Biological Warfare

A gas mask alone won't protect you if enemies lob this chemical weapon at you. Why did so many soldiers learn this the hard way during World War I?

By Josh Briggs

Sure, llamas are our friends. But little did we know that these fuzzy, camel-like creatures might save us all should the End come in the form of a biological attack.

By Julia Layton

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?

By Marshall Brain & Susan L. Nasr

There have been several anthrax scares in the U.S. since 9/11. Find out where anthrax bacteria comes from, how it infects people and how doctors treat it.

By Lee Ann Obringer

The Vietnam War occurred decades ago, but one of its legacies lingers on in Vietnamese soil and the U.S. court system. How did this defoliant do so much damage?

By Jacob Silverman

Exposure to this nerve agent in minuscule amounts is enough to kill several human beings.

By John Donovan

It may make you run. It may make you throw up. It will definitely make you cry. It's tear gas, and it's no fun to be hit with.

By Robert Lamb