News

  1. Animals

    As bird flu evolves, keeping it out of farm flocks is getting harder

    New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.

    By Tina Hesman Saey
  2. Earth

    An ancient Earth impact could help in the search for Martian life

    Strange cone-shaped rocks led scientists to the hidden remains of one of Earth’s oldest asteroid impacts. It could help us find fossil life on Mars.

    By Douglas Fox
  3. Health & Medicine

    These 5 nutrients might be lacking in your diet

    U.S. diets should include more of vitamins D and E, fiber, calcium and magnesium — all are essential nutrients that could offer health benefits.