Nowadays U.S. grocery shoppers can be reasonably certain that the foods they purchase are safe (if not healthy). Yet this wasn't always the case. In today's episode, we explore the story of one extremely driven, imperfect man, on a mission to clean up America's food industry. Harvey Wiley didn't think it was enough to conduct conventional safety studies, either -- he jumped straight to human experimentation. Join the guys as they delve into the strange story of Harvey Wiley and the Poison Squad in this weekend's Classic episode.