Award-winning photographer and regular contributor to National Geographic magazine, Joel Sartore is the founder of the National Geographic Photo Ark, a 25-year documentary project to fight global extinctions by photographing every animal species in human care. Sartore estimates the total to be 13,000; to date he has photographed more than 10,000. Known for his sense of humor and midwestern work ethic, he travels the world to find new animals but is always happy to come home to Lincoln, Nebraska, where he lives with his wife, Kathy, and their three children. Web: joelsartore.com. Instagram: joelsartore. Facebook: Joel Sartore, photographer. Twitter: @joelsartore