SCIENCE: THE BOTULIN TOXIN

The botulin toxin from the Clostridium botulinum bacterium is the most potent biological toxin known. One gram of the toxin--a raisin-size quantity--would suffice to kill 1 million people. Two pounds of the toxin would eradicate the human race. [Source: http://jama.ama-assn.org/cgi/content/full/285/8/1059, et al]