Uncategorized

  1. Health & Medicine

    Brain Attack

    Although they have explored many promising ideas, scientists are finding it difficult to develop new treatments to limit the damage caused by ischemic strokes.

    By Andreas von Bubnoff
  2. Astronomy

    Passages

    By observing the minieclipses known as transits, when a distant planet passes in front of its parent star, astronomers are learning more about the size, composition, and temperature of exoplanets.

    By Ron Cowen
  3. Humans

    Letters from the July 14, 2007, issue of Science News

    At least a few years to prepare “Northern Exposure: The inhospitable side of the galaxy?” (SN: 4/21/07, p. 244) posits that every 64 million years a mass die-off occurs due to increased cosmic rays.