Feature

  1. Archaeology

    Rolling Back the Years

    Scientists are refining carbon dating techniques to make the archaeological timeline more precise.

    By Carolyn Barry
  2. Earth

    Hey, What about Us?

    The plight of polar bears may get most of the attention as climate change disrupts the Arctic ice, but plenty of other species, from walrus and seals to one-celled specks, are also going to see their world change radically.

    By Susan Milius
  3. Tech

    Bad Vibrations

    Despite computer models and wind tunnel tests, bridges show surprising vibrations and movements that engineers are still learning to cope with.

    By Mason Inman

  4. Showdown at Sex Gap

    Faced with two contrasting reports on the science of sex differences in mathematics and science aptitude, researchers at a meeting held in October tried to figure out what's really known about this controversy and how the findings apply to education and test taking.