With the arrival of anthrax letters in Washington, New York, and Florida in the fall of 2001, the often-ignored threat of bioterrorism became a very frightening reality, causing illness and death and costing billions of dollars. How has this attack changed our assessment of the threat of biological and chemical weapons? What can and should be done to detect and control these weapons and defend ourselves against future attacks?

Recorded on Wednesday, November 14, 2001
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