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- 1
NASA's Mars Sample Return mission, intended to bring rock samples collected by the Perseverance rover back to Earth, has been cancelled, according to a report in Science. The programme had faced years of cost overruns and schedule delays, with independent reviews finding its budget and timeline unrealistic. The decision leaves scientists without a near-term path to studying Martian material in Earth laboratories.
- 2Island nations refuse to give up on climate fight▼'We're not giving up': Beset by climate change, island nations act as conscience of a warming world
Small island nations, facing rising seas and intensifying storms driven by climate change, are pressing ahead with advocacy on the world stage despite their limited size and power. In an AP News report widely syndicated across US outlets, leaders of these countries describe their role as the conscience of a warming world, insisting they will not give up the fight for stronger global climate action.
- 3Trump administration backing off NIH grant order amid pushback●Update. "Trump administration backing off NIH grant order amid pushback." https://www. semafor.com/article/09/23/2026 /t
The Trump administration is retreating from a proposed executive order that would have given the White House greater control over National Institutes of Health grants, according to Semafor. The plan, which drew criticism from researchers and science advocates, is now reported to be effectively dead after widespread pushback from the scientific and medical community.
- 4California studies solar panels built over irrigation canals●What California is learning from solar panels built over irrigation canals
California is testing and evaluating solar panels installed over irrigation canals, an approach that generates renewable energy while shading water to reduce evaporation. Reporting from KQED Science details what early projects in the state are revealing about costs, water savings, and power output, and whether covering canals with solar arrays could be scaled more widely across California's water infrastructure.
- 5Nepal floods raise fears of Himalayan glacier melt disaster●Nepal Floods Himalaya पर आने वाली आफत का एलान, Glacier पिघला तो कितनी तबाही होगी? | Sciencekaari
Flooding in Nepal has renewed warnings about the Himalayas, where melting glaciers could unleash far greater destruction. Discussion focuses on what a major glacier melt would mean for downstream communities, infrastructure and hydropower, with experts framing the floods as a signal of bigger climate-driven dangers building in the mountains.
- 6Bill Gates warns AI could cause a billion deaths●Bill Gates warns AI is powerful enough to cause "a billion deaths"
Bill Gates has issued a stark warning that artificial intelligence is now powerful enough to potentially cause a billion deaths, framing catastrophic-scale risk as a real possibility rather than science fiction. The remarks have drawn wide attention and debate online, with many questioning how serious the threat is and what it means for AI regulation and safety efforts.
- 7Astronomers warn proposed 50,000 orbital mirrors would harm sky observation●"'They're saying we want to launch 50,000 mirrors by 2035,' Benvenuti said. 'That would be catastrophic for astronomy, t
Astronomer Benvenuti said plans to launch 50,000 light-reflecting mirrors into orbit by 2035 would be 'catastrophic for astronomy.' The comment came after the FCC reportedly granted approval to Reflect Orbital, a company that intends to bounce sunlight back to Earth as a commercial service. Researchers fear large numbers of bright reflective satellites would interfere with telescope observations and darken the night sky science relies on.
- 8Immigration rules pushing foreign scientists out of the U.S.●Immigration changes are driving foreign researchers to leave the U.S.
Foreign researchers are leaving the United States as immigration policy changes make it harder for them to stay and work. The report, based on a survey of scientists, points to visa uncertainty and tougher residency procedures as key factors. Commenters worry the exodus will weaken American science and drive talent to other countries competing for researchers.
- 9Trump administration moves to block restoration of climate content at historical sites▼Trump admin seeks to block restoration of climate change, diversity info at historical sites
The Trump administration is seeking to prevent the restoration of climate change and diversity-related information at US historical sites. The move suggests an effort to keep such material removed from exhibits or signage at federally maintained locations. The news has drawn attention amid broader debates over how climate science and diversity topics are handled across government institutions.
- 10
Researchers have developed the most accurate atomic clock ever built, according to a new report. The advance pushes timekeeping precision further than previous devices, a milestone relevant to navigation systems, fundamental physics tests, and the redefinition of time standards. Details of the clock's design and measured accuracy are being discussed among science and technology readers worldwide.
