Uncategorized

  1. Chemistry

    Follow the lead

    A new water-soluble, lead-sensing chemical is the first to detect the toxic metal in live cells.

    By Aimee Cunningham
  2. Archaeology

    Ancient rains made Sahara livable

    New evidence indicates that seasonal rainfall more than 7,000 years ago turned Africa's eastern Sahara desert into a savannalike area that attracted an influx of foraging groups.

    By Bruce Bower
  3. Humans

    Preserving Paradise

    President Bush has created the world's largest marine reserve, a no-fishing, no-disturbance zone, surrounding the northwestern Hawaiian Islands.

    By Janet Raloff
  4. Humans

    Books for Late Summer

    The writers of Science News present wide-ranging recommendations of books for readers to pack for their late-summer vacations.