Last updated 3:58AM ET
May 21, 2013
Dr. Robert Ballard, Discoverer of Titanic Wreck, To Speak In Chattanooga Chattanooga, TN (2012-02-14) Dr. Robert Ballard has been exploring the ocean since 1959. His discoveries have led to new scientific theories in geology, biology and chemistry. He has also uncovered shipwrecks and pieces of history in the waters of the world, including the wreck of the Titanic.