ScienceDaily |
Popis: Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution...
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Vivid dreams may be the secret to deeper, more restful sleep7:17 Vivid dreams might be doing more than just entertaining your mind at night. Researchers found that immersive dreaming can actually make sleep feel deeper and more refreshing, even when brain activity is high. Surprisingly, people reported their deepest sleep after intense dream experiences, not just during quiet, inactive periods. This suggests dreams may play a key role in helping us feel truly … Scientists found a bug that generates its own heat in freezing cold7:17 Snow flies have an unexpected way of surviving freezing temperatures. They produce antifreeze proteins to block ice formation and can even generate their own heat. Scientists also found that their genes are unusually unique, and they feel less cold-related pain than other insects. These combined traits let them stay active in conditions that would freeze most species. Scientists open a million-year-old time capsule beneath New Zealand6:12 Deep inside a cave, scientists uncovered fossils from 16 species, including a newfound kākāpō ancestor that may have been able to fly. These remains reveal that New Zealand’s ecosystems were constantly disrupted by volcanic eruptions and rapid climate shifts. Long before humans, waves of extinction and replacement reshaped the islands’ wildlife. It’s a rare window into a missing chapter of natura… Most mass spectrometers handle a few molecules. This new prototype handles billions6:12 A new prototype could supercharge mass spectrometry by analyzing thousands of molecules at once instead of one by one. The breakthrough boosts sensitivity enough to reveal rare, hidden molecules—potentially transforming fields like drug discovery and single-cell biology. Cold weather linked to 40,000 extra heart deaths each year in the U.S.6:12 When temperatures plunge, the risk to your heart rises dramatically. A large U.S. study shows cold weather is linked to far more cardiovascular deaths than heat, accounting for tens of thousands of extra deaths each year. Scientists found the safest temperature sits around 74°F, with danger increasing as conditions get colder—or hotter. As more people live with chronic illnesses, the threat from … Scientists discover why this deadly lung cancer keeps coming back13:10 Scientists have discovered that losing a key protein in small cell lung cancer triggers inflammation that actually helps tumors grow and spread. Even more surprising, it pushes cancer cells into a more aggressive, neuron-like state linked to relapse. 24 new deep-sea species found including a rare new branch of life13:10 In a remarkable deep-sea breakthrough, researchers have discovered 24 new species of amphipods in the Pacific’s Clarion-Clipperton Zone—including a rare, entirely new superfamily. The findings reveal previously unknown branches of life and push the boundaries of how deep these creatures are known to live. Metformin’s hidden brain pathway revealed after 60 years25.března A major discovery reveals that metformin works not just in the body, but in the brain. By switching off a key protein and activating specific neurons, the drug lowers blood sugar through a previously hidden pathway, opening new doors for diabetes treatment. Scientists just discovered bees and hummingbirds are drinking alcohol25.března Flower nectar often contains small amounts of alcohol, meaning pollinators like hummingbirds are drinking it all day long. Despite consuming human-equivalent amounts, they show no signs of intoxication—suggesting a surprising evolutionary tolerance. Astronomers solve 50-year mystery of a naked-eye star’s extreme X-rays25.března A star you can see with the naked eye has kept astronomers guessing for decades with its unusually powerful X-rays. Now, thanks to highly precise observations from Japan’s XRISM space telescope, scientists have finally uncovered the source: a hidden white dwarf companion pulling in material and generating extreme heat. This discovery not only solves a 50-year-old mystery surrounding Gamma Cassiop… Project Hail Mary meets reality: 45 planets could harbor alien life25.března Astronomers have narrowed down the cosmic search for life, identifying fewer than 50 rocky planets among thousands of known exoplanets that may have the right conditions to support life. Using new data from ESA’s Gaia mission and NASA archives, researchers pinpointed worlds in the “habitable zone,” where temperatures could allow liquid water to exist. Some of the most intriguing targets include n… Honey bees dance better with an audience25.března Honey bees don’t just perform their famous waggle dance to share directions, they actually adjust how well they dance depending on who’s watching. Researchers found that when fewer bees pay attention, the dancer becomes less precise as it moves around trying to attract an audience. This means the dance is not simply a fixed message about food location, but a flexible performance shaped by social … Why your brain may be sabotaging your balance as you age25.března Balance problems in aging and Parkinson’s may come from the body working too hard, not too little. Scientists found that the brain and muscles become overactive during even minor disturbances, yet this actually weakens balance recovery. At the same time, muscles can stiffen against each other, making movement less stable. This unexpected pattern could help predict who is more likely to fall. Most Americans don’t know this food raises colon cancer risk25.března Nearly half of Americans don’t know that processed meat increases colorectal cancer risk, according to a new poll. But once they learn the connection, most support warning labels—suggesting people want clearer information. Experts warn that awareness is lagging even among healthcare providers. The good news: diets rich in plant foods and fiber, along with healthy habits, can dramatically lower ri… First ever atomic movie reveals hidden driver of radiation damage25.března Researchers have visualized atoms in motion just before a radiation-driven decay process occurs, revealing a surprisingly dynamic scene. Instead of remaining fixed, the atoms roam and rearrange, directly influencing how and when the decay unfolds. This “atomic movie” shows that structure and motion play a central role in radiation damage mechanisms. The findings could improve our understanding of… |