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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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This wild fruit is getting a CRISPR makeover9:18 Scientists have used CRISPR to give the goldenberry a modern makeover, shrinking the plant by about a third and making it easier to farm. Goldenberries are tasty and nutritious but notoriously unruly, with bushy plants that complicate harvesting. By editing a few key genes and selectively breeding the best-tasting fruits, researchers created new varieties ready for wider cultivation. The approach… A room full of flu patients and no one got sick9:18 In a striking real-world experiment, flu patients spent days indoors with healthy volunteers, but the virus never spread. Researchers found that limited coughing and well-mixed indoor air kept virus levels low, even with close contact. Age may have helped too, since middle-aged adults are less likely to catch the flu than younger people. The results highlight ventilation, air movement, and masks … When the oceans died and life changed forever7:40 A rapid climate collapse during the Late Ordovician Mass Extinction devastated ocean life and reshuffled Earth’s ecosystems. In the aftermath, jawed vertebrates gained an unexpected edge by surviving in isolated marine refuges. Over millions of years, they diversified into many forms while competitors faded away. This ancient reset helped determine which creatures would dominate the planet ever a… 10 quintillion hydrogen bombs every second: Webb detects massive galactic eruption5:30 Scientists have discovered an enormous stream of super-hot gas erupting from a nearby galaxy, driven by a powerful black hole at its center. The jets stretch farther than the galaxy itself and spiral outward in a rare, never-before-seen pattern. NASA’s James Webb Space Telescope pierced through thick dust to reveal this violent outflow. The process is so intense it’s robbing the galaxy of star-fo… A never-before-seen creature has been found in the Great Salt Lake3:52 Scientists have identified a brand-new species of worm living in the Great Salt Lake, marking only the third known animal group able to survive its extreme salinity. The species, named Diplolaimelloides woaabi with guidance from Indigenous elders, appears to exist only in this lake. How it got there remains a mystery, with theories ranging from ancient oceans to birds transporting it across conti… 3. 7-billion-year-old rocks reveal how Earth and the Moon were born14:35 Crystals hidden in Australia’s oldest rocks have revealed new clues about how Earth and the Moon formed. The study suggests Earth’s continents didn’t begin growing until hundreds of millions of years after the planet itself formed. When scientists compared the rocks with Moon samples from the Apollo missions, they found a remarkable match. The results support the idea that a massive cosmic impact… Scientists uncover a hidden aging program in the gut that fuels cancer risk14:35 Although the gut renews itself constantly, its stem cells accumulate age-related molecular changes that quietly alter how genes are switched on and off. Scientists found that this “epigenetic drift” follows a clear pattern and appears in both aging intestines and most colon cancers. Some regions age faster than others, forming a patchwork of weakened tissue more prone to degeneration. Encouraging… Sleeping less than 7 hours could cut years off your life10.ledna Sleep isn’t just about feeling rested—it may be one of the strongest predictors of how long you live. Researchers analyzing nationwide data found that insufficient sleep was more closely tied to shorter life expectancy than diet, exercise, or loneliness. The connection was consistent year after year and across most U.S. states. The takeaway is simple but powerful: getting seven to nine hours of s… Study shows young blood can slow Alzheimer’s in mice10.ledna New research shows that aging blood can accelerate Alzheimer’s-like changes in the brain, while younger blood may offer protection. In mouse experiments, older blood worsened memory performance and increased toxic protein buildup linked to the disease. The study also uncovered widespread changes in brain proteins tied to communication and signaling. The findings point to the blood as a powerful i… A hidden loop is powering deadly pancreatic cancer10.ledna Pancreatic cancer is notoriously hard to treat, often resisting therapies that target its most common mutations. Researchers have now uncovered a hidden three-part loop that fuels tumor growth, involving the cancer drivers SRSF1, AURKA, and MYC. By targeting just one part of this loop with a specially designed molecule, they were able to shut down all three at once. The result was a dramatic loss… Betelgeuse has a hidden companion and Hubble just caught its wake10.ledna Astronomers have uncovered the long-hidden cause behind Betelgeuse’s strange behavior: a small companion star carving a visible wake through the giant’s vast atmosphere. Using nearly eight years of observations from NASA’s Hubble Space Telescope and ground-based observatories, scientists detected swirling trails of dense gas created as the companion, called Siwarha, moves through Betelgeuse’s out… Astronomers find a ghost galaxy made of dark matter10.ledna Hubble has revealed a strange cosmic object called Cloud-9, a dark matter–dominated cloud with no stars at all. Scientists believe it is a “failed galaxy,” a leftover building block from the early Universe that never lit up. Its discovery confirms long-standing theories about starless galaxies. Cloud-9 offers a rare glimpse into the dark side of cosmic evolution. This natural amino acid could help stop cavities before they start10.ledna Sugar-loving mouth bacteria create acids that damage teeth, but arginine can help fight back. In a clinical trial, arginine-treated dental plaque stayed less acidic, became structurally less harmful, and supported more beneficial bacteria. These changes made the biofilms less aggressive after sugar exposure. The results point to arginine as a promising, natural addition to cavity-prevention strat… The 4x rule: Why some people’s DNA is more unstable than others9.ledna A large genetic study shows that many people carry DNA sequences that slowly expand as they get older. Common genetic variants can dramatically alter how fast this expansion happens, sometimes multiplying the pace by four. Researchers also identified specific DNA expansions linked to severe kidney and liver disease. The findings suggest that age-related DNA instability is far more common than pre… Common food preservatives linked to higher risk of type 2 diabetes9.ledna Foods that rely heavily on preservatives may be doing more than extending shelf life. In a large study spanning more than a decade, people with the highest intake of preservative additives were far more likely to develop type 2 diabetes. The increased risk appeared across many commonly used additives found in everyday processed foods. Researchers say the findings support advice to limit highly pr… |