imagine that instead of flowing in one direction — from past to future — time could flow forward or backward due to processes taking place at the quantum level." This is the thought-provoking discovery made by researchers at the University of Surrey, as a new study reveals that opposing arrows of time can theoretically emerge from certain quantum systems. For centuries, scientists have puzzled over the arrow of time — the idea that time flows irreversibly from past to future. While this seems obvious in our experienced reality, the underlying laws of physics do not inherently favour a single direction. Whether time moves forward or backwards, the equations remain the same....

This discovery provided a mathematical foundation for the idea that time-reversal symmetry still holds in open quantum systems — suggesting that time's arrow may not be as fixed as we experience it... The research offers a fresh perspective on one of the biggest mysteries in physics. Understanding the true nature of time could have profound implications for quantum mechanics, cosmology and beyond.
The university's announcement includes this quote from co-author Thomas Guff, a research fellow in quantum thermodynamics.

"The surprising part of this project was that even after making the standard simplifying assumption to our equations describing open quantum systems, the equations still behaved the same way whether the system was moving forwards or backwards in time. When we carefully worked through the maths, we found this behaviour had to be the case because a key part of the equation, the 'memory kernel,' is symmetrical in time."

And their research reminds readers that "the fundamental laws of physics in both the classical and the quantum realms do not manifest any intrinsic arrow of time. Newton's equations are time-reversal symmetric, as well as Schrödinger's equation. As a consequence, backward-in-time motion is equally possible as forward-in-time motion... Our findings are consistent with the second law of thermodynamics and emphasise the distinction between the concepts of irreversibility and time-reversal symmetry."

Can the iPhone, AirPods, or the Apple Watch play a role in improving health? Apple says they want to find out.

"In medical research, discoveries are often limited by the number of participants who can be recruited, the amount of data that can be captured, and the duration of a given study," the company said in a blog post this week. "But Apple devices expand the possibilities..." This new longitudinal, virtual study aims to understand how data from technology — including Apple and third-party devices — can be used to predict, detect, monitor, and manage changes in participants' health. Additionally, researchers will explore connections across different areas of health.
CNBC reports: The new study will likely influence future product development. Apple CEO Tim Cook previously said he believes health features will be the company's "most important contribution to mankind...."

The Apple Health Study will be available through the company's Research app, and participation is voluntary. Users will select each data type they are willing to share with researchers, and they can stop sharing or completely discontinue their participation at any time. Apple has no access to participants' identifiable information, the company said... The project will last at least five years and may expand beyond that.
A Harvard Medical School professor and cardiologist — also a principal investigator on the Apple Health Study — says "We've only just begun to scratch the surface of how technology can improve our understanding of human health."

Last June two NASA astronauts flew to the International Space Station on the first crewed test flight of Boeing's Starliner. But they aren't stranded there, and they weren't abandoned, the astronauts reminded CNN this week in a rare space-to-earth interview: "That's been the rhetoric. That's been the narrative from day one: stranded, abandoned, stuck — and I get it. We both get it," [NASA astronaut Butch] Wilmore said. "But that is, again, not what our human spaceflight program is about. We don't feel abandoned, we don't feel stuck, we don't feel stranded." Wilmore added a request: "If you'll help us change the rhetoric, help us change the narrative. Let's change it to 'prepared and committed.'

"That's what we prefer," he said...

[NASA astronaut Suni] Williams also reiterated a sentiment she has expressed on several occasions, including in interviews conducted before she left Earth. "Butch and I knew this was a test flight," she told CNN's Cooper, acknowledging the pair has been prepared for contingencies and understood that the stay in space might be extended. "We knew that we would probably find some things (wrong with Starliner) and we found some stuff, and so that was not a surprise," she said.
When Cooper opened the interview by asking the astronauts how they're doing, Williams answers "We're doing pretty darn good, actually," pointing out they had plenty of food and great crew members. And Wilmore added that crews come to the space station on a careful cycle, and "to alter that cycle sends ripple effects all the way down the chain. We would never expect to come back just special for us or anyone unless it was a medical issue or something really out of the circumstances along those lines. So we need to come back and keep the normal cycle going..."

