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H.E.S.S. searched 546 hours of Milky Way centre data for a single-energy gamma-ray line from dark matter and found no significant signal. Its upper limits now reach the annihilation rates the collaboration says matter for WIMPs, a leading dark matter candidate.
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Growth lines and isotopes in one giant clam shell from Jiigurru put northern Great Barrier Reef summers around 1800 at 0.9 to 1.2C cooler than in 1995-2015. Winters were nearly unchanged, so this site's warming has come mostly in the hot season, on the evidence of one animal.
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Lac des Brenets on the Doubs fell 14.66 metres below normal on October 1 and is days from passing a low-water record set in 1906. A local historian says it now empties every couple of years, a pattern AFP's account supports only with residents' testimony.
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Researchers who interviewed 45 knowledge workers and read their AI chats say asking AI to challenge ideas improved performance. The study has no comparison group, so it documents the habit without measuring whether it guards against the skill erosion linked to heavy AI use.
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Chongzhao Zhang's team fed raw satellite radiance directly into aerosol simulations and cut prediction errors by about 50% in tests over China. A pretrained AI step makes the approach affordable, though the test scored aerosols against satellite data and left any forecast gains unmeasured.
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Researchers surveying 422 bird species at 1,410 sites in Borneo and Wallacea found that densely forested areas do not necessarily hold more bird diversity. They make a sound case for also judging forests by how closely related their birds are, though their public account stops short of effect sizes.
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Texas A&M's Rebecca Schlegel and colleagues, after 15 years of studies, report that people judge experiences that feel easy as more authentic. Her own wording keeps discovery and adds construction, a smaller claim than the phys.org headline's 'not hidden essence'.
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Georgia Tech-led research found rents in California and Florida ran 6.5% to 12.5% above expected levels four years after a natural disaster. The rise spread through the broader rental market, so tenants in undamaged homes faced it too.
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Federal prosecutors charged 19 people with siphoning used cooking oil from restaurant tanks in 10 states for resale. The oil is worth stealing because it can be refined into biodiesel, and the case joins a long history of discarded residues that found buyers once someone could process them.
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Surrey researchers found the anti-fibrotic compound SD-208 cuts cells' vesicle release by diverting the vesicles to lysosomes. Other drugs aimed at the same target did not copy it, so the effect looks independent of SD-208's known action.
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Aveiro and Brasilia researchers found that 377 people rating 92 snake photos gave similar-looking snakes similar fear, disgust and liking scores. Their lab treats spotting a snake and fearing it as separate steps, and this study measured only the second.
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Hubble observations suggest the core of NGC 4693, a Virgo Cluster spiral about 55 million light-years away, turns out of step with its arms and bulge. Both explanations on offer point to outside influence, though nothing reported yet settles which applies.
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Reading narrative fiction predicts verbal and language skills better than reading nonfiction, according to a review in Current Opinion in Psychology. That link is correlational, and the review's case for novels over other books is thinner than its case for reading itself.
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Researchers sorted racemic gold-silver clusters into circularly polarized emitters with chiral phosphate ligands, keeping quantum yields of 0.92 and 0.93. The brightness survives the separation intact, but the polarization gained is small and depends heavily on what surrounds the cluster.
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University of Florence geologists link quakes along nearly all of the 1,200-km Apennines to a front where deep crust peels into the mantle. One moving front would account for both the stretching and the squeezing, and for where Italy's quakes are likely to strike.
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Stephanie Cap's 1.5C scenarios for five European countries need at least 87% of people in the higher emitters to change how they live by 2030. She argues governments and businesses must make that possible.
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Crystals in lava from La Palma's 1712, 1971 and 2021 eruptions show hot mantle magma stirring a mush 18 to 25 km down days or weeks before each one. The authors say that record helps read future unrest at depths monitoring networks struggle to see, though it cannot date the next eruption.
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ASU and RRI astronomers found hydrogen glow concentrated along black hole jets after stacking the spectra of hundreds of galaxies. It places jet energy in the halo gas that feeds new stars, though any drop in star formation is still inferred.
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A biologist argues sex-related traits vary independently rather than along one line. The practical bite is in case definitions: intersex prevalence estimates span 0.2% to 6% depending on what you count.
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Ben-Gurion University researchers say disulfide bonds in two ER chaperones, DNAJB12 and DNAJB14, decide whether stressed human cells survive or self-destruct. The evidence comes from cultured human cell lines, so using the pair against chemotherapy-resistant tumours is still a hypothesis to test.
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