Robert Ballard has found the Titanic and other famous shipwrecks. This month his crew started trying to solve one of the 20th century’s greatest mysteries.

Though the Navy concluded after a long and costly search that Amelia Earhart died shortly after crashing into the Pacific in 1937, the murky circumstances of her disappearance have made it one of the 20th century’s enduring mysteries.CreditThe New York Times

Robert Ballard is the finder of important lost things.

In 1985, he discovered the Titanic scattered beneath the Atlantic Ocean. He and his team also located the giant Nazi battleship Bismarck and, more recently, 18 shipwrecks in the Black Sea.