News

  1. 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
  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. 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

  4. Popular Boys Show Their Tough Side

    Some highly aggressive boys may become popular figures in their elementary school classes and wield much influence over classroom discipline.