CNN's article notes a new announcement from NASA Tuesday that the astronauts might return a couple weeks early "after opting to change the SpaceX Crew Dragon capsule it will use." That mission's targeted launch date is now March 12.

In the meantime, Williams says in the interview, "We do have some internet connection up here, so we can get some internet live. We've gotten football. It's been this crew's go-to this past fall. Also YouTube or something like that. It's not continuous — it has chunks of time that we get it. And we use that same system also to make phone calls home, so we can talk to our families, and do videoconferences even on the weekends as well. This place is a pretty nice place to live, for the most part."

And they're also "working on with folks on the ground" to test the NASA's cube-shaped, free-flying robotic Astrobees.

A new study suggests that frequent consumption of food from plastic takeout containers significantly increases the risk of congestive heart failure due to gut biome changes that trigger inflammation and circulatory damage. The Guardian reports: The authors used a two-part approach, first looking into the frequency with which over 3,000 people in China ate from plastic takeout containers, and whether they had heart disease. They then exposed rats to plastic chemicals in water that was boiled and poured in carryout containers to extract chemicals. "The data revealed that high-frequency exposure to plastics is significantly associated with an increased risk of congestive heart failure," the authors wrote. [...] They put boiling water in the containers for one, five or 15 minutes because plastic chemicals leach at much higher rates when hot contents are placed in containers -- the study cited previous research that found as many as 4.2m microplastic particles per sq cm can leach from plastic containers that are microwaved.

The authors then gave rats the water contaminated with leachate to drink for several months, then analyzed the gut biome and metabolites in the feces. It found notable changes. "It indicated that ingestion of these leachates altered the intestinal microenvironment, affected gut microbiota composition, and modified gut microbiota metabolites, particularly those linked to inflammation and oxidative stress," the authors wrote. They then checked the rats' heart muscle tissue and found it had been damaged. The study did not find a statistical difference in the changes and damage among rats that were exposed to water that had been in contact with plastic for one minute versus five or fifteen. The study has been published in the journal Ecotoxicology and Environmental Safety.

Leveraging AI tools like RFDiffusion and PLACER, researchers were able to design a novel enzyme capable of breaking down plastic by targeting ester bonds, a key component in polyester. Ars Technica reports: The researchers started out by using the standard tools they developed to handle protein design, including an AI tool named RFDiffusion, which uses a random seed to generate a variety of protein backgrounds. In this case, the researchers asked RFDiffusion to match the average positions of the amino acids in a family of ester-breaking enzymes. The results were fed to another neural network, which chose the amino acids such that they'd form a pocket that would hold an ester that breaks down into a fluorescent molecule so they could follow the enzyme's activity using its glow.

Of the 129 proteins designed by this software, only two of them resulted in any fluorescence. So the team decided they needed yet another AI. Called PLACER, the software was trained by taking all the known structures of proteins latched on to small molecules and randomizing some of their structure, forcing the AI to learn how to shift things back into a functional state (making it a generative AI). The hope was that PLACER would be trained to capture some of the structural details that allow enzymes to adopt more than one specific configuration over the course of the reaction they were catalyzing. And it worked. Repeating the same process with an added PLACER screening step boosted the number of enzymes with catalytic activity by over three-fold.

Unfortunately, all of these enzymes stalled after a single reaction. It turns out they were much better at cleaving the ester, but they left one part of it chemically bonded to the enzyme. In other words, the enzymes acted like part of the reaction, not a catalyst. So the researchers started using PLACER to screen for structures that could adopt a key intermediate state of the reaction. This produced a much higher rate of reactive enzymes (18 percent of them cleaved the ester bond), and two -- named "super" and "win" -- could actually cycle through multiple rounds of reactions. The team had finally made an enzyme.

