Say What?

  1. Animals

    ‘Bag of chips effect’ helps bats find a meal

    Bats get a clue to where dinner is by listening to peers attacking prey.

    By Kate Baggaley
  2. Health & Medicine

    Sleep drunkenness might be common

    A new survey shows that about 15 percent of people sometimes wake up disoriented and confused, a condition called sleep drunkenness.

    By Laura Sanders
  3. Planetary Science

    To explain asteroid composition, scientists invoke nuts

    Brazil nut effect may explain why only large boulders dot surfaces of asteroids.

    By Thomas Sumner
  4. Psychology

    Vocal fry

    At the lowest registers of the human voice, a creaky, popping sound known as vocal fry emerges.