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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 ...

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 ...

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 . ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...