What Happened to Amelia Earhart, Jimmy Hoffa and D.B. Cooper?

After a tip from an informant last month, police in Michigan dug up a driveway in the Detroit suburbs in hopes of finding Jimmy Hoffa's body, only to ultimately come up empty-handed. But for a few days, the unsolved mystery of Hoffa's disappearance once again captivated the country. Hoffa, who headed the powerful International Brotherhood of Teamsters Union at one point, was last seen outside a suburban Detroit restaurant in 1975, but his cold case is just one of many involving famous...Full Story