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  1. Science & Society

    The science of us

    Editor in chief Nancy Shute introduces a new social sciences column that explores what it means to be human.

    By Nancy Shute
  2. Physics

    Physics explains why gold stays pristine

    Metals like copper oxidize — reacting with oxygen in the air — but gold doesn’t, thanks to a quick switch in atom arrangement on its surface.

    By Emily Conover
  3. Health & Medicine

    Congo prepared for Ebola. Now a rare strain is exposing gaps in readiness

    As Congo’s Bundibugyo Ebola outbreak grows, public health responders are turning to old-school tactics to fight it as scientists search for new tools.

    By Ray Mwareya
  4. Health & Medicine

    Ultrasound aimed at the brain offers new hope for Parkinson’s patients

    A noninvasive treatment called high-intensity focused ultrasound helped relieve the shaking, stiffness and pain that accompany Parkinson’s disease.