News in Brief

  1. Health & Medicine

    Triplet births decline as IVF practice evolves

    The number of U.S. pregnancies resulting in three or more babies has gone down since 1998.

    By Nathan Seppa
  2. Health & Medicine

    Cell counts provide a read on ovarian cancer

    New technology might discern which tumors are most dangerous and help guide treatment.

    By Nathan Seppa
  3. Animals

    How the ghost shark lost its stomach

    The lack of a digestive organ in fish and other animals is linked to genetics.

    By Susan Milius
  4. Earth

    Earth’s plate boundaries may nurture diamond formation

    An experiment mimicking conditions deep in the Earth suggests that some tectonic plate boundaries may make ideal diamond nurseries.