News

  1. Fat Chance: Hormone boosts metabolic rate, induces weight loss in mice

    Fat cells secrete a hormone that tells the brain to boost the body's metabolic rate.

    By John Travis
  2. Health & Medicine

    Slimmer Ticks, Less Disease: Tick-semen protein is potential vaccine

    An antitick vaccine using a protein that causes female ticks to engorge on blood may control tick populations, a new study suggests.

    By Edna Francisco
  3. Astronomy

    Rare Passage: Crab’s X rays probe Titan

    Observing a rare celestial alignment, astronomers have made the first X-ray measurement of the atmosphere of Saturn's moon Titan.

    By Ron Cowen

  4. Get Mellow, Fellow: Male baboons cooperate after cultural prodding

    Researchers say they have found a troop of wild baboons in which females somehow transmit peaceful attitudes to males who transfer into the group.