Feature

  1. Earth

    Dead Heat

    New studies suggest that adverse health effects related to global warming aren't just a theoretical concern for the distant future.

    By Sid Perkins

  2. Comfortably Numb

    Scientists are finding the molecular targets of anesthetics.

    By John Travis

  3. Beg Your Indulgence

    The Japanese concept of amae, in which one person presumes that another will indulgently grant a special request, may apply to different forms of behavior at different ages, even in Western countries.

    By Bruce Bower
  4. Animals

    Thoroughly Modern Migrants

    Butterflies and moths are causing scientists to devise a broader definition of migration and this has raised some old questions in new ways.