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  1. Health & Medicine

    Treat ’em

    High blood pressure often goes untreated in people 80 and over, but a new study suggests that treatment extends survival.

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  2. Life

    Leaf clippings as protein factories

    Using plants to mass produce proteins for vaccines and other purposes may soon be possible without genetically engineering whole plants.

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  3. Tech

    Down with the transistor

    A new type of electronic component could shrink computer chips and make them more powerful.

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  4. Earth

    Heat relief

    A new data-rich climate model foresees a short-term reprieve from warming for parts of western Europe and North America.