Uncategorized

  1. Anthropology

    Walking Small: Humanlike legs took Homo out of Africa

    Newly discovered fossils, 1.77 million years old, show that the earliest known human ancestors to leave Africa for Asia possessed humanlike legs, feet, and spines, but strikingly small brains and primitive arms.

    By Bruce Bower
  2. Math

    The Essence of Group Conflict

    Eruptions of open conflict between ethnic or religious groups have a lot to do with the way communities are geographically distributed.

    By Julie Rehmeyer
  3. Humans

    Letters from the September 22, 2007, issue of Science News

    Personnel question In “E-Waste Hazards: Chinese gear recyclers absorb toxic chemicals” (SN: 7/14/07, p. 20), researchers found “astronomical concentrations” of deca-BDE in the residents of Guiyu, and the article cites studies showing that related PBDEs harm brain development in mice and rats.