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Interstellar solar sails hit a strange problem at 75% of light speed
Solar sails pushed by powerful lasers could reach incredible speeds, but relativity may eventually make the light itself work against them. At around 75% of …
Money problems may age your brain faster
Persistent financial hardship in early and middle adulthood was linked to poorer thinking skills by the 50s and more signs of brain aging later in …
Alzheimer’s may leave a mark on the brain long before plaques appear
Brain changes associated with Alzheimer’s may begin at least seven years before amyloid plaques become detectable with current PET scans. Researchers uncovered the signal by …
A coffee-table-size scorpion roamed Earth before forests existed
A meter-long scorpion with massive pincers stalked ancient Britain 415 million years ago, long before forests and the better-known age of giant insects. Its surprising …
Too much coffee may weaken bones, study finds
Following nearly 10,000 older women for 10 years, researchers found that tea drinking was associated with slightly higher hip bone density. Moderate coffee consumption did …
A search for one exotic particle uncovered two strange new structures
A search for one mysterious particle unexpectedly revealed evidence for two different structures that may belong to the bizarre family of exotic subatomic particles known …
Earth may have lost the Sun’s protective shield millions of years ago
NASA-funded studies suggest Earth’s climate has been influenced by both the Sun’s travels through dense regions of the Milky Way and the violent superflares of …
Your neighborhood in your 20s may shape your heart decades later
Where you live in early adulthood may quietly shape your heart health for decades. Researchers found that adverse neighborhood conditions were linked to a higher …
Obesity leaves a lasting memory in immune cells
Obesity appears to leave a molecular imprint on key immune cells that may persist for 5 to 10 years after weight loss. This long-lasting “obesity …
Mindfulness may lower blood pressure in just 8 weeks
Mindfulness, gratitude, and optimism training may improve blood pressure, inflammation, and other heart-health measures within just eight to 12 weeks. The strongest programs paired daily …
Scientists discover why snake embryos twist into spirals
Snake embryos begin life curled into a distinctive right-handed spiral, and scientists may finally know why. Their bodies grow faster than their guts, creating a …
Reaching 90 without dementia doesn’t mean you’re in the clear
A study of people over 90 found that dementia risk remains strongly shaped by sex, race and genetics, with women and black participants facing notably …
A massive plume deep beneath Africa is pulling the continent apart
A vast plume rising from deep inside Earth may be responsible for mysterious movements along the East African Rift. The discovery reveals how forces deep …
One of Earth’s driest places was just covered in snow
Rare storms covered huge stretches of Chile’s Atacama Desert in snow and dumped extraordinary amounts of rain on one of the driest regions on Earth. …
NASA’s Swift telescope is back, but time is running out
NASA has brought two of Swift’s telescopes back online after technical problems derailed a commercial mission intended to rescue the aging observatory by raising its …
NASA delays Crew-13 launch after leak found on SpaceX Dragon
NASA and SpaceX have delayed Crew-13 after finding an oxidizer leak in the Dragon spacecraft’s propulsion system during prelaunch preparations. Engineers are investigating the problem …
Goodbye CPAP? New sleep apnea pill cuts breathing events by 44%
A once-nightly pill cut breathing interruptions by about 44% in a major phase 3 sleep apnea trial, while improving oxygen levels and disease severity. By …
Scientists find a human-only gene that may help explain our brainpower
Scientists discovered that human microglia, immune cells that help shape developing brain circuits, can take four to eight years to mature instead of just weeks …
High blood sugar may help cancer cells hide from the immune system
Researchers discovered a possible way cancer cells hide from the immune system: they build a thick, sugar-rich coating around themselves. High blood sugar can strengthen …
Popular sweeteners may leave effects that last for generations
Two widely used zero-calorie sweeteners, sucralose and stevia, may have effects that linger far longer than the sweet taste itself. In mice, researchers found that …
One injection could keep osteoarthritis drugs working for weeks
Scientists have created an injectable gel that can remain inside arthritic joints for weeks, slowly releasing medication while also improving lubrication. The approach could make …
Your waist size may reveal health risks BMI misses
A simple waist measurement may be nearly as effective as more complicated methods for detecting unhealthy levels of body fat. Researchers also found that BMI …
Scientists discover two superconducting states hiding as one
Scientists have uncovered hidden complexity inside two ultrathin superconductors that seemed much simpler than they really are. Niobium diselenide and tantalum disulfide appeared to have …
A “quantum bath” puts quantum entanglement on autopilot
Physicists have demonstrated a new way to entangle distant quantum bits without the constant measurements and active control normally required. The team created a “quantum …
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