Kuro5hin is re-publishing an article that appeared a couple of years back on the urban legend debunking site Snopes.com. The article explains the actual dangers of nuclear, biological, and chemical weapons. The threat, while real, is apparently vastly overstated. It's an excellent antidote to media fear-mongering. It also contains valuable advice about what to do if you do get caught downwind. He says, "if you remain calm you will probably not die." Snopes also links to a 2001 piece from the Washington Post about the retired Army Sergeant who wrote the article.