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Popis: Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution...
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A daily fiber supplement reduced knee arthritis pain and improved strength17:19 A prebiotic fiber supplement reduced knee osteoarthritis pain while also improving grip strength and pain sensitivity in a six-week trial. The results hint at a fascinating gut-muscle-pain connection and suggest that a simple daily supplement may be easier to maintain than digital physiotherapy. The Universe can outrun light without breaking Einstein’s rules17:19 Cosmic expansion allows distant galaxies to move away faster than light, while still letting us see ancient light they emitted when they were much closer. Eventually, accelerating expansion will push nearly every galaxy beyond our Local Group out of sight, making the Universe appear almost empty. Oral GLP-1 drugs may quiet the brain’s food craving circuit17:19 Newer oral drugs related to semaglutide medications such as Ozempic reduced pleasure-driven eating in mice by quieting a deep brain reward circuit. The finding could open new avenues for understanding food cravings and potentially treating substance use disorder. Scientists put the “recycling is a distraction” claim to the test17:19 Recycling, greener diets, and other personal climate choices do not seem to distract people from supporting major environmental reforms. A four-year study of nearly 2,800 Australians found that these habits neither increased nor reduced later political engagement. A single dose reversed autism-like symptoms in adult mice within hours17:19 Even mild inflammation during pregnancy led mouse offspring to develop persistent brain overactivity, sensory sensitivity, repetitive behaviors, and increased seizure risk. Remarkably, one dose of rapamycin improved nearly all of these problems within about two hours. The benefits were temporary, but they suggest that adult brain circuits may remain far more adaptable than previously believed. Venus may be tearing itself apart from within17:19 Scientists have uncovered new evidence that Venus may still be tearing itself apart from within. Advanced 3D simulations indicate that some of the planet's giant rift valleys formed relatively recently and could still be expanding. The results suggest Venus has a far more active interior than researchers once believed, challenging the long-held view of a geologically dormant world. Scientists discover the Sun contains 55% more silver than expected17:19 A new analysis suggests the Sun holds far more silver than earlier estimates indicated. More advanced models of the solar atmosphere raised the calculated amount by 55 percent, bringing it into much closer agreement with ancient meteorites. The technique may also help scientists track the cosmic origins of silver and other heavy elements. Superagers keep youthful memories but their DNA does not explain why17:18 Scientists expected SuperAgers might simply inherit fewer Alzheimer’s-related risks, but their genes looked much like those of typical older adults. Their extraordinary memories may instead come from still-unknown protective forces involving the brain, body, lifestyle, and environment. Coffee may help shield the liver from fat, scarring, and cancer17:18 A major long-term study linked coffee consumption with lower risks of cirrhosis, liver cancer, and death from liver disease. Coffee drinkers also showed healthier liver scans and blood protein patterns, with less fat, inflammation, and scarring. Benefits appeared even at one or two cups daily and were strongest around three to four cups. Scientists discover a compound that could supercharge aging muscle repair24.července A sulfur-based compound called LASSS appears to protect and supercharge a key protein involved in repairing damaged muscle. The discovery could eventually lead to new ways to slow muscle loss and preserve strength as people age. A new antiviral could stop measles before an outbreak takes off24.července An experimental pill prevented a measles-like virus from spreading through the air or through close contact in ferrets. It worked when given shortly before or after exposure and also shortened illness and the period when infected animals remained contagious. Researchers say the drug could one day complement vaccination and make outbreaks easier to contain. APOE2 may protect the brain from Alzheimer’s and aging24.července The longevity-linked APOE2 gene appears to protect brain cells by reducing DNA damage and helping neurons recover from stress. The finding could open a new path toward treatments that mimic APOE2’s defenses in people at higher genetic risk for Alzheimer’s. The billion-dollar problem keeping Ozempic, Wegovy, and Zepbound from patients24.července Ozempic, Wegovy, and similar drugs may deliver excellent health value, but covering them for millions of eligible patients could overwhelm insurance budgets. Researchers say better long-term support is needed and warn that low-cost compounded versions may carry serious safety risks. Ancient ape fossil in Egypt challenges the story of human origins24.července A newly identified fossil ape from northern Egypt is reshaping ideas about where the ancestors of modern apes first emerged. Analyses place it closer to living apes than any known East African species of the same age, pointing to North Africa and the Middle East as a possible birthplace and crossroads for the ape lineage that eventually produced gibbons, orangutans, gorillas, chimpanzees, and hum… Sweden’s hidden rare earth deposits could help break China’s grip24.července Sweden could become an important source of rare earth elements needed for magnets and green technologies. Instead of extracting one target metal, researchers are cataloging everything contained in Swedish mineral deposits. They will then develop magnets using those naturally available combinations, potentially reducing pollution, waste, and reliance on China. |