By adding additional rounds alternating between structure suggestions using RFDiffusion and screening using PLACER, the team saw the frequency of functional enzymes increase and eventually designed one that had an activity similar to some produced by actual living things. They also showed they could use the same process to design an esterase capable of digesting the bonds in PET, a common plastic. The research has been published in the journal Science.

Bruce66423 shares a report from The Guardian: Microscopic particles emitted from brake pads can be more toxic than those emitted in diesel vehicle exhaust, a study has found. This research shows that even with a move to electric vehicles, pollution from cars may not be able to be eradicated. The researchers found that a higher concentration of copper in some commonly used brake pads was associated with increased harmful effects on sensitive cells from people's lungs, as a result of particles being breathed in.

Exposure to pollution generated by cars, vans and lorries has been previously been linked to an increased risk of lung and heart disease. While past attention has mainly concentrated on exhaust emissions, particles are also released into the air from tyre, road and brake pad wear. These emissions are largely unregulated by legislation and the study found that these âoenon-exhaustâ pollution sources are now responsible for the majority of vehicle particulate matter emissions in the UK and parts of Europe, with brake dust the main contributor among them.

[...] The scientists examined the effects on lung health of particulate matter from four different types of brake pad with differing chemical compositions; low metallic, semi-metallic, non-asbestos organic and hybrid-ceramic. Results showed that of the four types of brake pads, non-asbestos organic pads were the most potent at inducing inflammation and other markers of toxicity, and were found to be more toxic to human lung cells than diesel exhaust particles. Ceramic pads were the second most toxic. Dr. Ian Mudway, senior lecturer at the school of public health at Imperial College London, cautioned that while the research on brake pad emissions appears sound, it is premature to conclude they are worse than diesel exhaust due to "uncontrolled variables" like brake disc types and particle composition.

Slashdot reader Bruce66423 also notes it "doesn't discuss the significance of regenerative breaking, which is a feature of at least some electric cars [that reduces brake pad wear by using the electric motor to slow down the vehicle and recover energy]."

The research has been published in the journal Particle and Fibre Technology.

China issued guidelines on Friday to promote biotech cultivation, focusing on gene-editing tools and developing new wheat, corn, and soybean varieties, as part of efforts to ensure food security and boost agriculture technology. From a report: The 2024-2028 plan aims to achieve "independent and controllable" seed sources for key crops, with a focus to cultivate high-yield, multi-resistant wheat, corn and high-oil, high-yield soybean and rapeseed varieties. The move comes as China intensifies efforts to boost domestic yields of key crops like soybeans to reduce reliance on imports from countries such as the United States amid a looming trade war.

An anonymous reader quotes a report from The Guardian: A groundbreaking NHS trial will attempt to boost patients' mood using a brain-computer-interface that directly alters brain activity using ultrasound. The device, which is designed to be implanted beneath the skull but outside the brain, maps activity and delivers targeted pulses of ultrasound to "switch on" clusters of neurons. Its safety and tolerability will be tested on about 30 patient in the 6.5 million-pound trial, funded by the UK's Advanced Research and Invention Agency (Aria).

[...] The latest trial will test a device developed by the US-based non-profit Forest Neurotech. In contrast to invasive implants, in which electrodes are inserted into a specific location in the brain, Forest 1 uses ultrasound to read-out and modify activity. Aria describes the device as "the most advanced BCI in the world" due to its ability to modify activity across multiple regions simultaneously. This widens potential future applications to a huge patient population affected by conditions such as depression, anxiety and epilepsy, which are all "circuit level" conditions rather than being localized in a specific brain region.

The NHS trial will recruit patients who, due to brain injury, have had part of their skull temporarily removed to relieve a critical buildup of pressure in the brain. This means the device can be tested without having to perform surgery. When placed beneath the skull, or in individuals with a skull defect, ultrasound can detect tiny changes in blood flow to produce 3D maps of brain activity with a spatial resolution of about 100 times that of a typical fMRI scan. The same implant can deliver focused ultrasound to mechanically nudge neurons towards firing, providing a way to remotely dial activity up at precise locations. Participants will wear the device on their scalp at the site of the skull defect for two hours. Their brain activity will be measured and researchers will test whether patients' mood and feelings of motivation can be reliably altered.

