News

  1. Infected butterflies reverse sex roles

    In butterfly populations afflicted by male-killing bacteria, females gather in frantic swarms to mate.

    By Susan Milius

  2. Mass illness tied to contagious fear

    Researchers have linked a recent outbreak of illness at a Tennessee high school to psychological factors rather than toxic gas exposure, as originally suspected.

    By Bruce Bower
  3. Health & Medicine

    Nerve cells of ALS patients harbor virus

    Fragments of viral genetic material show up with unusually high frequency in nerve tissue of patients with ALS, or Lou Gehrig's disease, suggesting a link between the virus and this lethal illness.

    By Nathan Seppa

  4. For geneticists, interference becomes an asset

    A new method of disrupting genes, called RNA interference, works in mouse cells.