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Vol. 207 No. 11
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November 2025 cover of Science News

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The Health Checkup

More Stories from the November 1, 2025 issue

  1. Life

    We all have a (very tiny) glow of light, no movie magic needed

    Normal cellular processes in living things — from germinating plants to our own cells — create biophotons, though escaping light isn’t visible to us.

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  2. Planetary Science

    A Mars rock analysis tool proved its mettle on a chance find from Arizona

    On Mars, the Perseverance rover found a spotted rock that could bear signs of ancient life. On Earth, a researcher used a lookalike for a dry run.

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  3. Animals

    Warm autumns could be a driver in monarch butterflies’ decline

    In the lab, higher temperatures during fall migration led monarchs to break their reproductive pause, increasing their risk of death.

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  4. Health & Medicine

    Elderly cats with dementia may hold clues for Alzheimer’s

    Immune cells in aging cat brains with amyloid beta destroy nerve endings, mimicking the progression of Alzheimer’s disease in humans.

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  5. Health & Medicine

    Chemicals in marijuana may affect women’s fertility

    THC in marijuana may help eggs become ready for fertilization. But this may come at the cost of more eggs with wrong numbers of chromosomes.

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  6. Humans

    Stopping menopausal hormones may require more bone monitoring

    Women face a small rise in fracture risk within 10 years of stopping therapy, suggesting the need for additional monitoring.

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  7. Neuroscience

    Your red is my red, at least to our brains

    Despite philosophical debates, colors like red may spark similar brain activity across individuals, new research suggests.

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  8. Life

    Horses may have become rideable with the help of a genetic mutation

    To make horses rideable during domestication, people may have inadvertently targeted a mutation in horses to strengthen their backs and their balance.

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  9. Animals

    A single protein makes lovesick flies spill their guts

    Producing a male-specific protein in digestion-related neurons may have led to the evolution of an odd “romantic” barfing behavior in one species of fruit flies.

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  10. Planetary Science

    NASA’s Webb telescope spotted a new moon orbiting Uranus

    Like Uranus's other 28 moons, the newfound object spotted by JWST will be named after a William Shakespeare or Alexander Pope character.

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  11. Space

    Astronauts need oxygen. Magnets could help

    Adding a magnet could simplify the process of producing oxygen in space, making a crewed mission to Mars more feasible.

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  12. Health & Medicine

    A cold today helps keep the COVID away

    A recent cold appears to be a defense against COVID-19 and a partial explanation for kids’ tendency toward milder coronavirus infections.

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  13. Astronomy

    Astronomers detect the brightest ever fast radio burst

    The fast radio burst came from 130 million light-years away. That proximity allowed an in-depth search for what produced the mysterious signal.

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  14. Animals

    Tiny thumbnails may be key for rodents’ global takeover

    Thumbnails might have boosted rodents’ food-handling skills, helping them thrive worldwide.

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  15. Microbes

    Antarctic lake microbes have flexible survival strategies 

    Life teems under the Antarctic ice sheet. In subglacial Lake Mercer, it is surprisingly versatile and isolated from the rest of the world.

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  16. Earth

    Useful metals get unearthed in U.S. mines, then they’re tossed

    Recovering these metals from mining by-products destined for waste sites could offset the need to import them from elsewhere or open new mines.

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  17. Archaeology

    Venice’s iconic winged lion statue originated in ancient China

    European artisans turned a Tang Dynasty tomb guardian sculpture into a symbol of medieval Venetian statehood, researchers say.

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  18. Worlds Apart Crossword

    Solve our latest interactive crossword. We'll publish science-themed crosswords and math puzzles on alternating months.

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