- 11Andrew Ng Dismisses AI Extinction Fears as Science Fiction●Andrew Ng: AI Extinction Fears Are 'Science Fiction'
AI researcher and Coursera co-founder Andrew Ng says fears that artificial intelligence could drive humanity extinct are 'science fiction'. He argues that speculation about existential AI risk distracts from concrete near-term issues such as bias, job displacement and concentration of power, and that regulators should focus on real harms of deployed systems rather than distant hypothetical scenarios.
- 12UCLA awarded $75 million in NSF grants for quantum technology▼UCLA receives $75 million in NSF grants for quantum technology
UCLA has received $75 million in grants from the National Science Foundation to advance quantum technology research. The funding will support the university's work in quantum science, a field seen as key to future computing, sensing and communications. The announcement highlights growing federal investment in quantum research at American universities.
- 13Scientists Identify Anti-Aging Treatments That Reversed Biological Age▼Scientists Put Anti-Aging Treatments to the Test – These Ones Actually Changed Biological Age
Researchers have compared anti-aging interventions to determine which ones genuinely alter biological age, the measure of how old the body functions rather than how long a person has lived. Reports highlight that only some treatments produced measurable reductions in biological age, while others showed no effect. The findings are drawing attention as interest grows in therapies that claim to slow or reverse aging.
- 14Hawaii weathers third hurricane close call this season●Hawaii is on its third close call this season. # science # climate # weather https://www. theatlantic.com/science/2026/0
Hawaii has experienced its third near-miss from a Pacific hurricane this season, according to reporting in The Atlantic. The storms have tracked close enough to the islands to raise alarms, prompting evacuations and emergency preparations even without direct landfalls. Commenters are linking the pattern to warmer ocean temperatures and are debating whether climate change is increasing hurricane threats to the islands.
- 15Physicists find gravity may be holographic, collapsing dimensions of space●Gravity seems to be holographic: physicists discover it can collapse the dimensions of space but don't yet know what tha
Physicists report new evidence that gravity behaves holographically, meaning it can collapse the dimensions of space, though the implications for reality remain unknown. The findings, reported by Quanta Magazine, touch on the idea that our three-dimensional universe may be encoded on a lower-dimensional surface. Researchers say they understand the math but not yet what it means for the nature of spacetime, and cosmologists are debating the consequences.
- 16AI researcher warns of eroding democracy, not robot hordes▼AI researcher warns of eroding democracy, not robot hoards
An AI researcher is warning that the real threat from artificial intelligence is not science-fiction robot uprisings but the gradual erosion of democracy, as automated systems and AI-driven misinformation weaken public discourse, institutions and trust in elections. The warning pushes back against sensational framings of AI risk, arguing that subtle damage to democratic processes deserves more urgent attention than Hollywood-style doomsday scenarios.
- 17Scientists plan to resurrect woolly mammoth with AI help▼Woolly mammoth to be resurrected with the help of AI: scientists
Scientists are reported to be working on bringing back the woolly mammoth, with artificial intelligence playing a role in the de-extinction effort. The claim, reported by the New York Post, suggests AI tools are being used to advance research into resurrecting the extinct species. The project would mark a major step in genetic engineering and conservation science if successful.
- 18Astronomer turns sinking Starlink satellites into planetary barometer●Astronomer watches Starlink satellites sinking to build a 'planetary barometer'
An astronomer is tracking the gradual orbital decay of Starlink satellites to measure density changes in the upper atmosphere, effectively turning the satellite constellation into a global 'planetary barometer'. As satellites sink, the drag they experience reveals how the thin air at their altitude expands and contracts with solar activity. Space scientists are discussing the approach as a clever reuse of existing mega-constellation telemetry for atmospheric research.
- 19Anthropic claims Claude AI discovered new gene-editing enzyme▼Anthropic says Claude found a new gene-editing enzyme but science isn't confirmed
Anthropic says its Claude AI helped identify a previously unknown gene-editing enzyme, a claim that would mark a notable milestone for AI in biological research. However, the finding has not yet been independently confirmed by scientists, and experts are urging caution until the work is validated through peer review or laboratory replication.
- 20AI Model Solves Physicist's Nine-Loop Problem●A Physicist Challenged AI to Solve a Nine-Loop Problem. Claude Did It.
