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  1. Health & Medicine

    Streamlined polio vaccine fights outbreaks

    Back to basics: A simplified polio vaccine works better than the standard approach and overcomes an unforeseen shortcoming in the widely used oral vaccine.

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  2. Humans

    Bypassing paralyzed nerves

    Implanted electrode helps paralyzed monkey clench its forearm muscles.

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  3. Humans

    Infectious finds at ancient site

    A DNA analysis of skeletons found at a submerged Israeli site produces the earliest known evidence of human tuberculosis, now known to have existed at a 9,000-year-old farming settlement.

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  4. Life

    Grunting humans, moles scare earthworms

    Science tackles the old mystery of why worm grunters who rub a stake in the ground can catch earthworms.