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  1. 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.

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  2. 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. So, has any actual increase in brain-development problems been found in people in […]

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  3. One tall gene

    The first reported gene for height can account for almost a centimeter of difference among people who have different versions of it.