News

  1. Humans

    Oldest hand axes found

    Homo erectus may have made both advanced and simple tools 1.76 million years ago.

    By Bruce Bower
  2. Humans

    Middle school scientists recognized

    The first class of 30 finalists in the Broadcom MASTERS will convene in Washington, D.C., this fall to compete in new national science competition geared to younger students.

    By Devin Powell
  3. Chemistry

    Fighting flames with greener materials

    New, nano-thin coatings for fabrics and plastics are relatively nontoxic flame retardants.

    By Janet Raloff
  4. Health & Medicine

    Saffron takes on cancer

    The yellow spice inhibits liver cancer growth, tests in rats show.

    By Nathan Seppa
  5. Astronomy

    Star goes boom, telescopes zoom

    Astronomers have spotted a supernova in the Pinwheel Galaxy, the nearest such stellar explosion in decades.