Humans

  1. Health & Medicine

    Sea Kids See Clearly Underwater

    Sea-gypsy children spend so much time swimming that their eyes have adapted to improve vision underwater.

    By Emily Sohn
  2. Health & Medicine

    Gut germs to the rescue

    Many of the bacteria that live in our intestines may help keep us healthy.

    By Emily Sohn
  3. Humans

    Fossil skulls plug gap in human origins

    Anthropologists have unearthed the oldest fossils of modern people ever found.

    By Emily Sohn