A physicist set an AI system a notoriously difficult nine-loop problem from theoretical physics, and Claude managed to solve it. The result is drawing attention to how far large language models have come in handling complex, technical calculations once thought to be beyond their reach, and is sparking debate among researchers about AI's growing role in scientific work.
- 21New wild cat species discovered, more may follow●A new cat species was just discovered. Several more may follow
Researchers have described a new species of cat, according to a report by the conservation news outlet Mongabay, which says several additional cat species could be identified as further studies are completed. The finding suggests current classifications of wild cats may undercount true diversity. Details on where the animal was found and its traits have not been widely reported yet.
- 22
New research points to the Earth's crust actively stretching and tearing beneath the Pacific Northwest, the region sitting atop the Cascadia subduction zone. The finding has drawn attention from science readers concerned about earthquake risk in Oregon, Washington and British Columbia, and what deep tectonic activity could mean for future seismic hazards.
- 23Saudi Aramco scientists helped write key IPCC climate reports●Saudi oil scientists ended up working on most important climate reports
Saudi oil scientists, including staff linked to Aramco, have ended up contributing to the IPCC's most important climate reports, the Guardian reports. The revelation raises questions about fossil fuel industry influence over the scientific assessments that underpin global climate policy, and critics argue that oil-producing states have gained outsized sway over how climate science is framed and communicated to governments.
- 24Study Links Bone Density to Brain Aging●Researchers Find a Surprising Link Between Bone Density and Brain Aging https:// scitechdaily.com/researchers-f ind-a-su
Researchers report a surprising connection between bone density and brain aging, according to a new study covered by SciTechDaily. The finding suggests skeletal health may be tied to how the brain ages, a link that could shape future research into dementia and osteoporosis. Science commentators are sharing the study, with many noting it challenges the usual separation between bone and brain research.
- 25
Physicists have reportedly achieved an experimental confirmation of a quantum prediction first made in 1931, closing a nine-decade gap between theory and observation. The advance is being covered by science outlets, though details of which prediction was confirmed and by which research team remain unclear from available reports.
- 26Insomnia Treatment May Slow Biological Aging●One Treatment For Insomnia May Actually Slow Biological Aging
A treatment for insomnia may do more than improve sleep: it could also slow biological aging, according to recent reporting on the science. The suggestion that a therapy targeting poor sleep might influence aging at the cellular level has caught attention, linking two major health concerns — sleep quality and longevity — in a single finding.
- 27Anthropic reports first AI-driven discovery from its new biotech lab▼# Anthropic meldet erste KI-basierte Entdeckung aus neuem Biotech-Labor - t3n https:// t3n.de/news/nach-analyse-von-d na
Anthropic says its Claude AI model has independently discovered a new enzyme system after analysing DNA databases, marking the first discovery to come out of the company's newly established biotech laboratory. The announcement is being shared widely in German-language tech and science circles, with commentators framing it as a milestone for AI-assisted biological research.
- 28Terry Tao Announces Advisory Group on Mathematics and AI●The Advisory Group on Mathematics and Artificial Intelligence
Mathematician Terence Tao has announced the formation of an Advisory Group on Mathematics and Artificial Intelligence, publishing the news on his personal blog. The group is intended to examine how AI is reshaping mathematical research and to advise the community on its use. The announcement is drawing wide attention among mathematicians and technologists debating AI's growing role in fundamental science.
- 29Unmanned 'robust little' vessel sets off on 22,000km Antarctica climate mission●‘Robust little’ vessel begins treacherous 22,000km journey around # Antarctica in the name of # climate science https://
A saildrone, an unmanned, hurricane-proof research vessel, has begun a roughly 22,000km circumnavigation of Antarctica, departing from Hobart. The voyage aims to gather climate science data from some of the world's most dangerous waters, where few crewed ships can operate. Observers are sharing the story, impressed that a small robotic craft is attempting a route that has tested even experienced sailors.
- 30Thales, Bull and CEA team up on quantum computers for French army●#Thales #Bull #CEA #logiciel #ordinateurs #quantiques #armée #française #Thales #Bull #CEA #software #computers #quantum
French technology groups Thales and Bull, together with the Alternative Energies and Atomic Energy Commission (CEA), are reportedly developing quantum computing software intended for the French military. The partnership highlights France's push to build sovereign quantum capabilities with defence applications, and the news is circulating widely among French-speaking technology and science commentators.
