Bob Ballard: An Explorer's Life

He found the Titanic, the Bismarck, and dozens of other lost wrecks. He helped prove the theory of plate tectonics, discover newfound forms of life at hydrothermal vents and pioneered the use of submersibles and telepresence for undersea exploration. Now deep-sea explorer Bob Ballard reveals how a kid from landlocked Kansas grew to become one of the world's most celebrated oceanographers.