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  1. Health & Medicine

    Protective Progeny: Peptide treats and prevents breast cancer

    A synthetic version of a protein present in a woman's body during pregnancy is as effective against breast cancer as the current drug tamoxifen is, according to a study in rodents.

    By Katie Greene
  2. Anthropology

    Gone with the Flow: Ancient Andes canals irrigated farmland

    Excavations in the Andes mountains have unearthed the earliest known irrigation canals in South America.

    By Bruce Bower
  3. Humans

    Letters from the November 12, 2005, issue of Science News

    Big leap The pendular running gait described in “Stepping Lightly: New view of how human gaits conserve energy” (SN: 9/17/05, p. 182) as one of the most efficient bipedal gaits looks remarkably like the way eyewitnesses claim Bigfoot creatures move.