News

  1. Astronomy

    Stellar Switch: Sun not alone in making magnetic flip-flops

    After years of searching, researchers have for the first time documented that a star other than the sun flips its magnetic poles.

    By Ron Cowen
  2. Earth

    Going Down: Climate change, water use threaten Lake Mead

    If climate changes as expected and future water use is not curtailed, there's a 50 percent chance that Arizona's Lake Mead, one of the southwestern United States' key reservoirs, will become functionally dry in the next couple of decades.

    By Sid Perkins
  3. Health & Medicine

    Benign—Not: Unexpected deaths in probiotics study

    Acute pancreatitis patients provided nutrition laced with supposedly beneficial gut microbes died at far higher rates than did patients who received just the nutrients.