News

  1. Chemistry

    Matcha green tea packs the antioxidants

    A green tea used in Japanese tea ceremonies contains much more of a beneficial antioxidant than ordinary green tea.

    By Jessica Gorman
  2. Chemistry

    Nuclear-waste monitoring gets close to the source

    A new prototype device may make monitoring of radioactive contamination cheaper and easier.

    By Jessica Gorman
  3. Chemistry

    Catnip repels pest

    Known to repel cockroaches and mosquitoes, catnip oil also works against termites.

    By Jessica Gorman
  4. Health & Medicine

    Weight-loss pill carries risks

    The drug ephedra and its presumed active ingredient, ephedrine, provide only modest weight-loss effects and pose health risks.

    By Nathan Seppa
  5. Astronomy

    All-sky survey makes Internet debut

    An atlas of some 5 million images from the Two Micron All-Sky Survey is now available online.