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  1. Health & Medicine

    No Scope: CT scan works as well as colonoscopy

    A computed tomography scan of the large intestine works as well as colonoscopy in detecting signs of colon cancer.

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  2. Humans

    Letters

    Letters from the Dec. 6, 2003, issue of Science News.

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  3. Humans

    Nanotech bill gives field a boost

    Congress has approved a nanotechnology act that commits $3.7 billion in funding over 4 years and calls for research on the societal, environmental, and ethical implications of this rapidly growing field.

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  4. Plants, bats magnify neurotoxin in Guam

    Researchers have found that the natural neurotoxin BMAA gets magnified as it rises through a food chain on Guam, a finding that strengthens a recent hypothesis that attempts to explain a spike in neurological disease on that island.