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  1. Astronomy

    Astronomers rediscover long-lost asteroid

    After 89 years of playing a cosmic version of Where's Waldo?, astronomers have located a long-lost asteroid named Albert.

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  2. Earth

    Prescribed fire burns out of control

    A fire set by the National Park Service to clear underbrush burned out of control, consuming more than 44,000 acres around Los Alamos, N.M.

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  3. Grade-Schoolers Grow into Sleep Loss

    By the sixth grade, many middle-class children may experience substantial sleep deprivation that has the potential to interfere with their ability to learn and pay attention.

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  4. Physics

    Motor design flouts physical law

    A proposed silicon device the size of a red blood cell would transform random thermal motion into useful mechanical power in violation of the second law of thermodynamics, its designers claim.