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Anthrax Investigation

Anthrax Investigation

The new science of microbial forensics reveals the source of the anthrax used in the deadly attacks of 2001.

arrow History of Biowarfare

Once, plague-infested corpses were catapulted over castle walls. Today, genetically modified "superplague" could unleash devastation.

arrow Video Extra

In this bonus video, see how scientists could tell whether the anthrax in the 2001 attacks was specially engineered to disperse through the air.

arrow Ask the Expert

Paul Keim of Northern Arizona University answers questions about microbial forensics, the threat of global plagues, and more.