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  1. Health & Medicine

    Compound mimics calorie restriction

    A new compound, part of a family of proteins that regulate fat transport, lowers the risk of developing heart disease and diabetes in monkeys.

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  2. Humans

    Talent Search: Student finalists’ flair for science to be rewarded

    A panel of judges announced the 40 finalists in the 61st annual Intel Science Talent Search.

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  3. Plants

    Petite pollinators: Tree raises its own crop of couriers

    A common tropical tree creates farms in its buds, where it raises its own work force of tiny pollinators.

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  4. Astronomy

    Supernova dealt deaths on Earth? Stellar blasts may have killed ancient marine life

    The explosion of nearby supernova may have caused the widespread extinction of marine life on Earth 2 million years ago.