Uncategorized

  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. Animals

    Cone snail deploys insulin to slow speedy prey

    Fish-hunting cone snails turns insulin into a weapon that drops their prey’s blood sugar and eases capture.

    By Susan Milius
  3. Life

    Human evolution tied to a small fraction of the genome

    Natural selection has concentrated on a small portion of the human genome, and mostly not on genes themselves.

    By Tina Hesman Saey
  4. 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.