There are safety considerations, as ultrasound can cause tissue to heat up. Prof Elsa Fouragnan, a neuroscientist at the University of Plymouth, which is collaborating on the project, said: "What we're trying to minimize is heat. There's a safety and efficacy trade-off." She added that it would also be important to ensure that personality or decision-making were not altered in unintended ways -- for instance, making someone more impulsive. The study will run for three and a half years starting from March, with the first eight months focused on securing regulatory approval. If successful, Forest hopes to move into a full clinical trial for a condition such as depression. Aimun Jamjoom, a consultant neurosurgeon at the Barking, Havering and Redbridge university hospitals NHS trust, who is leading the project, said: "[T]he ability to offer a safer form of surgery is very exciting. If you look at conditions like depression or epilepsy, [up to] a third of these patients just don't get better. It's those groups where a technology like this could be a life-changing solution."

Jeff Bezos' space company Blue Origin is cutting about 10% of its workforce, a significant pullback aimed at slashing costs and refocusing resources after years of development work. From a report: The rocket and engine maker laid out the personnel shakeup during an all-hands employee meeting with Chief Executive Officer Dave Limp Thursday morning, confirming a workforce reduction first reported by Bloomberg. In a memo sent to employees, Limp said the company's growth led to "more bureaucracy and less focus" than needed after a hiring spree over the past few years.

After years of expansion bankrolled by Bezos, who started Amazon and is the world's third-richest person, Blue Origin is looking to trim manager ranks as it works to clear some $10 billion worth of launch contracts. With a staff of more than 10,000, the layoffs stand to impact over 1,000 roles.

Convicted Theranos founder, Elizabeth Holmes, had her first interview since being reported to prison in 2023, telling People magazine that she is still working on "research and inventions" in the healthcare space. Here's an excerpt from the article: Scheduled for release on April 3, 2032, Holmes says she hopes to travel with her family and to fight for reform of criminal justice system. She recently drafted an American Freedom Act bill -- a seven-page handwritten document -- to bolster the presumption of innocence and change criminal procedure. "This will be my life's work," says Holmes, adding that she is speaking out now as part of her mission to advocate on behalf of incarcerated persons and those ripped away from their children.

And, despite her global reputation as a biotech con artist who put lives at risk, she says she's continuing to write patents for new inventions and plans to resume her career in healthcare technology after her release. "There is not a day I have not continued to work on my research and inventions," she says. "I remain completely committed to my dream of making affordable healthcare solutions available to everyone."

For now, however, she is sustained by weekend visits from her family, when she can cuddle Invicta, watch William gather acorns in the prison yard and hold Evans's hand and briefly hug and kiss. (Conjugal visits are not allowed.) "It kills me to put my family through pain the way I do," she says. "But when I look back on my life, and these angels that have come into it, I can get through anything. It makes me want to fight for all of it."

Astronomers have discovered a perfect ring of light in a galaxy 590 million light-years away. "The phenomenon is known as an Einstein ring, and it was discovered circumscribing the galaxy NGC 6505 in data collected by the European Space Agency's Euclid space telescope," reports SpaceAlert. From the report: [...] In the case of the newly discovered Einstein ring, the light that encircles the near galaxy is from a more distant galaxy, sitting some 4.42 billion light-years away, whose light has been warped by the curvature of space-time around NGC 6505. It's a very lucky arrangement of objects: they are aligned in such a way that the distant galaxy's light is stretched into a perfect ring, with brighter blobs representing replicated images of the galaxy at four points around the ring.

