For the past 23 years, Peter Essick has worked as a freelance photojournalist. His main client has been National Geographicmagazine, and he has produced more than 30 stories for the magazine on many different topics. He first started at the magazine as a summer intern while studying photojournalism at the University of Missouri. ... http://photography.nationalgeographic.com/photography/photographers/photographer-peter-essick/