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  1. Sleepy brains take learning seriously

    After people practice a hand-eye coordination task, electrical activity in specific areas of the brain during sleep reflects neural processes involved in learning to perform that task better.

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  2. Physics

    New pass at neutrino mass

    The first experiment to create neutrinos in an accelerator and then beam them a long distance has found a long-awaited, new form of evidence that those fundamental particles weigh something.

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  3. Earth

    Cost of protecting the oceans

    Operating an extensive global network of marine parks in which fishing and habitat-stressing activities are restricted would probably be more affordable for governments than continuing to subsidize struggling fisheries at current levels.

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  4. Physics

    Why the thinnest sticky hairs rule

    The foot hairs of geckos and other creatures that can walk on ceilings may be microscopic because only such slender hairs offer optimal adhesion, regardless of shape.

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  5. Chemistry

    Connection blocker may stop viruses

    Using compounds that disrupt the interface of two viral proteins might present a novel strategy for combating viruses, a study of herpes suggests.

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  6. Health & Medicine

    Fish toxin stops cancer pain

    An experimental drug fashioned from the toxin of the puffer fish can suppress pain in cancer patients.

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  7. Health & Medicine

    New diabetes drug passes early tests

    The drug exenatide stabilizes and can reduce blood sugar in diabetes patients.

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  8. Beg Your Indulgence

    The Japanese concept of amae, in which one person presumes that another will indulgently grant a special request, may apply to different forms of behavior at different ages, even in Western countries.

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  9. Animals

    Thoroughly Modern Migrants

    Butterflies and moths are causing scientists to devise a broader definition of migration and this has raised some old questions in new ways.

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  10. Math

    Earth Hole

    What path would an object falling down a hole through Earth follow?

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  11. Humans

    From the June 16, 1934, issue

    Fanciful creations of the photographer's art, the possible addition of element 93 to the periodic table, and a Triceratops skull on display.

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  12. Backyard Nature

    Naturalist Jim Conrad has created a friendly, nicely illustrated introduction to studying nature, starting in your own backyard. The Web site features information on plants, animals, and fungi that might thrive in a backyard. It also provides basic information on ecology, geology, naming and classifying living things, and other topics. Look for the list of […]

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