And the closeness of NGC 6505 makes it even more astonishing. Only five other lenses have been discovered so close; simulations suggest this new lens only had a 0.05 percent chance of existing, never mind being discovered. The more distant galaxy had never been seen before; now, scientists have the perfect tool to study it in greater detail than would be possible without the lens. The research has been published in Astronomy & Astrophysics.

Longtime Slashdot reader JoeRobe writes: Scientists associated with the Kilometer Cube Neutrino Telescope, or KM3NeT, have reported detection of an ultra-high energy neutrino deep in the Mediterranean sea. The neutrino reportedly had an energy of 120 million billion electron volts (1.2x10^17 eV, or 120 PeV). This is similar to the energy of ping-pong ball traveling ~5 m/s, but all that energy was packed into a single subatomic particle. According to the New York Times, "Here, squeezed into one of the tiniest flecks of matter in our universe, that energy amounted to tens of thousands of times more than what can be achieved by the world's premier particle accelerator, the Large Hadron Collider at CERN."

According to the authors of the Nature paper, the direction of the neutrino "is compatible with the extension of the galactic interstellar medium," but they did not find any catalogued source that would produce such a high energy neutrino, within the Milky Way or from about 40 other galaxies that could be candidates.

Phys.org describes the impressive scale of the KM3NeT detector array: "It is located at 3,450 m depth, about 80 km from the coast of Portopalo di Capo Passero, Sicily. Its 700 m high detection units (DUs) are anchored to the seabed and positioned about 100 m apart. Every DU is equipped with 18 Digital Optical Modules (DOM) each containing 31 photomultipliers (PMTs). In its final configuration, ARCA will comprise 230 DUs. The data collected are transmitted via a submarine cable to the shore station at the INFN Laboratori Nazionali del Sud. The KM3NeT/ORCA (Oscillation Research with Cosmics in the Abyss) detector is optimized to study the fundamental properties of the neutrino itself. It is located at a depth of 2,450 m, about 40 km from the coast of Toulon, France. It will comprise 115 DUs, each 200 m high and spaced by 20 m. The data collected by ORCA are sent to the shore station at La Seyne Sur Mer." "This ultra-high energy neutrino may originate directly from a powerful cosmic accelerator," surmises Phys.org. "Alternatively, it could be the first detection of a cosmogenic neutrino. However, based on this single neutrino it is difficult to conclude its origin."

Children working in India's fruit and vegetable markets can perform complex mental calculations with ease, yet struggle with basic written math tests that determine their academic future, according to new research that raises troubling questions about mathematics education worldwide.

The study, published in Nature, reveals how traditional education systems are failing to tap into the mathematical talents of students who develop practical skills outside the classroom, particularly those from lower-income families. MIT economist Abhijit Banerjee, who grew up watching young market vendors deftly handle complicated transactions, led the research. His team found that while these children could rapidly perform mental arithmetic, they performed poorly on standard written assessments like long division problems.

The findings come at a critical moment when mathematics education must evolve to meet modern demands, incorporating data literacy and computational skills alongside traditional mathematics. The research points to systemic issues, including a global shortage of trained mathematics teachers and assessment systems that reward memorization over reasoning. Without addressing these challenges, researchers warn, naturally talented students from disadvantaged backgrounds may never reach their potential in fields like research, entrepreneurship, or teaching.

Microplastics can move through mice brains and block blood vessels, essentially mimicking blood clots that could potentially be fatal or otherwise disrupt brain function. From a report: The findings are detailed in a peer-reviewed paper for which researchers for the first time used real-time imaging to track bits of plastic as they moved through and accumulated in brain blood vessels. When one piece of plastic got stuck, others accumulated behind it, like a "car crash," the authors reported.

The authors then found decreased motor function in those mice exposed to microplastics, suggesting impacts on the brain. While mounting evidence has linked microplastics to neurotoxicity, the research is the first to suggest how -- it probably reduces blood flow. "This revelation offers a lens through which to comprehend the toxicological implications of microplastics that invade the bloodstream," the Peking University authors wrote.