News

  1. Animals

    Coati version of spoiled brats

    A biologist reports that ring-tailed coatis in Argentina have a kind of dominance structure never before documented in animals, with adolescents as a group outranking their moms and older half-sibs.

    By Susan Milius
  2. Planetary Science

    Radar for rovers on future Mars trips?

    Scientists are developing ground-penetrating radar equipment that could serve as geologists' helpers on future Mars-roving vehicles.

    By Sid Perkins
  3. Earth

    Spores record changes in ozone concentration

    Decreasing concentrations of atmospheric ozone over Antarctica have triggered changes in the spores of a plant that grows in the region, a trend that could give scientists insight into ancient extinctions.

    By Sid Perkins
  4. Planetary Science

    Enceladus: Small but feisty

    Close-up observations of Saturn's tiny moon Enceladus reveal that its south pole is hotter than its equator and that the icy satellite continues to undergo eruptions.