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  1. Science & Society

    Scientists-turned-students guide viewers through ‘The Most Unknown’

    In The Most Unknown, a film on Netflix, a research round robin leads to fascinating discussions about scientific questions.

    By Emily Conover
  2. Life

    Tiny bits of RNA can trigger pain and itchiness

    Two microRNAs may shed light on the causes of nerve pain and itch.

    By Tina Hesman Saey
  3. Neuroscience

    Strange brains offer a glimpse into the mind

    A close look at unusual brains offers a way to understand how the human mind is constructed, two new books argue.

    By Laura Sanders
  4. Animals

    In the animal kingdom, what does it mean to be promiscuous?

    A review of hundreds of scientific studies finds that the label “promiscuous” is applied to a surprisingly wide range of mating behaviors in animals.