News

  1. Health & Medicine

    Oxygen limits infections from surgery

    Giving patients extra oxygen during and shortly after colorectal surgery halves the incidence of infection.

    By Nathan Seppa
  2. Earth

    As globe warms, atmosphere keeps its cool

    Scientists confirm a confusing discrepancy between temperatures at Earth's surface and in its atmosphere.

    By Richard Monastersky
  3. Astronomy

    Hubble Space Telescope: Eye wide open

    Two months after the failure of a fourth gyroscope shut it down, and 3 weeks after a shuttle crew paid it a service call, the Hubble Space Telescope is back in business.

    By Ron Cowen
  4. Animals

    Butterfly ears suggest a bat influence

    Researchers have found the first bat-detecting ear in a butterfly and suggest that the threat of bats triggered the evolution of some moths into butterflies.