Uncategorized

  1. Health & Medicine

    Chip of tooth tells radiation dose

    A two-milligram dot of tooth enamel serves as a radiation dosimeter.

    By Laura Sanders
  2. Space

    Shaving extra dimensions

    More news from the American Physical Society meeting.

    By Lisa Grossman
  3. Life

    Hydrothermal vents sometimes colonized from afar

    Deep-sea currents can waft larvae hundreds of kilometers.

    By Sid Perkins
  4. Plants

    Losing life’s variety

    2010 is the deadline set for reversing declines in biodiversity,  but little has been accomplished.

    By Susan Milius
  5. Health & Medicine

    Carotid procedures test about equally

    Study finds similar stroke risks after surgery or stents.