News

  1. Tech

    Wee wires that can crawl

    Self-propelled strands of a muscle protein coated with gold offer a way to arrange and control the nanoworld.

    By Peter Weiss
  2. Animals

    When bluebirds fight, bet on the bluest

    The male bluebirds with the bluest (and most ultraviolet) plumage turned out to be the toughest competitors in a study of who won the rights to prime nest boxes.

    By Susan Milius
  3. Health & Medicine

    COX-2 inhibitor pulled off market

    Merck's recall of rofecoxib, a COX-2 inhibitor drug for arthritis, raises the question of whether similar drugs might also increase the risk of heart attack.

    By Nathan Seppa
  4. Tech

    Tracing the origin of Genesis’ crash

    The upside-down installation of four switches intended to signal the Genesis spacecraft to open its parachutes is the likely cause of the craft's crash in the Utah desert on Sept.