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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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Einstein’s “biggest blunder” may finally have an explanation16:26 Scientists have uncovered a surprising connection between quantum gravity and an exotic quantum state of matter that could explain why the universe isn’t expanding wildly fast. The study suggests that the very shape of space-time may protect the cosmological constant from disruptive quantum effects. Think you're eating healthy? You may be missing this heart-protecting nutrient16:26 Eating five servings of fruits and vegetables may not be enough if you're missing foods rich in flavanols, a group of compounds linked to better heart health. Researchers found that choices like blackberries, plums, apples, broad beans, cherries, and green tea can dramatically increase flavanol intake. Scientists expected a black hole but found a neutrino factory powered by stars16:26 A distant galaxy nicknamed Shadow Blaster may have revealed a surprising source of cosmic neutrinos: extreme star formation instead of a supermassive black hole. The discovery suggests that hidden, dust-filled starburst galaxies could account for a significant fraction of the Universe’s high-energy neutrinos. Researchers found a Wordle strategy that wins 99% of the time16:26 Researchers developed a Wordle-solving strategy that succeeds 99% of the time by focusing on information gain rather than likely answers. The method uses Shannon entropy to identify guesses that reveal the most about the hidden word. Each guess is designed to slash uncertainty and narrow the possibilities faster. The result significantly outperformed more traditional Wordle tactics. Scientists reprogram brain immune cells to fight Alzheimer’s16:25 A newly identified molecule called OLE helped restore the brain’s immune cells to a more protective state in Alzheimer’s models. The treatment reduced toxic plaque buildup and improved memory, raising hopes for a new therapeutic approach. DNA time stamps reveal the strawberry’s surprising origins16:25 Researchers have created a new way to reconstruct the evolutionary history of complex plant genomes by analyzing genetic traces left by transposable elements. The technique revealed that modern strawberries were assembled through multiple ancient genome-merging events, shedding new light on how major crop species evolved. This giant tropical fruit could help reverse gum disease damage16:25 A new biomaterial made from jackfruit latex, pomegranate peel, and simvastatin could transform the treatment of severe gum disease. Early tests suggest it not only combats infection and inflammation but may also help rebuild lost bone and tissue around teeth. SpaceX wants to build AI data centers in space. Will it work?6:55 The race to build data centers in space is gaining momentum as AI drives unprecedented demand for computing power. Orbital facilities could tap into abundant solar energy and avoid many of the environmental challenges faced on Earth. Yet space remains a harsh and expensive place to operate, with major hurdles including cooling, maintenance, radiation exposure, and orbital debris. Black hole winds may be robbing giant galaxies of their future stars6:55 Astronomers may be closing in on a long-standing cosmic mystery: why some of the universe’s biggest galaxies seem to have far fewer stars than expected. Using NASA- and JAXA-supported XRISM observations of a galaxy called NGC 4151, researchers found strong evidence that supermassive black holes can unleash powerful winds that blow away the raw material needed to make new stars. Scientists May Have Found What Really Triggers Alzheimer’s Disease6:55 Scientists may have uncovered a hidden trigger behind Alzheimer’s disease. Instead of plaques being the root cause, amyloid beta appears to interfere with tau, a protein that helps keep neurons functioning properly. This disruption could set off the damage that eventually leads to the disease’s most recognizable brain changes. Major errors found in Al Gore-founded Climate TRACE database18.června A new study from Northern Arizona University is raising red flags about a widely used global emissions database from Climate TRACE, a consortium co-founded by Al Gore. Researchers found that the database may be dramatically undercounting carbon dioxide emissions from cars and trucks in cities—by an average of 70% across 260 U.S. cities, with some cities showing gaps of more than 90%. Arizona reservoir nearly vanishes after snowpack collapse triggers massive fish kill18.června A historic lack of snow in the Gila River watershed has left Arizona’s San Carlos Reservoir less than 1% full, triggering a massive fish kill and an indefinite closure. Despite the bleak conditions, heavy summer rains could help the reservoir rebound. Ancient DNA reveals plague was already killing humans 5,500 years ago18.června Plague was already a deadly killer 5,500 years ago, long before cities, farming, or the rat-infested conditions usually linked to historic outbreaks. By analyzing ancient DNA from hunter-gatherer cemeteries in Siberia, researchers discovered early plague strains in nearly 40% of the individuals studied and found evidence of rapid family-based outbreaks that wiped out many children and young teena… Scientists discover an earthquake gate as California faults reach their highest stress levels in 1,000 years18.června A new study suggests Southern California's major fault system is more stressed than at any point in the last 1,000 years. Researchers found that the Cajon Pass, where the San Andreas and San Jacinto faults meet, could act as an “earthquake gate” that determines whether a future rupture spreads across both faults. Current conditions resemble those that preceded some of the region’s largest histori… Researchers found 8 common food additives linked to high blood pressure and heart disease18.června A major study of more than 112,000 people found that eating foods containing common preservatives may be linked to a higher risk of high blood pressure and heart-related diseases. Researchers tracked participants for up to eight years and discovered that people consuming the highest amounts of certain preservatives had significantly greater risks of hypertension, heart attack, stroke, and other c… |