News

  1. Health & Medicine

    Being bilingual is great. But it may not boost some brain functions

    A large study of U.S. bilingual children didn’t turn up obvious benefits in abilities to ignore distractions or switch quickly between tasks.

    By Laura Sanders
  2. Physics

    Big black holes can settle in the outskirts of small galaxies

    Astronomers have found dozens of surprisingly massive black holes far from the centers of their host dwarf galaxies.

    By Lisa Grossman
  3. Health & Medicine

    Faulty cellular antennae may cause a heart valve disorder

    Mitral valve prolapse might be caused by dysfunctional primary cilia meant to signal cells during development.

    By Aimee Cunningham
  4. Environment

    Emissions of a banned ozone-destroying chemical have been traced to China

    Since 2013, eastern China has increased its annual emissions of a banned chlorofluorocarbon by about 7,000 metric tons, a study finds.