Uncategorized

  1. Astronomy

    Solar Flip-Flops: Sun storms spawn magnetic reversal

    Coronal mass ejections, billion-ton clouds of charged particles blasted from the sun, appear to play a key role in reversing the sun's magnetic poles every 11 years.

    By Ron Cowen
  2. Health & Medicine

    No Scope: CT scan works as well as colonoscopy

    A computed tomography scan of the large intestine works as well as colonoscopy in detecting signs of colon cancer.

    By Nathan Seppa
  3. Humans

    Letters

    Letters from the Dec. 6, 2003, issue of Science News.

    By Science News
  4. Humans

    Nanotech bill gives field a boost

    Congress has approved a nanotechnology act that commits $3.7