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  1. Psychology

    Kids’ friendships sometimes illusory

    A substantial minority of third to sixth graders think they're tight with a classmate who actually dislikes them.

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  2. Health & Medicine

    Vaccine against cocaine makes headway

    Injections gin up antibodies in mice that limit the drug's effects, a new study shows.

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  3. Life

    Plastic-lined nests keep rivals at bay

    A tangle of shopping bag scraps tells black kites in a Spanish national park that another bird’s home is not to be messed with.

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  4. Physics

    Tevatron to shut down in September

    Citing a lack of funds, the U.S. Department of Energy has essentially pulled out of the race to make the next great discovery in particle physics.