News

  1. Earth

    Farm Harm: Ag chemicals may cause prostate cancer

    On-the-job exposure to certain agricultural chemicals may be responsible for farmers' high rates of prostate cancer.

    By Ben Harder
  2. Astronomy

    Starry View: Image reveals galaxy’s violent past

    The most detailed visible-light picture ever taken of the heavens reveals that the nearby Andromeda galaxy has had a much more violent history than our own Milky Way has.

    By Ron Cowen
  3. Anthropology

    Ancestral split in Africa, China

    Environmental conditions may have encouraged Homo erectus to develop a level of social and tool-making complexity in Africa that the same species did not achieve in China.

    By Bruce Bower
  4. Anthropology

    Wari skulls create trophy-head mystery

    A 1,000-year-old Peruvian site has yielded the remains of decapitated human heads that were used as ritual trophies but, to the researchers surprise, did not come from enemy warriors.