Henry Worsley's beingness fascination with Antarctic explorers specified arsenic Ernest Shackleton, Roald Amundsen and Robert Scott led him to retrace their expeditions successful 1 of the astir inhospitable places connected Earth. In 2015 Worsley acceptable disconnected yet again to emulate his hero, Shackleton, by embarking connected the archetypal solo crossing of the continent. Anthony Mason talks with David Gran, writer of the caller publication "The White Darkness," and with Worsley's wife, Joanna, astir her husband's fateful trip.