Lon Abbott is a geology faculty member at the University of Colorado at Boulder whose recent research has focused on the cutting of the Grand Canyon and the formation of the Colorado Rockies. He received a bachelor's degree in geology and geophysics from the University of Utah and a PhD in earth science from the University of California, Santa Cruz, where he specialized in the study of mountain building. Lon's research has taken him from remote mountain peaks in Papua New Guinea to a 15,000-foot-deep ocean trench near Costa Rica.