Uncategorized

  1. Health & Medicine

    Clear the Way: Stenting opens jammed arteries in the brain

    Using a tiny mesh cylinder called a stent, doctors can prop open narrowed arteries in the brain much as they do in the heart.

    By Nathan Seppa
  2. Anthropology

    Chimpanzee Stone Age: Finds in Africa rock prehistory of tools

    Researchers have uncovered evidence of a chimpanzee stone age that started at least 4,300 years ago in West Africa.

    By Bruce Bower
  3. Planetary Science

    Titan’s organic cloud

    The Cassini spacecraft has imaged a huge cloud that engulfs most of the north pole of Saturn's icy moon Titan and could be a source of the moon's hydrocarbon lakes.