News

  1. Health & Medicine

    Male circumcision could avert millions of HIV infections

    Mass circumcision of boys and men in sub-Saharan Africa could avert 2.7 million new cases of HIV infection over the next decade.

    By Nathan Seppa
  2. Astronomy

    Recurrent Eruption: Explosive stellar saga

    Six thermonuclear explosions have ripped off the outer layers of a dense, nearby star in the past 108 years.

    By Ron Cowen
  3. Health & Medicine

    Big Headache: Auras may add risk to migraines

    Women who experience migraines that are preceded by sensory irregularities face a heightened risk of heart attack and stroke.

    By Nathan Seppa
  4. Earth

    Sandy clues to ancient climate

    The orientation of dunes in north-central Nebraska indicates that the climate there a millennium ago was much different than it is today.