David Scott Silverberg (PhD MIT, Post-Doc, Harvard) is an exploration geographer working on conservation projects in 6 continents. His mix of exploration, research and digital foto-video storytelling has been popular with NGS travelers for many years. His expertise in natural and biocultural studies explores the geological, biodiversity and cultural/political/economic issues of his regional conservation studies. 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 is a fellow of the Royal Geographic Society and the Royal Asia Society, has worked in over 100 countries, manages Environmental Learning Institute, teaches at several international universities, and receives grant support from NGS, NSF and numerous foundations.