News

  1. Animals

    Wing Ding: Bird rubs feathers for cricketlike song

    Scientists say that they have found the first vertebrate to make its courtship music in the same way as a cricket does.

    By Susan Milius
  2. Physics

    Glints from Inner Space: Sensing Earth’s hidden radioactivity

    Physicists have observed signatures of radioactivity deep within Earth, enabling measurement of planet-wide thorium and uranium quantities.

    By Peter Weiss
  3. Astronomy

    Planet potential

    Observations with the Submillimeter Array on Hawaii's Mauna Kea reveal that, despite their bombardment by a stellar bully, the disks in Orion have enough material to form planets.

    By Ron Cowen
  4. Physics

    Why isn’t the sky violet, Daddy?

    A new analysis of why the sky looks blue reveals that the reason may be the combined effects of the atmosphere and of our eyes' color-sensing apparatus.