News

  1. Genetics

    Flexible DNA computer finds square roots

    Scientists design a digital circuit made of molecules that may be able to crunch a wider variety of complex math problems than previous versions.

    By Daniel Strain
  2. Life

    Holding back evolution

    Gene mutations that are beneficial on their own combine to slow down progress, new bacterial experiments show.

    By Tina Hesman Saey
  3. Humans

    Ancestral gals roamed, guys stayed home

    Females in two ancient hominid species may have left their home groups to find mates.

    By Bruce Bower
  4. Health & Medicine

    Spotting newborns at risk of hearing loss

    Testing for cytomegalovirus in saliva of infants can identify those harboring the virus, a new study shows.