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  1. Health & Medicine

    Firm nears completion of human genome

    Celera Genomics announced that it has sequenced 90 percent of the human genome and claimed it has found about 97 percent of all human genes.

    By John Travis
  2. Health & Medicine

    Poor glucose metabolism risks clots

    Excess concentrations of insulin in the blood may hamper the body's ability to break down blood clots efficiently.

    By Nathan Seppa
  3. Animals

    Redder is healthier in squawking birds

    When barn swallow nestlings open wide for food, their parents may be looking for the healthiest throats.

    By Susan Milius

  4. Evolution may not be slow or random

    Studies of fruit flies taking over the New World and stickleback fish adapting to Canadian lakes suggest that evolution can proceed quickly and take predictable paths.