News

  1. Humans

    Urine tests for cities

    Analysis of sewage gauges community-wide use of illegal drugs.

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  2. Earth

    Tiny tubes, big pollution

    Making carbon nanotubes also produces a lot of airborne carcinogens.

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  3. Light switch

    A photosensitive molecule makes switching off a gene as simple as flicking on a light.

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  4. Tech

    Corny collagen

    Corn engineered to produce collagen may someday replace slaughterhouse leftovers as a source of gelatin.

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  5. Earth

    Arctic snow was dirtier in early 1900s

    Arctic snow collects less soot now than it did a century ago, but it's still dirtier than it was before the Industrial Revolution.