Vol. 204 No. 4
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More Stories from the September 9, 2023 issue

  1. Life

    Around 13,000 years ago, humans and fire changed LA’s ecosystem forever

    Rapid drying combined with human-made fires changed Southern California forever, killing off ancient bison, dire wolves and five other megafauna species there.

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  2. Paleontology

    A colossal ancient whale could be the heaviest animal ever known

    Perucetus colossus may have tipped the scales at up to 340 metric tons, but some scientists are skeptical it could have sustained that mass.

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  3. Astronomy

    Spiral galaxies might have been lentil-shaped before becoming starry whirls

    By using black holes to track how galaxies merge and grow, an astronomer has proposed an update to the prevailing story of how galaxy shapes evolve.

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  4. Chemistry

    Magnetic ‘rusty’ nanoparticles pull estrogen out of water

    Iron oxide particles adorned with “sticky” molecules trap estrogen in water, possibly limiting the hormone’s harmful effects on aquatic life.

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  5. Animals

    Macaques in Puerto Rico learned to share shade after Hurricane Maria

    Animals that spent more time together on hot afternoons were less likely to die during the years following the storm, a new study finds.

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  6. Life

    Many frogs glow in blue light, and it may be a secret, eerie language

    Biofluorescence is far more common across frog species than previously thought. The faint twilight glow could have a role in communication or mating.

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  7. Plants

    The fastest-evolving moss in the world may not adapt to climate change

    The genus Takakia has the largest number of fast-evolving genes of any moss, a study finds. But it’s losing ground in the warming Himalayas.

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  8. Neuroscience

    Neuroscientists decoded a Pink Floyd song using people’s brain activity

    The technique could be used to improve devices that allow communication from people unable to speak.

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  9. Archaeology

    A child’s ornate necklace highlights ancient farmers’ social complexity

    The intricate necklace, reconstructed by researchers, was found on the remains of a child buried about 9,000 years ago in a Middle Eastern village.

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