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  1. Readers discuss cholesterol treatments and AI

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  2. Health & Medicine

    Here’s why pain might last after persistent urinary tract infections

    Experiments in mice reveal that the immune response to a UTI spurs nerve growth in the bladder and lowers the pain threshold.

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  3. Planetary Science

    The desert planet in ‘Dune’ is plausible, according to science

    Humans could live on the fictional planet Arrakis from Dune but (thankfully) no giant sandworms would menace them.

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  4. Animals

    Giant tortoise migration in the Galápagos may be stymied by invasive trees

    An invasion of Spanish cedar trees on Santa Cruz Island may block the seasonal migration routes of the island's giant tortoise population.