We think our feet are always on solid ground, but in Florida it's more like Swiss cheese. Dick speaks to Casey McKinlay, who, along with his diving partner Jarrod Jablonski, pulled off a 21-hour dive through underwater caves that connect sinkholes.
When Peter Hessler first arrived in the remote Chinese river town of Fuling, the only way to get there was by boat. Recently, he went back for a visit to explore the changes that the Three Gorges Dam has made.
At 91 years old, Henry Stone is still at work as a record producer. He remembers producing one of Ray Charles' earliest recordings, and hand-selling early R&B albums to train porters and in barbershops.