Feature

  1. Pushing the Mood Swings

    Social and psychological forces sway the course of manic depression.

    By Bruce Bower
  2. Health & Medicine

    The New GI Tracts

    For preventing heart disease, diets that control insulin are all the buzz.

    By Janet Raloff
  3. Materials Science

    The Buck Starts Here

    The U.S. Mint performed some neat tricks to make a golden dollar.

    By Corinna Wu
  4. Astronomy

    Less Massive than Saturn?

    Astronomers pass a milestone in the search for new worlds.

    By Ron Cowen
  5. Earth

    Greenhouse Gassed

    Scientists are discovering that more carbon dioxide in the air could spell disaster for plants and the animals that love to eat them.