Six chatbots backed an existing policy about 70% of the time but the same trade-off framed as new only about 34%, while recipe and home heating advice showed no clear bias.

Single-cell sequencing of biopsies from eight people with lupus and seven healthy volunteers pointed to skin cells and a recruited immune cell type that may help explain why ultraviolet light sets off rashes and flares.

Senescent fibroblasts from aged mice failed to ramp up protein recycling, and their secretions dulled the macrophages that clear them. In mice, a drug restarting the pathway curbed senescence and, started early, lung scarring.

Mice given a synthetic cannabinoid froze more and avoided a predator odor analog, and blocking output from fear-region somatostatin neurons prevented the avoidance boost. Whether any of this explains human cannabis anxiety is untested.

A lithium-doped manganese dioxide insert kept acetic acid readings lower in a bin of rotting food for more than 40 days. Fully converting that acid to carbon dioxide took lab light nearly three times as strong as full sun.

Publication records from roughly 35,000 researchers trace Ukraine's scholarly map year by year, and the trail shows Donetsk, Luhansk and Crimea shedding scholars from 2014 onward, with wealthier regions the easiest to leave.

Chatbot answers now draw on a wider range of claims than three years ago, a new analysis of 27 systems finds, yet even the most diverse one still trails a simple web search by nearly 19 percent.

Mechanically squeezing an animal's shinbone released proteins into the bloodstream that calmed neuroinflammation, cut neuron loss and nearly quadrupled survival after severe head trauma in mice.

Marfan syndrome, the disease linked to lens dislocation and aortic rupture in humans, has now turned up in two house cat littermates carrying the first molecularly confirmed feline case.

Georgetown and University of Washington researchers found that AI video summaries omitted the crash itself in 95% of test cases, and one misleading detail was enough to warp what people remembered from an accident they had watched firsthand.

A peer-reviewed analysis of nearly 700,000 federal contracts finds cancellations under Trump's cost-cutting initiative fell hardest on counties that gave him the weakest support in 2024, even after accounting for population, income and prior federal spending.

Dog brains favor consonants when tracking words in speech, as people's do, and wild orangutan infants that watched and tried more ended up with broader diets. Two Science papers, one shared idea about learning.

Late ballot rejections nearly doubled in counties whose post offices lost their afternoon truck, a Brookings analysis of three states' 2026 primaries finds, and voters there can offset the delay by mailing a few days early.

A three-variable simulation of the primary visual cortex settled from chaotic activity into a steady rhythm once two feedback loops were added. The chaos never left the math, which hints that stable seeing is something the brain keeps working at.

Ultraviolet spectra of 29 massive O-type stars in six nearby dwarf galaxies show winds weakening as metals thin out, and hint at a sharper drop in the most metal-poor, with consequences for how astronomers read Webb's earliest galaxies.

Six children with developmental delay or autism carry the same rare change in a signaling gene. Expressed in fruit flies, the human variant switched on cell signaling without its usual trigger and disrupted neural development.

A screen of 74 genes in planarian flatworms found 10 needed to rebuild dopamine-producing neurons, work the authors say could improve stem cell therapies for brain injury or disease, though nothing has been tested beyond worms.

A 40-year Finnish study links a higher BMI in adolescence with a faster DNA-based pace of aging decades later. Genetics sharpen the signal, but the study also reveals why that does not make teenage weight a simple, standalone cause.

Computer models of head-on collisions between icy moons thickened one large moon's buried ocean for about two billion years but cost smaller moons an early one. Saturn's Rhea, a cratered test case, was not simulated.

Stanford researchers traced two separate progenitor cells in mouse embryos, one wiring up the thinking brain and the other the life support system of breathing and heartbeat, explaining why hindbrain neurons have been nearly impossible to grow in a lab.

Stanford scientists genetically stripped mouse pups of most of their cortex, then filled the gap with human stem cell derived brain tissue that wired into the mouse's nervous system and reached its spinal cord.

Mouse experiments testing rapamycin, acarbose and calorie restriction turned up twelve shared molecular changes marking a slow-aging body, potentially letting researchers screen new anti-aging drugs in months rather than years.

Stevens Neuroimaging Institute researchers built a brain scan measure that lines up blood flow with cell density layer by layer, revealing regions whose mitochondria run at higher capacity, a clue that could eventually help flag disease.

Off Australia's Gold Coast, a female humpback spent hours beside a newborn that never drew breath, repeatedly nudging it but never lifting the body toward the surface.

