JOEL SARTORE is an internationally celebrated photographer and photography teacher who brings an appealing sense of humor and midwestern work ethic to everything he does, including more than 30 magazine assignments, 4 books, and his celebrated Photo Ark initiative for National Geographic. His wildly popular photography courses, especially Fundamentals of Photography, have for years been bestsellers for The Teaching Company (which owns Great Courses). HEATHER PERRY [co-author] is a photographer whose work has been published in National Geographic, the New York Times, the Wall Street Journal, and more.