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  1. Materials Science

    Nanotubes: Knot just for miniature work

    A new technique can spin individual nanotubes into durable ribbons and threads visible to the naked eye.

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  2. Materials Science

    Nanotubes get as small as they can

    Two research teams have created stable carbon nanotubes with the smallest diameter that scientists believe is physically possible, at just 0.4 nanometer across.

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  3. Earth

    Can Banking Carbon Cool the Greenhouse?

    Stockpiling carbon dioxide in plants and soil may be effective only for the short term, if at all.

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  4. Humans

    Genes on Display

    DNA becomes part of the artist's palette.