Centers for Disease Control and Prevention
Centers for Disease Control: Facts About Ricin
Information that answers the questions what ricin is, where ricin is found and how it is used, how ricin exposures occur, how ricin affects the body, signs and symptoms of ricin exposure, and the like.
PBS
Pbs Teachers: Umbrella Assassin: Biochemical Weaponry
Research the first case of ricin poisoning in 1978, from a scientific and political perspective. Identify and rate potential sources of biochemical warfare available today.