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  1. Health & Medicine

    Ripples in rats’ brains tied to memory may also reduce sugar levels

    Brain signals called sharp-wave ripples have an unexpected job: influencing the body’s sugar levels, a study in rats suggests.

    By Laura Sanders
  2. Psychology

    Psychology has struggled for a century to make sense of the mind

    Research into what makes us tick has been messy and contentious, but has led to intriguing insights.

    By Bruce Bower
  3. Health & Medicine

    6 answers to parents’ COVID-19 questions as kids return to school

    Universal masking in schools could prevent a bumpy 2021–22 schoolyear and keep kids, many of whom are too young to be vaccinated, safe, experts say.