Endurance Noah talks with author Caroline Alexander about her new book Endurance: Shackleton's Legendary Antarctic Expedition. Sir Ernest Shackleton led 27 men on an expedition to the Antarctic continent, with the goal of becoming the first to trek across the icy continent on foot. But one day short of landfall his ship--the Endurance--became trapped in the ice. What followed was a harrowing adventure that ultimately made Shackleton a hero and a legend. Endurance: Shackleton's Legendary Antarctic Expedition is published by Knopf.