- 31Molecular biologist claims one pill could reverse aging●Molecular biologist says one pill could reverse aging, but is it too good to be true?
A molecular biologist is claiming that a single pill could reverse aspects of biological aging, a statement that is drawing skepticism. Longevity science has produced promising results in animal studies, but experts caution that no proven anti-aging pill exists for humans, and sweeping claims from a single scientist tend to attract scrutiny from the research community.
- 32
The Royal Society of Chemistry has released its Science Teaching Survey 2026, which finds significant regional disparities in science education provision, described as a postcode lottery. The findings suggest that the quality of science teaching and resources available to pupils depends heavily on where they live, prompting calls for more equitable funding and support for schools.
- 33Gavin Bazunu Withdraws from Ireland Squad Over Gaza Concerns●Gavin Bazunu Withdraws from Ireland Squad Over Gaza Conscience
Republic of Ireland goalkeeper Gavin Bazunu has reportedly withdrawn from the national squad, with reports linking the decision to his conscience over the situation in Gaza. The claim is circulating widely on social media, drawing debate about players taking a stand on political and humanitarian issues and what it means for Ireland's upcoming fixtures.
- 34
Commenters argue that coverage of artificial intelligence risks is focused on speculative, science-fiction scenarios while generative AI is already causing real harm to people today. The piece pushes back on media narratives that imagine futuristic doomsday threats instead of addressing present-day problems like misinformation, exploitation, and harm from tools currently in use. The argument is sparking discussion about whether AI coverage should shift toward concrete, immediate harms.
- 35First radio waves detected from an exoplanet hint at alien auroras●First radio waves seen from an exoplanet hint at otherworldly auroras # science # astronomy https://www. sciencenews.org
Astronomers have picked up radio waves from an exoplanet for the first time, a signal that could indicate auroras similar to those seen on Earth and the solar system's giant planets. The detection opens a new way to study magnetic fields and atmospheres of planets orbiting other stars, and scientists say future observations could reveal more about potentially habitable worlds far beyond our solar system.
- 36Diet change may slow biological aging within four weeks, study suggests▼This simple diet change could slow your biological age in just four weeks, study suggests
A new study suggests that a simple dietary change could slow a person's biological age in as little as four weeks. Researchers reportedly measured reductions in markers of biological aging among participants who altered their diet, a finding now drawing attention in health and science media. The idea that eating habits can influence aging speed within weeks has sparked discussion about how far short-term nutrition changes can genuinely reverse aging measures.
- 37Scientists study whether a nuclear blast could save Earth▼Can a nuclear bomb really save Earth? Scientists are testing the unthinkable
Scientists are examining whether detonating a nuclear bomb could be used to deflect or destroy an asteroid on a collision course with Earth, an idea long explored in fiction now under serious study. French science media are discussing how such a planetary defence plan would work, the physics involved, and what testing it would actually entail.
- 38Texas urged not to keep climate change out of classrooms●Texas can’t hide from climate change by stopping students from learning about it
An editorial in Texas argues the state cannot shield itself from climate change by preventing students from learning about it. The piece, published by the San Antonio Express-News, presses back against efforts to limit or soften climate science in Texas schools, warning that ignorance will not protect the state from rising heat, drought and extreme weather already affecting the region.
- 39Inside Sandia's Z machine: nuclear science meets clean energy▼Inside Sandia’s Z machine, where nuclear war meets clean energy
The Albuquerque Journal takes readers inside Sandia National Laboratories' Z machine in New Mexico, the world's most powerful pulsed-power facility. Originally built to study materials under nuclear weapons conditions, the device is now central to research on fusion energy, exploring how the same physics that powers warheads could one day deliver clean, abundant power.
- 40arXiv Secures Multiyear Philanthropic Funding as Independent Nonprofit▼🔬 The best bytes of # science & # tech across the # fediverse “💰 arXiv receives Multiyear Philanthropic Commitments to S
arXiv, the open-access preprint server widely used in physics, mathematics and computer science, has announced multiyear philanthropic commitments to support its launch as an independent nonprofit organisation. The news is being shared across science and research communities, with supporters welcoming the funding as a boost for the long-term sustainability of open science and free access to research.