News

  1. Climate

    With warming, some commercial fish may boom and bust

    Higher temps in Arctic waters might be good for some species but not for others, new research suggests.

    By Sid Perkins
  2. Health & Medicine

    In youth hockey, more contact means more injuries

    Concussions are three times more common among 11- to 12-year-olds in leagues that permit checking, a Canadian study finds.

    By Nathan Seppa
  3. Humans

    Secondhand smoke linked to mental distress

    A Scottish survey finds a link between exposure to cigarette smoke and serious emotional problems.

    By Bruce Bower
  4. Planetary Science

    Before the Mississippi, minerals show ancient rivers flowed west

    Michigan zircons uncover the path of an ancient river system across North America.