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.
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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?