ScienceDaily |
Popis: Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution...
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What scientists found inside Titan was not what anyone expected17:42 For years, scientists thought Saturn’s moon Titan hid a global ocean beneath its frozen surface. A new look at Cassini data now suggests something very different: a thick, slushy interior with pockets of liquid water rather than an open sea. A subtle delay in how Titan deforms under Saturn’s gravity revealed this stickier structure. These slushy environments could still be promising places to sea… This “mushroom” is not a fungus, it’s a bizarre plant that breaks all the rules17:42 Balanophora is a plant that abandoned photosynthesis long ago and now lives entirely as a parasite on tree roots, hidden in dark forest undergrowth. Scientists surveying rare populations across East Asian islands uncovered how its cellular machinery shrank but didn’t disappear, revealing unexpected similarities to parasites like malaria. Some island species even reproduce without sex, cloning the… Deaths of despair were rising long before opioids17:42 Long before opioids flooded communities, something else was quietly changing—and it may have helped set the stage for today’s crisis. A new study finds that as church attendance dropped among middle-aged, less educated white Americans, deaths from overdoses, suicide, and alcohol-related disease began to rise. The trend started years before OxyContin appeared, suggesting the opioid epidemic intens… NASA just caught a rare glimpse of an interstellar comet17:41 An instrument aboard NASA’s Europa Clipper spacecraft captured rare ultraviolet observations of an interstellar comet while Earth-based telescopes were blinded by the Sun. The spacecraft’s unique position provided an unprecedented look at the comet’s dust and plasma tails from an unusual angle. Scientists detected hydrogen, oxygen, and signs of intense gas release, hinting at powerful activity af… The real reason incomes rise and why they drop17:41 Getting ahead financially is mainly about what you earn at work, not what you make from investments. Researchers found that promotions, skills, and better jobs drive most upward income movement. But when people slip backward, falling investment income is usually the main reason. Labor builds income steadily; capital is riskier and more unpredictable. Sugar-free sweeteners may still be harming your liver14:31 Sorbitol, a popular sugar-free sweetener, may not be as harmless as its label suggests. Researchers found it can be turned into fructose in the liver, triggering effects similar to regular sugar. Gut bacteria can neutralize some of it—but too much sorbitol or glucose can overwhelm that defense. The result: yet another “healthy” sweetener that may stress the liver. The 98% mystery: Scientists just cracked the code on “junk DNA” linked to Alzheimer’s19.prosince Researchers have revealed that so-called “junk DNA” contains powerful switches that help control brain cells linked to Alzheimer’s disease. By experimentally testing nearly 1,000 DNA switches in human astrocytes, scientists identified around 150 that truly influence gene activity—many tied to known Alzheimer’s risk genes. The findings help explain why many disease-linked genetic changes sit outsi… An 11-year-old needed two new organs and doctors made history19.prosince In a rare and historic achievement, Children’s Hospital Colorado successfully completed its first dual heart and liver transplant in a pediatric patient. The life-saving surgery was performed on 11-year-old Gracie Greenlaw, whose congenital heart condition eventually led to liver failure. Dozens of specialists worked together for years to prepare for a moment like this, executing a complex, 16-ho… Helping others for a few hours a week may slow brain aging19.prosince Spending a few hours a week helping others may slow the aging of the brain. Researchers found that both formal volunteering and informal acts, like helping neighbors or relatives, were linked to noticeably slower cognitive decline over time. The benefits added up year after year and didn’t require a huge time commitment. Even modest, everyday helping packed a powerful mental payoff. Ancient oceans were ruled by super predators unlike anything today19.prosince Long before whales and sharks, enormous marine reptiles dominated the oceans with unmatched power. Scientists have reconstructed a 130-million-year-old marine ecosystem from Colombia and found predators operating at a food-chain level higher than any seen today. The ancient seas were bursting with life, from giant reptiles to rich invertebrate communities. This extreme complexity reveals how inte… Neurons aren’t supposed to regrow but these ones brought back vision19.prosince After injury, the visual system can recover by growing new neural connections rather than replacing lost cells. Researchers found that surviving eye cells formed extra branches that restored communication with the brain. These new pathways worked much like the originals. The repair process, however, was slower or incomplete in females, pointing to important biological differences in recovery. A stunning new forecast shows when thousands of glaciers will vanish19.prosince New research reveals when glaciers around the world will vanish and why every fraction of a degree of warming could decide their fate. Scientists found a new way to slow aging inside cells19.prosince A small tweak to mitochondrial energy production led to big gains in health and longevity. Mice engineered to boost a protein that helps mitochondria work more efficiently lived longer and showed better metabolism, stronger muscles, and healthier fat tissue. Their cells produced more energy while dialing down oxidative stress and inflammation tied to aging. The results hint that improving cellula… Glowing neurons let scientists watch the brain work in real time19.prosince A new bioluminescent tool allows neurons to glow on their own, letting scientists track brain activity without harmful lasers or fading signals. The advance makes it possible to watch individual brain cells fire for hours, offering a clearer, deeper look at how the brain works. From biting flies to feathered dinosaurs, scientists reveal 70 new species19.prosince Researchers announced over 70 new species in a single year, including bizarre insects, ancient dinosaurs, rare mammals, and deep-river fish. Many were found not in the wild, but in museum collections, proving that major discoveries can still be hiding in plain sight. |