News

  1. Health & Medicine

    Coronary bypass rates drop

    Heart patients have been less likely to undergo the surgery since 2001, with many getting a less invasive procedure.

    By Nathan Seppa
  2. Life

    Sickle-cell may blunt, not stop, malaria

    Once thought to keep parasite out of cells, the trait appears to diminish the severity of infection.

    By Tina Hesman Saey
  3. Humans

    No nuts for you, Nutcracker Man

    Tooth analysis shows huge-jawed hominid grazed on grasses and sedges.

    By Bruce Bower
  4. Earth

    Grand Canyon born by continental lift

    A "drip" deep within the Earth may have raised the Colorado plateau to create the spectacular landscape of the U.S.