News

  1. Anthropology

    Chimps scratch out grooming requests

    Pairs of adult males in a community of wild African chimps often communicate with gestures.

    By Bruce Bower
  2. Animals

    Sharpshooter threatens Tahiti by inedibility

    A North American insect is menacing Tahitian ecosystems by getting itself killed and proving surprisingly toxic to its predators.

    By Susan Milius
  3. Health & Medicine

    Parasite can’t survive without its tail

    The protozoan that causes African sleeping sickness can't survive in the mammalian bloodstream without its long, whiplike tail.

    By Christen Brownlee
  4. Planetary Science

    Propelling Evidence: Cassini finds clues to source of Saturn’s rings

    Four propeller-shaped gaps in one of Saturn's main rings are the latest evidence that a shattered moon produced the planet's dazzling hoops.