Why would Doug Hall follow in Robert Peary's 1909 sled tracks to the North Pole, despite the grueling terrain and temperatures between 15 and 62 degrees below zero? His goal was to resurrect the spirit of Peary's journey in a world increasingly driven by instant gratification, short term business focus, and lack of sustained dedication to great causes. Peary succeeded where some 578 expeditions before him had failed. North Pole Tenderfoot...