News

  1. Health & Medicine

    Timing That First Spoonful: Diabetes risk reflects when cereals enter infant diet

    The timing of cereals' introduction into children's diets may affect their risk of developing type 1 diabetes, two studies suggest.

    By Ben Harder
  2. Anthropology

    Y Trail of the First Americans: DNA data point to late New World entry

    Scientists identified a gene variant on the Y chromosome that allowed them to estimate that people first reached the Americas no earlier than about 18,000 years ago.

    By Bruce Bower
  3. Earth

    Volcanic Legacy: Tortoises chronicle eruption in their genes

    An ancient volcanic eruption in the Galápagos Islands left its legacy in the diminished genetic diversity of one subspecies of the archipelago's famed giant tortoises.