Vol. 204 No. 5
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More Stories from the September 23, 2023 issue

  1. Health & Medicine

    What we still don’t know about Wegovy’s effect on strokes and heart attacks

    A clinical trial suggests that semaglutide, a drug used to treat obesity and diabetes, may protect cardiovascular health in a broad group of people.

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  2. Health & Medicine

    Health risks can persist at least 2 years after COVID-19, new data suggest

    U.S. veterans who tested positive for COVID-19 in 2020 remain at higher risk for many long COVID conditions, from heart disease to gastrointestinal issues.

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  3. Climate

    Some leaves in tropical forests may be getting too hot for photosynthesis

    Climate change may be forcing some tropical leaves to stop photosynthesis and die. It’s still unclear what effect this will have on entire forests.

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  4. Climate

    Emperor penguins lost thousands of chicks to melting ice last year

    In 2022, groups of emperor penguins in western Antarctica lost almost all their chicks to receding sea ice, signaling the threat of climate change.

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  5. Animals

    Adult corals have been safely frozen and revived for the first time

    Chunks of living corals could be frozen for safekeeping and revived later to restore reef ecosystems that are withering in warming seas.

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  6. Astronomy

    Active supermassive black holes may be rarer than previously thought

    A dearth of rapidly growing black holes in new James Webb telescope data raises questions about how these behemoths grow and influence their galaxies.

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  7. Archaeology

    Pre-Inca people stomped salutes to their thunder god on a special dance floor

    Excavation of a drumlike platform in the Andes turned up a structure seemingly designed to absorb shocks and emit resonant sounds when stomped upon.

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  8. Psychology

    An apology to Indigenous communities sparks a mental health rethink

    The leading U.S. psychological association pledged to embrace Indigenous approaches to healing, which requires rethinking how to address mental health.

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  9. Physics

    50 years ago, scientists dreamed of lasers that could kick off nuclear fusion

    In the 1970s, lasers that could initiate nuclear fusion were a distant dream. Now, scientists are using such lasers to achieve fusion “ignition.”

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  10. Artificial Intelligence

    How artificial intelligence sharpens blurry thermal vision images

    A thermal imaging technique uses a special camera and AI to create clear images and accurately gauge distances of objects, even in pitch-blackness

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  11. Physics

    How to run a marathon in under two hours

    Running between other people reduces air resistance. A new study identifies optimal positioning of such drafting formations. Watch out, marathon records.

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  12. Space

    Recoiling black holes could move at nearly one-tenth the speed of light

    Knowing black holes’ speed after being kicked by gravitational waves can reveal how much energy converging black holes can release.

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