Native Coloradan Pete McBride is a Sony Artisan of Light and has traveled on assignment to more than seventy-five countries for the National Geographic Society, Smithsonian, Google, and the Nature Conservancy. He has spoken on stages for TEDx, the World Economic Forum, Pixar, Nat Geo Live, and more. His books The Grand Canyon: Between River and Rim and Seeing Silence both won a National Outdoor Book Award.

Nick Paumgarten is an environmentalist and has been a staff writer at the New Yorker since 2005.

Kevin Fedarko works as a part-time river guide in Grand Canyon National Park. He is the author of the New York Times bestseller The Emerald Mile.