Joel Sartore is a regular contributor to National Geographic, and his photographic assignments have taken him to some of the world's most challenging environments and brought him face to face with wildlife in all 50 U.S. states and all seven continents. He was recently named a National Geographic Fellow for his work on The Photo Ark, a multiyear project to document the world's biodiversity in studio portraits. His photograph of a lion in a tree was voted the best picture by National Geographic in 2011, and also won him a 2012 Veolia Environment award for wildlife photography. In addition to his work with National Geographic, Mr. Sartore has contributed to many other prestigious publications, including Audubon Magazine, Time, Life, Newsweek, and Sports Illustrated. His work has been highlighted by National Geographic Explorer, NBC Nightly News, NPR's Weekend Edition, and the hour-long PBS documentary At Close Range. He is also a regular contributor to CBS's Sunday Morning with Charles Osgood, and a noted author and public lecturer to audiences around the world. Mr. Sartore has written several books that highlight his craft and his work, including RARE: Portraits of America's Endangered Species, Photographing Your Family, and Nebraska: Under a Big Red Sky.