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  1. Health & Medicine

    Against the grains

    People on either a low-carbohydrate or Mediterranean diet fared better over two years than those on a low-fat diet.

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  2. Physics

    Seeing the smallest atom

    Electron microscopes can now image single atoms of hydrogen.

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  3. Oceans

    Death by magma

    Widespread extinctions in the world’s oceans millions of years ago may have been triggered by massive underwater volcanic eruptions that created much of the Caribbean seafloor.

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  4. Life

    HIV after DARC

    A gene variant prevalent in people of African descent increases the risk of HIV infection but also helps slow disease progression.