News

  1. 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
  2. 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
  3. Science & Society

    How house design can curb childhood illnesses in Africa

    Experimental houses with screens, rainwater systems and ventilation reduced malaria, diarrhea and infections among children in Tanzania.

    By Tawanda Karombo
  4. Archaeology

    One mystery of the Great Pyramid’s longevity has finally been solved

    Differences in how the pyramid and surrounding soil vibrate, along with design choices, have protected the structure from earthquakes.