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  1. Earth

    Ozone loss made tropics rainier

    Hole over Antarctica changes weather patterns all the way to the equator, simulations suggest.

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  2. Body & Brain

    Hockey concussions take progressively longer to heal, plus rotavirus vaccines and declining stillbirths in this week’s news.

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  3. Chemistry

    Pesticides tied to lower IQ in children

    Chemicals once sprayed in homes — and still used on farms — were found to have significant effects in three studies.

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  4. Life

    Life

    Colorful duck bills hint at sperm quality, plus dangerous jellies and throwback bees in this week’s news.

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  5. Health & Medicine

    Flies on meth burn through sugar

    Cellular effects may explain why addicts often have a sweet tooth.