Uncategorized

  1. Health & Medicine

    Girl athletes’ energy crisis

    Lack of regular periods in teenage female athletes stems from a hormone imbalance arising from inadequate energy intake.

    By Nathan Seppa
  2. Animals

    Squeaky chimp sex, or not

    Female chimps tend toward silent sex when the other girls could overhear.

    By Susan Milius
  3. Space

    Rocky cores form first

    A theorist says new extrasolar findings prove that the standard model of planet formation is correct.

    By Ron Cowen
  4. Health & Medicine

    Cooking cancer cells

    A new technique combining antibodies, carbon nanotubes and near-infrared light holds promise for treating malignancies, scientists report.

    By Ashley Yeager
  5. Archaeology

    Green reapers

    Agriculture's rise sparked widespread use of green stone beads as fertility charms and as protection against supernatural forces, scientists propose.