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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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Scientists compared dinosaurs to mammals for decades but missed this key difference11:13 Baby dinosaurs weren’t coddled like lion cubs or elephant calves—they were more like prehistoric latchkey kids. New research suggests that young dinosaurs quickly struck out on their own, forming kid-only groups and surviving without much parental help, while their massive parents lived entirely different lives. Because juveniles and adults ate different foods, faced different predators, and move… New engine uses the freezing cold of space to generate power at night11:13 Engineers at UC Davis have built a remarkable device that creates power at night by tapping into something we rarely think about: the vast cold of outer space. Using a special type of Stirling engine, the system links the warmth of the ground to the freezing depths above us, generating mechanical energy simply from the natural temperature difference after sunset. Green hydrogen has a hidden problem and scientists may have fixed it6:16 Green hydrogen could be a game-changer for the clean energy transition—but right now, it’s too expensive and still relies on harmful “forever chemicals.” A new EU-backed project called SUPREME aims to fix that by reinventing how hydrogen is made. Led by the University of Southern Denmark with partners across Europe, researchers are developing a PFAS-free electrolysis system that slashes the use o… PFAS found in most americans linked to rapid biological aging6:16 “Forever chemicals” known as PFAS have quietly infiltrated everything from nonstick pans to food packaging—and now new research suggests some of them may be speeding up the aging process itself. In a nationally representative U.S. study, two lesser-known PFAS compounds, PFNA and PFOSA, were found in 95% of participants and strongly linked to faster biological aging in men aged 50 to 64. Researchers unlock hidden dimensions inside a single photon18:51 Researchers have discovered new ways to shape quantum light, creating high-dimensional states that can carry much more information per photon. Using advanced tools like on-chip photonics and ultrafast light structuring, they’re pushing quantum communication and imaging into exciting new territory. Although long-distance transmission remains tricky, innovative approaches—such as topological quantu… Popular brain supplement linked to shorter lifespan in men18:51 A massive study of more than 270,000 people has uncovered a surprising link between a common amino acid and how long men live. Researchers found that higher levels of tyrosine—an amino acid found in protein-rich foods and often marketed as a focus-boosting supplement—were associated with shorter life expectancy in men, potentially trimming nearly a year off lifespan. Antarctica just saw the fastest glacier collapse ever recorded18:51 Antarctica’s Hektoria Glacier stunned scientists by retreating eight kilometers in just two months, with nearly half of it collapsing in record time. The rapid breakup was driven by a flat, underwater bedrock surface that allowed the glacier to suddenly float and fracture from below. Satellite and seismic data captured the dramatic chain reaction in near real time. The findings raise concerns tha… Ireland’s Old Irish Goat has survived 3,000 years26.února The Old Irish Goat isn’t just part of folklore — it’s genetically linked to goats that lived in Ireland 3,000 years ago. Scientists analyzed ancient remains and discovered that today’s rare breed shares its strongest DNA ties with Late Bronze Age animals. The finding suggests an unbroken Irish lineage stretching back millennia. It also adds urgency to protecting this critically endangered survivo… Hidden architecture inside cellular droplets opens new targets for cancer and ALS26.února Biomolecular condensates were long believed to be simple liquid blobs inside cells. Researchers have now uncovered that some are actually supported by fine protein filaments forming an internal scaffold. When this structure is disrupted, cells fail to grow and divide properly. The discovery suggests scientists may one day design drugs that target condensate architecture to fight cancer and neurod… Apollo rocks reveal the Moon had brief bursts of super-strong magnetism26.února Scientists at the University of Oxford have finally settled a decades-long mystery about the Moon’s magnetic field — and it turns out both sides were right. By reanalyzing Apollo mission rocks, they discovered that the Moon did occasionally generate an incredibly powerful magnetic field, even stronger than Earth’s — but only for fleeting bursts lasting thousands of years or less. Most of the time… The more you fear aging, the faster your body may age26.února Worrying about getting older—especially fearing future health problems—may actually speed up aging at the cellular level, according to new research from NYU. In a study of more than 700 women, those who felt more anxious about aging showed signs of faster biological aging in their blood, measured using cutting-edge “epigenetic clocks.” Fears about declining health had the strongest link, while co… Popular acid reflux medication linked to anemia and bone loss26.února Popular acid reflux drugs such as Prilosec, Nexium, and Protonix may carry hidden risks when taken long term. A new study found that extended use disrupted iron and calcium levels in rats, changes associated with anemia and osteoporosis risk. Researchers also observed shifts in mineral balance across multiple organs. Experts say the medications are effective, but prolonged use without medical gui… Study finds vegetarians over 80 less likely to reach 10026.února Avoiding meat might slightly lower the odds of reaching 100 — but only for frail, underweight seniors. In very old age, staying strong and maintaining muscle matters more than long-term disease prevention. Older adults who included fish, eggs, or dairy were just as likely to become centenarians as meat eaters, suggesting that key nutrients may make the difference. The takeaway: nutrition needs ch… Massive review suggests exercise may do little for osteoarthritis pain26.února A sweeping new analysis of the evidence suggests that exercise therapy — long promoted as a first-line treatment for osteoarthritis — may offer only small and short-lived relief, and in some cases might be no better than doing nothing at all. After reviewing dozens of clinical trials involving more than 13,000 participants, researchers found that benefits for knee osteoarthritis pain were minimal… Shingles vaccine may slow biological aging and reduce inflammation26.února A shingles shot might do more than prevent a painful rash — it could actually help slow down the aging process. In a large national study of more than 3,800 Americans age 70 and older, those who received the shingles vaccine showed slower biological aging compared to those who didn’t. Researchers found lower levels of chronic inflammation and slower changes in gene activity linked to aging, sugge… |