David Roskelley has a penchant for difficult things. The first American to climb the Seven Summits and Volcanic Seven Summits, the highest mountains and volcanoes on each continent, Roskelley has survived on yak meat while summiting Mount Everest, and traveled as far afield as Papua New Guinea and Antarctica in search of peaks to climb. A Chicago native, he was first entranced by the mountains as a twelve-year-old seeing the Teton Range. His next goal is more audacious than the last: to reach the high point of the Moon.