News

  1. Health & Medicine

    Persistent Prions: Soilbound agents are more potent

    Prions, deformed proteins that cause brain-destroying diseases such as chronic wasting disease or mad cow disease, are more infectious when bound to soil particles.

    By Carolyn Barry
  2. Earth

    Birth of an Island: Megaflood severed Europe from Britain

    Hundreds of thousands of years ago, the spillover from an immense glacial lake carved a chasm that in a matter of weeks separated what is now Britain from continental Europe.

    By Sid Perkins
  3. Health & Medicine

    AIDS Abated: Genome scans illuminate immune control of HIV

    Three genetic variations picked out by powerful whole-genome scans help explain why some people develop AIDS quickly while others keep it at bay.