News

  1. Neuroscience

    Newly identified brain circuit hints at how fear memories are made

    A newfound set of brain connections appears to control fear memories, a finding that may lead to a better understanding of PTSD and other anxiety disorders.

    By Ashley Yeager
  2. Physics

    Speed of light not so constant after all

    Even in vacuum conditions, light can move slower than its maximum speed depending on the structure of its pulses.

    By Andrew Grant
  3. Earth

    Faulty thermometers exaggerated western U.S. mountain warming

    Defective thermometers used in snowpack and ecology research overstated warming in western U.S. mountains.

    By Thomas Sumner
  4. Animals

    Mountain migration is a roller coaster for bar-headed geese

    Bar-headed geese rise and fall to match terrain below them when migrating over the Himalayas.