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  1. Kissing, and missing, human cousins

    DNA paints a contested picture of Stone Age interbreeding.

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  2. Polar bears have seen hard times

    Two genetic studies extend the Arctic icon’s lineage way back.

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  3. Quantum hops

    A little closer to teleportation and new computers.

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  4. Finding new ways to spell L-I-F-E

    XNA molecules join DNA and RNA in the genetic catalog.

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  5. Prions may cause Alzheimer’s

    Similarity found with destructive protein behind mad cow.

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  6. Earth’s new neighbor looks familiar

    Planet discovered in Alpha Centauri, just a few light-years away.

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  7. Life

    Women may make new eggs

    If true, finding could lead to new fertility treatments.

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  8. Health & Medicine

    Zinc may help treat box jellyfish stings

    A zinc compound seems to counteract the deadly venom delivered by the sting of the Australian box jellyfish.

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  9. Science & Society

    Scientists take on Twitter

    Social media comes into its own as a tool and a subject for study.

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  10. Neuroscience

    Your social brain

    Nerve cells notice mistakes and learn from others’ desires.

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  11. Climate

    Climate change goes to extremes

    Some recent weird weather tied to warming.

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  12. Humans

    Bionic women (and men) get closer to reality

    Prosthetics and new therapies restore abilities to move, see, walk.

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