News

  1. Immune cells carry concealed weapons

    Scientists propose that protein-cleaving enzymes called proteases are the real microbe destroyers in bacteria-killing cells called neutrophils.

    By John Travis
  2. Humans

    Web site debuts on junior high science

    A new Web site reviews the accuracy of commonly used middle school physical science books and offers tips and assistance for teachers working from those texts.

    By Janet Raloff
  3. Agriculture

    Journal disowns transgene report

    The journal Nature now says it shouldn't have published a report that genetically engineered corn is leaking exotic genes into the traditional maize crops of Mexico.

    By Susan Milius
  4. Materials Science

    A Field of Diminutive Daisies

    Researchers have created tiny daisies as a demonstration of a new technique that creates three-dimensional structures from carbon nanotubes.