News

  1. Cosmology

    What detecting gravitational waves means for the expansion of the universe

    The latest LIGO signal proves that gravitational waves travel at the speed of light, ruling out a swath of cosmological theories in the process.

    By Lisa Grossman
  2. Health & Medicine

    Robotic docs can boost surgery time and cost

    Robots in the OR may not be worth the extra time or money for all procedures.

    By Maria Temming
  3. Life

    How bird feeders may be changing great tits’ beaks

    Longer beaks may be evolving in U.K. great tits because of the widespread use of bird feeders in the country.

    By Mariah Quintanilla
  4. Anthropology

    Scientists battle over whether violence has declined over time

    People are no more violent in small-scale societies than in states, researchers contend.