News

  1. Earth

    Pollution Ups Blood Pressure: Inhaled particles linked to transient effect

    In a laboratory setting, volunteers breathing pollutants generated by sources such as vehicle engines experience slight but steady increases in blood pressure.

    By Ben Harder
  2. Earth

    Arctic Foulers: Foraging seabirds carry contaminants home

    When seabirds go out looking for food, they can bring home traces of pollutants that build up around their nesting colonies.

    By Susan Milius
  3. Earth

    Power-laden winds sweep North America

    There's more than enough wind power to satisfy the United States' energy requirements, a new analysis of weather data suggests.

    By Sid Perkins
  4. Health & Medicine

    Brain Power: Stem cells put a check on nerve disorders

    Adult neural stem cells protect the brain against repeated episodes of inflammation in disorders such as multiple sclerosis by killing inflammatory immune cells.