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  1. Neuroscience

    Light from outside the brain can turn on nerve cells in monkey brains

    An extra-sensitive light-responsive molecule allowed nerve cells to be switched on or off with dim light.

    By Laura Sanders
  2. Neuroscience

    Alzheimer’s may scramble metabolism’s connection to sleep

    Mice designed to have brain changes that mimic Alzheimer’s disease have altered reactions to blood sugar changes.

    By Laura Sanders
  3. Animals

    White bellbirds have the loudest known mating call of any bird

    White bellbirds have the loudest mating call, according to scientists who compared the songs of bellbirds and screaming pihas in the Brazilian Amazon.

    By Sofie Bates
  4. Life

    A peek inside a turtle embryo wins the Nikon Small World photography contest

    The annual competition highlights the wonders to be found when scientists and photographers zoom in on the world around us.