News

  1. Planetary Science

    Craft show

    The Mars Global Surveyor spacecraft recently imaged Mars Odyssey and Mars Express, marking the first time that a spacecraft orbiting a planet other than Earth has captured images of other craft circling the same planet.

    By Ron Cowen
  2. Tech

    Fields of Beams: Carbon nanotubes crop up for big-screen TV

    Carbon nanotubes serve as the electron emitters that light up the screen of a new experimental, high-definition television display.

    By Peter Weiss
  3. Health & Medicine

    Positive Jolt: Electroshock therapy may have side benefit

    People with depression have high concentrations of norepinephrine, a brain hormone, but electroshock treatment lowers these levels to the normal range.

    By Nathan Seppa
  4. Materials Science

    Tissue Tether: Improved conducting plastic could boost nerve-regeneration success

    Biomedical engineers aim to repair damaged nerves with a chemically modified conducting polymer that stimulates the growth of nerve cells.