Uncategorized

  1. Chemistry

    The Dirt on Art: Chemists test laser cleanup of paintings

    A new experiment shows that lasers can be a safe tool for cleaning paintings.

    By Jessica Gorman
  2. Health & Medicine

    Acetaminophen in Action: Effect on an enzyme may stop pain, lower fever

    The discovery of an enzyme scientists are calling cyclooxygenase-3, which is disabled by acetaminophen, might explain why this drug can stop pain and fever but not inflammation.

    By Nathan Seppa
  3. Humans

    From the March 22, 1930, issue

    THE SUN’S NEW TRANS-NEPTUNIAN PLANET The Lowell Observatory has made the discovery of a celestial body whose rate of motion and path among the stars indicate that it is a new member of the sun’s family of planets out beyond Neptune.