The ship's slave captain became a hero during the Civil War; the ship will likely remain under water.
The precious artifacts were recovered during a reconnaissance dive to the shipwreck site on April 15 off the coast of South Carolina.
When a train carrying circus animals derailed in a small town in central Pennsylvania, on Memorial Day 1893, animals were buried -- but where?
The dirt-caked tube was finely carved out of bone and had a perforated, threaded screw cap.
Crewmen aboard a World War II bomber etched their lovers' names on board. But that didn't save the plane from a grim fate.
Whatever the fortunes of digital currencies, they are a major shift from centuries of history that relied on tangible money instead of virtual.
Some critics sarcastically refer to the single bullet theory as the magic-bullet theory.
From Castro to mobsters to the KGB, many theories still compete to answer one of history's biggest questions.