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  1. Neuroscience

    Ions may be in charge of when you sleep and wake

    The recipe for sleep and wake may depend on ions.

    By Tina Hesman Saey
  2. Animals

    Peacocks twerk to shake their tail feathers

    Researchers reveal the biomechanics of the peacock mating dance.

    By Helen Thompson
  3. Neuroscience

    Words’ meanings mapped in the brain

    Language isn’t just confined to one region of the brain: The meaning of words spark activity all over the cerebral cortex.

    By Meghan Rosen
  4. Planetary Science

    Tiny moon orbits dwarf planet

    Hubble Space Telescope images from April 2015 show that the dwarf planet Makemake has a tiny moon.