Bob Ballard reveals the inside stories behind his most exciting discoveries, while sharing the personal triumphs, challenges and tragedies that led him to them.

For the 20th anniversary of “Titanic,” James Cameron reopens the file on the disaster.

Explorer Robert Ballard sets out to solve the mystery of Amelia Earhart’s disappearance as he and a team of experts travel to the remote Pacific atoll named Nikumaroro in search…