News

  1. Earth

    Much that glitters is really old

    New isotopic analyses of rock samples from one of the world's richest gold-mining regions suggest that the flecks of gold in those ores are more than 3 billion years old.

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  2. Health & Medicine

    New twist on a pet theory

    Growing up with cats may reduce a child's risk of developing asthma—unless the child's mother has asthma as well.

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  3. Chemistry

    Sensor sniffs out spoiled fish

    A new electronic nose detects amine compounds produced when fish decay.

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  4. Chemistry

    Air knocks the wind out of nanotubes

    Carbon nanotubes are very sensitive to oxygen, an effect that could limit their use in open-air applications.