News

  1. Life

    Old fish, new fish, red fish, blue fish

    A difference in vision in cichlids in Lake Victoria could be pushing a species to split into two.

    By Patrick Barry
  2. Health & Medicine

    Pregnancy curiosity

    Asian-Caucasian couples having children face slightly increased risks of pregnancy complications.

    By Nathan Seppa
  3. Health & Medicine

    Anthrax vaccine makeover

    Revamped anthrax vaccination regimen eases some side effects that have hampered the vaccine’s acceptance.

    By Nathan Seppa
  4. Humans

    Machu Picchu’s far-flung residents

    A new chemical analysis of skeletons at the Inca site of Machu Picchu strengthens the idea that the royal estate was maintained by retainers who had been uprooted from homes throughout the empire.