In this startling program, History Undercover probes long hidden government files to reveal how, for three decades, an untold number of civilians and military personnel became human guinea pigs. Discover how, as part of the infamous Manhattan Project, scientists injected plutonium into patients in a hospital in New York. Lean how thousands of military personnel were involved in the government's testing of hydrogen and atomic bombs in the Nevada desert from 1951 to 1963, and meet former students of a Minnesota school where children unknowingly participated in secret tests in the early 50s.