Biological warfare is the tactic of using poisonous substances to subdue or kill mass amounts of soldiers or civilians. Learn about various types of bio-weapons and the precautions being taken to minimize their impact.
The 2001 anthrax attacks, the first bioterrorist attacks in the United States, took five lives. Mail was stopped in several cities and it cost more than $1 billion to clean up the spores. So where does the U.S. stand if it's attacked again?