News
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Health & MedicinePersistent 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.
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EarthBirth 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 -
Health & MedicineAIDS 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.