About the Author
William Nothdurft is the author, coauthor, or ghostwriter of nearly a dozen books, including the award-winning Ghosts of Everest, about the search for the missing mountaineers George Mallory and Andrew Irvine. Josh Smith served six years in the U.S. Army before getting his B.Sc. from the University of Massachusetts and an M.Sc. and Ph.D. in paleontology from the University of Pennsylvania. He is currently an assistant professor at Washington University.