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  1. Earth

    Gunning for the Gut: Tiny particles might fight invasive zebra mussels

    By modifying a technique used to flavor foods, researchers have made a substance that poisons the zebra mussel.

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  2. Health & Medicine

    Alzheimer Clue: Busy brain connections may have downside

    Brain areas that are chronically activated have excess amyloid beta, the waxy protein associated with Alzheimer's disease.

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  3. 19626

    It seems to me irresponsible even to float the idea, as neurologist David M. Holtzman does in this article, of chemically suppressing idle thought and daydreaming in people. Who can claim a basis for clinical discrimination of “bad” idle thought and daydreaming from the “idle thought” of intuitive problem solving and poetic imagination? More of […]

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  4. Anthropology

    Stone Age Footwork: Ancient human prints turn up down under

    An ancient, dried-up lakeshore in Australia has yielded the largest known collection of Stone Age footprints, made about 20,000 years ago.