News

  1. 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
  2. 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
  3. 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.

    By Ron Cowen
  4. Health & Medicine

    Stroke site is often not right

    Thousands of strokes in the right half of the brain may go unrecognized because their symptoms are less distinctive than those of left-side strokes.