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  1. Health & Medicine

    How dad’s stress changes his sperm

    Stress may change sperm via packets of RNA in the epididymis, a mouse study suggests.

    By Laura Sanders
  2. Neuroscience

    The brain’s helper cells have a hand in learning fear

    After a traumatic experience, rat brains release inflammatory signals that come from astrocytes, suggesting a new role for the brain’s “helper” cells.

    By Bethany Brookshire
  3. Science & Society

    In science, some big risks are worth the rewards

    Acting Editor in Chief Elizabeth Quill says scientists sometimes take risks that can lead to significant rewards and important discoveries.

    By Elizabeth Quill
  4. Science & Society

    Readers inspired by SN 10 scientists’ research

    Readers wanted to know more about the scientists' research who were profiled in "The SN 10: Scientists to watch."