Feature

  1. How the Butterfly Gets Its Spots

    The spots on a butterfly wing turn out to be unusually good model systems for a range of disciplines from genetics to behavioral ecology, offering biologists a chance to paint the really big picture of how evolution works.

    By Susan Milius
  2. Health & Medicine

    Sobering Work

    Unraveling alcohol's effects on the developing brain.

    By Damaris Christensen
  3. Health & Medicine

    Dietary Dilemmas

    Low-carbohydrate diets, such as the Atkins diet, could be more effective for weight loss than low-fat diets are.

    By Damaris Christensen

  4. Essence of g

    New efforts to probe the biology of intelligence stir up a long-running controversy over what mental tests actually measure.