Uncategorized

  1. 19839

    Rather than concluding that the object that hit Canada 12,900 years ago was a comet, I wonder whether there might not be an alternate reason that geologists haven’t discovered a large hole. If a meteor hit a kilometer-thick glacier, would it have left a crater in the rock underneath the ice? Peter ShorWellesley, Mass. Scientists […]

    By Science News
  2. Math

    Trisecting an Angle with Origami

    A paper-folding technique can solve a classic math problem.

    By Julie Rehmeyer
  3. Humans

    Letters from the June 2, 2007, issue of Science News

    Where there’s fire Regarding “Risky Flames: Firefighter coronaries spike during blazes” (SN: 3/24/07, p. 180), was the increased death rate due to firefighters having a higher rate of heart disease than people do in other jobs? An analysis of eating habits may reveal more insight.