News

  1. Animals

    Cold Hamsters: Wild species boosts immunity for winter

    Hamsters that have to survive winter outdoors in Siberia rev up their immune systems, including their response to psychological stress, when days grow short.

    By Susan Milius
  2. Earth

    A Confluence of Contaminants: Streams’ organic mix may pose environmental risk

    The combined effects of at least some of several dozen organic contaminants newly identified in U.S. streams may pose risks to aquatic organisms.

    By Ben Harder
  3. Animals

    Leave It to Evolution: Duplicated gene aids odd monkey diet

    A duplicated gene that has rapidly evolved helps certain monkey species thrive on a diet of leaves.

    By John Travis
  4. Paleontology

    Old Frilly Face: Triceratops’ relative fills fossil-record gap

    Fossils of a creature the size of a Texas jackrabbit cast new light on the early evolution of a group of horned dinosaurs that include the 8-meter-long Triceratops.