News

  1. Animals

    Balls of Fire: Bees carefully cook invaders to death

    Honeybees that defend their colonies by killing wasps with body heat come within 5 degrees C of cooking themselves in the process.

    By Susan Milius
  2. Earth

    Dim View: Darkening skies a regional phenomenon

    The decline in the solar radiation reaching Earth's surface in the latter half of the 20th century turns out to have been mostly a regional phenomenon.

    By Sid Perkins
  3. Planetary Science

    Fresh Mars: Craft views new gullies, craters, and landslides

    A comparison of images taken just a few years apart by a Mars orbiting spacecraft reveals recent landslides, freshly carved gullies, and a 20-meter-wide crater gouged in the planet's surface no earlier than 25 years ago.