Uncategorized

  1. Astronomy

    Glassy galaxies

    Astronomers have found clouds of sand crystals resembling crushed glass around 21 infrared-bright galaxies.

    By Ron Cowen
  2. Animals

    Woodpecker video is challenged and defended

    The video released last spring as evidence that the ivory-billed woodpecker exists may show a common pileated woodpecker, some critics say.

    By Susan Milius
  3. Math

    Winning with a Winding Random Walk

    A two-dimensional random walk takes a frustratingly long time to complete a circuit.

    By Ivars Peterson
  4. Humans

    From the March 14, 1936, issue

    Moving a giant mirror and deadly neutron rays.

    By Science News
  5. Humans

    Explore Your Knowledge

    Test your math and science knowledge at the National Center for Education Statistics Web site.