Jonathan D. Phillips, PhD, is Professor Emeritus of Earth Surface Systems at the University of Kentucky. He taught there for 20 years and previously held faculty positions at Texas A&M, East Carolina, and Arizona State Universities. He has published more than 250 journal articles, books, and book chapters in several areas of the earth, environmental, and ecological sciences, and is the recipient of distinguished career awards from the British Society for Geomorphology and the Geomorphology Specialty Group of the American Association Geographers.