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David Scott Silverberg is an exploration geographer working on conservation projects spanning six continents. His mix of exploration, research, and digital photo-video storytelling has been popular with National Geographic travelers for many years. A National Geographic grantee and a fellow of both the Royal Geographical Society and the Royal Asia Society, David was executive science director at Earthwatch Institute, set up and managed Boston University environmental field research programs in British Columbia and east Africa, and was a founding White House staff member for AmeriCorps. David has worked in more than 100 countries, manages the Environmental Learning Institute, and teaches at several international universities.