In August 1914, explorer Ernest Shackleton and his crew set sail from England for Antarctica, where Shackleton hoped to be the first man to cross the uncharted continent on foot. Five months later, the Endurance-just a day's sail short of its destination-became locked in an island of ice, and its destiny and men became locked in history. For ten months the ice-moored Endurance drifted until it was finally crushed, and Shackleton and his men drifting...