News

  1. 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.

    By Susan Milius
  2. 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
  3. 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
  4. Health & Medicine

    Oxygen limits infections from surgery

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