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30,000-year-old DNA reveals Ice Age Europeans were far more connected than we thought

Scientists have uncovered surprising DNA evidence that Europeans living more than 30,000 years ago were connected across vast distances, challenging the idea that ancient populations remained largely isolated. Genetic clues from human remains and cave sediments reveal prehistoric migration, long-lasting communities, and survival through the harshest conditions of the Ice Age.

Science

Scientists find surprisingly little evidence that medical cannabis helps you sleep

A major new review challenges the growing enthusiasm for medical cannabis as an insomnia treatment, finding little reliable evidence that it improves sleep quality, sleep duration, or daytime functioning. Researchers caution that this doesn't mean cannabis is ineffective, only that existing studies are too weak to establish whether it works.

Science

NASA's Hubble and Webb discover ancient worlds that remember their past

NASA’s Hubble and James Webb Space Telescopes have uncovered surprising clues about the solar system’s origins by studying 27 tiny, distant objects beyond Neptune. Scientists discovered that these ancient building blocks of planets have remained remarkably unchanged for billions of years, while their unexpected sizes and numbers challenge existing theories of planet formation.

Science

Experts say high blood pressure guidelines are missing half the equation

Scientists are calling for a major rethink of how we manage high blood pressure, suggesting that eating more potassium could be just as important as cutting back on salt. A new report finds that combining increased potassium intake with reduced sodium consumption may offer greater benefits for blood pressure control than sodium reduction alone.

Science

Scientists shrink Archimedes’ screw to the size of a single molecule

Scientists have built a groundbreaking molecular motor that spins in either direction using electricity, inspired by a machine invented more than 2,000 years ago. Even more remarkably, its rotation can boost electrical conductivity by up to 100 times, potentially transforming the future of molecular electronics.

Science

The Great Barrier Reef's most notorious coral killer may actually be helping it

Crown-of-thorns starfish are notorious for devouring coral reefs, but surprising new research reveals these spiny predators may actually help reefs thrive when their populations are kept in check. Scientists studying Australia's Great Barrier Reef discovered that nearly 75% of observed starfish feeding events left behind living coral tissue, rather than destroying entire colonies. By feeding on fast-growing, dominant corals, the starfish create opportunities for slower-growing species to survive, potentially increasing coral biodiversity.

Health

Scientists discover a surprising brain benefit of eating peanuts every day

A surprising new study suggests that eating peanuts every day could help support brain health and memory in older adults. Researchers found that consuming about two servings of unsalted, skin-roasted peanuts daily for 16 weeks improved insulin responsiveness in brain regions important for memory, a function that often weakens with age and has been linked to Alzheimer's disease.

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Scientists use sound waves to deliver a new attack on deadly brain cancer

Scientists at the University of Virginia have developed a promising new strategy to fight glioblastoma, one of the deadliest and most difficult-to-treat forms of brain cancer. Their experimental approach combines focused ultrasound, tiny nanoparticles, and genetic molecules called microRNAs to attack multiple cancer-driving genes simultaneously.

Science

Ancient ape fossil in Egypt could rewrite the story of human origins

A 17- to 18-million-year-old ape fossil discovered in Egypt is challenging long-held beliefs about where the ancestors of humans and other modern apes first evolved. Scientists now suspect that North Africa and the Middle East, rather than East Africa, may have been the cradle of modern ape evolution.

Science

Scientists discover a hidden driver of high cholesterol and a way to stop it

Scientists have uncovered a hidden mechanism that allows high-cholesterol diets to undermine the body's natural cholesterol defenses, and blocking it dramatically lowered harmful LDL cholesterol in mice. Even more promising, an experimental drug targeting this pathway has already passed an early human safety trial, potentially speeding the development of a new treatment for high cholesterol.

Science

Scientists say a forgotten particle may explain why the universe exists

A mysterious particle overlooked for decades may hold the key to why matter survived the Big Bang, allowing stars, planets, and life to exist. Scientists believe this forgotten neutrino reshaped the early universe and may have left detectable gravitational wave signals that could help unlock the cosmos’s deepest mysteries.

Science

A surprising vitamin A discovery is changing what scientists know about vision

Scientists at Johns Hopkins University have uncovered a surprising process that helps humans develop sharp vision before birth, challenging decades of assumptions about how the eye forms. Using miniature human retinas grown in the lab, researchers discovered that a vitamin A derivative and thyroid hormones work together to shape the foveola, the tiny region at the center of the retina responsible for our sharpest vision.

Science

Scientists discover a bacterial defense so strange they thought it was broken

Scientists have discovered a bizarre bacterial defense system that works almost completely backward from anything seen before. Unlike typical bacterial immune systems that keep a deadly toxin under control until a virus attacks, this unusual mechanism waits until an infection begins before producing the DNA that switches on its lethal weapon. The infected bacterium then destroys itself, preventing the virus from multiplying and spreading to neighboring cells.

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Scientists discover metals that defy the deep freeze at -424°F

Scientists have discovered a surprising mechanism that allows certain metals to resist cracking at temperatures as low as -253°C (-424°F), when similar materials typically become dangerously brittle. Instead of breaking, two experimental alloys reorganize their internal structures, creating new ways to absorb stress and remain flexible.

Science

A simple blood test could reveal Alzheimer’s risk 10 years before symptoms

A major international study found that a simple blood test could help predict Alzheimer’s-related cognitive decline years before symptoms appear, with the highest-risk individuals facing a 38% chance of impairment within five years and an estimated 78% chance within 10 years. Scientists believe the discovery could pave the way for earlier intervention and future treatments designed to prevent Alzheimer’s before memory problems begin.

Science

Scientists smash oxygen nuclei to recreate matter from the Big Bang

Scientists have recreated a primordial state of matter from the dawn of the universe by colliding oxygen nuclei at nearly the speed of light. The surprising results show that this exotic substance can form in smaller, lower-energy collisions than previously demonstrated, challenging the known boundaries of early-universe physics.

Science

Scientists finally discover how a common gut bacterium can trigger colon cancer

Scientists at Johns Hopkins have uncovered a crucial missing link between a common gut bacterium and colorectal cancer, solving a mystery that has puzzled researchers for nearly two decades. The bacterium, Bacteroides fragilis, produces a toxin that damages the colon’s protective lining, triggers chronic inflammation, and promotes tumor formation.

Topic: scientists | RocksNews