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  1. Earth

    Clouds warm things up

    Satellite data from the last decade put hard numbers on a key and little-understood climate player.

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  2. Space

    Planet in the sky with diamonds

    Scientists have discovered a Jupiter-sized orb with a mostly carbon atmosphere 1,200 light-years distant, the first time astronomers have detected such a world.

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  3. Life

    Jigsaw genetics

    Fragments of a fetus's genome can be pieced together from the mother's blood to allow prenatal diagnosis of genetic diseases.

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  4. Health & Medicine

    New blood test may predict some heart risk

    People carrying high levels of a protein called cardiac troponin T are more likely to have heart failure or die from cardiovascular problems, two studies show.