Pete McBride has traveled on assignment to more than 75 countries for the National Geographic Society, Smithsonian, Outside, Esquire, Microsoft, and The Nature Conservancy. Recently McBride has focused his cameras on his backyard river, the Colorado. Four years and 1,500 river miles later, McBride produced a book, filmed three award-winning short documentaries, and hosted a PBS TV program. Kevin Fedarko lives in northern New Mexico and works as a part-time river guide in Grand Canyon National Park. He is the author of the New York Times best seller The Emerald Mile. In addition to his travel narratives in Outside, where he worked as a senior editor, Fedarko's work has appeared in Esquire, National Geographic Adventure, and other magazines.Hampton Sides is editor-at-large for Outside magazine and the author of the international bestseller Ghost Soldiers, which was the basis for the 2005 Miramax film The Great Raid.The Grand Canyon Conservancy is the official nonprofit partner of Grand Canyon National Park, working to support projects including trails and historic building preservation, educational programs for the public, and the protection of wildlife and their natural habitat.