News

  1. Health & Medicine

    Brain Fix: Stem cells supply missing enzyme

    Brain stem cells implanted into sick mice restored a missing enzyme and extended life span by 70 percent.

    By Brian Vastag
  2. Earth

    Hey, it’s cooler near the sprinklers

    Extensive agricultural irrigation can significantly affect local climate and may be masking the effects of global warming in some areas.

    By Sid Perkins
  3. Tech

    EPA council sets priorities

    The Environmental Protection Agency's Science Policy Council has outlined the agency's nanotechnology-research needs.

    By Aimee Cunningham
  4. Health & Medicine

    Emerging bug pilfers DNA

    A virulent bacterium invading U.S. hospitals and the battlefields of the Middle East pilfers its genes from other bacteria.