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  1. Plants

    On hot summer days, this thistle is somehow cool to the touch

    In hot Spanish summers, the thistle Carlina corymbosa is somehow able to cool itself substantially below air temperature.

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  2. Math

    How two outsiders tackled the mystery of arithmetic progressions

    Computer scientists made progress on a decades-old puzzle in a subfield of mathematics known as combinatorics.

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  3. Plants

    Ancient trees’ gnarled, twisted shapes provide irreplaceable habitats

    Traits that help trees live for hundreds of years also foster forest life, one reason why old growth forest conservation is crucial.

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  4. Health & Medicine

    50 years ago, computers helped speed up drug discovery

    In 1974, a computer program helped researchers search for promising cancer drugs.