College students who prepare and drink from a jug of mixed liquor, sold online as a party staple, log alcohol totals far beyond an ordinary night out, and most say the risks will not stop them.

A trial adding the drug lumateperone to a faltering antidepressant improved patients' sexual function, but most of that improvement traced back to eased depression symptoms rather than any direct effect on desire, arousal or orgasm.

Asked without answer choices, a third of U.S. adults cannot name the executive, legislative, and judicial branches, the 2026 Annenberg Constitution Day Civics Survey finds. Only freedom of speech is named by more than half. Knowledge of constitutional structure runs stronger than knowledge of rights

U.S. singles have grown far more willing to date across religious, social and financial divides, new survey data show, but political party has hardened into one of the few traits many still refuse to overlook.

Nine nearby Seyfert galaxies show a repeating pattern: star forming rings, black hole radiation cones, and shock heated gas positioned at right angles between them, hinting an active black hole might help build stars as well as stop them.

Transplanting a small number of aging cells into young mice can trigger frailty and, in one study, memory loss, a new review argues, while some people born with unusually high mutation rates age completely normally.

Blood pressure, not brain scans, best predicted which patients cleared a key Alzheimer's biomarker fastest after starting lecanemab, a Korea University study of 153 patients found, months before cognitive scores showed any difference.

Three chasing satellites outperformed a much larger fleet once researchers taught them to predict where an evasive satellite would move next, cutting the numbers needed for a reliable capture in simulation.

Bacteria scooped from an ordinary compost heap outperformed relatives collected from a Kenyan landfill, a tropical zoo, and insect guts at breaking down two of the hardest plastics to recycle.

A Chalmers and Tianjin physics team compressed years of incremental quantum-state tuning into one carefully calculated pulse, speeding up a key bottleneck in fault-tolerant quantum computing roughly 1,000 times over, at least in simulation.

Phoenix logged zero out-of-season record-heat days in the 1980s and dozens by the 2020s, part of a lopsided worldwide shift pushing heat toward spring in some regions and fall in others.

A Stanford trial found teens and young adults rated social media health warnings, already mandated in four states, more discouraging than platforms' own screen-time nudges, though perceived persuasiveness doesn't guarantee anyone actually logs off.

A probabilistic model built only from GNSS data collected years before 2025 flagged the same patch of Kamchatka's megathrust that produced that year's magnitude 8.8 earthquake, though not when it would strike.

A study of seven large language models finds that an answer that looks reliable in a single exchange can become unstable after a user repeats a false claim. The results point to a neglected test of AI safety: what happens after the conversation continues.

A urine-derived bacterium converted DHEA (dehydroepiandrosterone) into testosterone in culture, and structural modeling showed how one unusually flexible enzyme could carry out multiple steps in the pathway.

Contaminated crop residue does not have to be burned or buried. A review of pyrolysis studies finds that heating it slowly, away from oxygen, can trap most heavy metals in place while producing charcoal, oil and gas with real uses.

Ultracold atoms trapped by lasers and light bouncing between mirrors formed a spin glass, a notoriously disordered magnetic state, that stored several times more memories than a standard artificial neural network of the same size.

Spin glass is a disordered magnetic state that has quietly shaped neural-network theory, optimization algorithms, and a Nobel Prize. Here is what the physics actually says, and where it's headed. In a NutshellWhat actually makes a magnet a "glass"?How did physicists find spin glass in real materials

Chimpanzee grunts, laughs and whimpers grow more population specific with age, a new study finds, hinting that experience, not genes alone, shapes primate vocal dialects.

Mice bred with tau pathology and Alzheimer's genetics lost their brain-damaging immune response when researchers deleted a scarce class of dendritic cells that operates entirely in lymph nodes outside the brain.

A global review of political polarization research finds that most studies, and nearly all the field's rigorous experiments, focus on the United States, while replications run elsewhere have sometimes found the opposite effect entirely.

UK survey data show 18-to-29-year-olds now spend up to two more hours alone each day than in 2014-15, driven mostly by remote work rather than phone use, even as loneliness rates climbed alongside them.

Epilepsy patients wearing brain electrodes revealed that a breath's rise and fall lines up with brain wave activity, but only through the nose, not a chest strap, and only in a narrow slice of recordings.

A pro-Russian hacker collective has launched more than 1,500 DDoS attacks since 2022, paying volunteers in cryptocurrency while treating each outage as a stage for undermining public trust in NATO (North Atlantic Treaty Organization) governments.