News

  1. Earth

    Underground Soil Economy: Microbes hidden in the dirt react to UV boost

    The community of soil microbes may live hidden in the ground, but it still changes when there's more ultraviolet radiation above.

    By Susan Milius
  2. Anthropology

    DNA Diaspora: Humanity may share tangled genetic roots

    A controversial new genetic analysis concludes that Homo sapiens evolved by expanding out of Africa in multiple waves beginning at least 600,000 years ago and then interbreeding, rather than totally replacing close relatives such as the Neandertals.

    By Bruce Bower
  3. Health & Medicine

    Genetic Culprit: Mutation increases risk for uterine fibroids

    Analysis of DNA from families whose women have been beset by uterine growths reveals a mutation that can predispose women to these so-called fibroids.