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  1. Sleep disorder tied to brain ills in kids

    Researchers have linked a severe form of sleep apnea in children to brain irregularities that may contribute to learning problems.

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  2. Health & Medicine

    Herpes simplex viruses dip in prevalence

    Two viruses that cause genital herpes decreased in prevalence in the United States during the past 2 decades.

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  3. Health & Medicine

    Old drug can stop clots as well as newer drug does

    A decades-old form of the anticlotting drug heparin is as safe, as effective, and potentially as convenient to use as recent derivatives that are many times more expensive.

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  4. Earth

    Are pollutants shrinking polar bear gonads?

    New research links persistent pollutants with reproductive impairment in polar bears.