This week the media can't get enough of 28-year-old whistleblower Edward Snowden. The hero/traitor released details of the National Security Agency (NSA)'s PRISM program, an intelligence operation that monitors the emails and phone calls of American citizens.
All the news on Snowden, today's most prominent whistleblower, got us wondering about six of the past's most well-known informants. Among them are Peter Buxtun, responsible for exposing the notorious Tuskegee Syphilis Experiment, and Mark Whitacre, the FBI mole turned white collar criminal. To find out more about these celebrated and infamous whistleblowers, flip through this slideshow.