News

  1. Mothers reveal their baby faces

    Mothers in different cultures use three distinctive facial expressions to communicate with their infants.

    By Bruce Bower

  2. Rats join the roster of clones

    Scientists have finally cloned the rat, setting the stage for the creation of genetically engineered rats that can be used to study many more diseases in humans.

    By John Travis
  3. Health & Medicine

    Making the heart burn

    Burning chest pain during a heart attack may stem from a protein that also responds to chili peppers.

    By John Travis
  4. Health & Medicine

    Coronary Fix: Coated inserts keep vessels unclogged

    Mesh cylinders called stents, which doctors use to prop open coronary arteries, work better when they are coated with sirolimus, a drug that inhibits the accumulation of cells along the device.