Peer-reviewed, open-access multidisciplinary science journal published by the AAAS, covering research across natural and social sciences.
Kelly Graf and co-authors report a 13,800-year-old camp in interior Alaska holding the oldest known needles in the Western Hemisphere. Stone tools from the camp resemble Siberian types, a link between eastern Beringia and northeast Asia.
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Chiba University-led researchers report that restraint stress restarts joint inflammation in remission-model mice through brown fat and IL-6. Blocking beta-3 adrenergic receptors or CXCR2 prevented the flares in those mice.
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Researchers report that pollen in White Sands rock shows conifers and a lake 24,200 years ago giving way to oak and sagebrush in two millennia. The authors say the people who left the footprints kept using the area as it warmed.
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Thale cress missing parts of the DREAM complex made too little of the gene MER3 and had severely reduced fertility, a Science Advances study found. The findings may point to a conserved fertility mechanism, Phys.org reported, but the work covers one plant.
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Yale researchers report that cortisol strengthens emotional memories by changing how brain networks communicate, measured in five-second fMRI trials. Each participant was scanned once on hydrocortisone and once on placebo.
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An international team used machine learning to design 17 ductile-iron alloys; 14 had the best strength and ductility in a recycled-iron dataset. The comparison is with other recycled iron, so the case for cutting primary metal use is still a projection.
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WashU researchers report in Science Advances that salt makes the clock protein TIC gather into droplets in the cell nucleus. The authors suggest TIC could become a target for breeding or gene editing in crops.
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Duncan Watts's Penn team released more than 140,000 articles from the 2024 U.S. election year, annotated by AI, with a Science Advances paper. The study found that a publisher's political lean can vary considerably by topic, a detail that gets averaged away in a single bias score.
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A Lancaster-led study finds reefs around rat-free atolls grow 1.8 to 2.5 times faster than those around rat-infested islands. The comparison is across islands and the rates are calculated potentials, so it says little about one island's recovery after eradication.
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John Innes Centre researchers engineered plant immune receptors to recognize several fungal threats at once, aimed at rice blast. Blast destroys enough rice a year to feed about 60 million people, the centre says. The receptor work itself is still experimental.
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Stanford researchers found that one week touching a healthy Pocillopora damicornis fragment started full recovery in bleached ones. The tests used fragments in lab tanks, so whether the method could rescue wild reef corals is still open.
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UCLA sociologist Jennie Brand's team reports in Science Advances that workers in declining occupations have worse upward mobility than those in growing ones. The AI-specific findings were published separately, in the American Economic Association's Papers and Proceedings.
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Edinburgh-led researchers built an algorithm that runs photonic quantum simulations on standard computers at around 5% of the compute, the team says. If the figure holds, groups without supercomputer access can test how error-prone photonic hardware behaves.
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Salk researchers report that the protein SRF3 both restores iron balance after a microbial attack and keeps a plant's immune response calibrated. The experiments started in Arabidopsis, a laboratory stand-in for crops such as wheat or corn, so the breeding payoff its authors describe is still a prospect.
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University of Kansas researchers report more than 80,000 specimens from an Alaskan ridge occupied 13,800 to 12,700 years ago. Three dated components allow a comparison across 1,100 years, if finds are reported component by component.
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Pulses designed by optimal control invert nuclear spins about 10 times faster than the conventional pulses used before, a Science Advances review reports. Whether that shortens a whole MRI or NMR scan is a separate question.
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UAB and Chalmers physicists turned the uneven field of a simple coil into a nearly uniform one using a superconducting aluminum tube and cast iron. The authors call the mathematics exact, and the prototype, cooled below 1 kelvin, matched its calculations closely.
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NUS-led researchers doped iron into nonmagnetic PtSe2 and used a gate voltage to tune its six-layer Neel temperature from about 25 K to 55 K. Order strengthens as carrier concentration falls, so a gate gives direct control in an air-stable 2D film.
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UCLA researchers report that global days of heavy rain in 2024 ran 20% above baseline, a record that topped 1983, 1998 and 2016. They tie 40% of the increase to global warming and say conditions favor another record in 2027.
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Kostya Trachenko of Queen Mary University of London argues in Science Advances that physical constants limit liquid viscosity to a range life can use. The university calls it a theoretical analysis, and its account says only that relatively small changes to some constants could alter how liquids flow.
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