Joseph P. Greene, PhD, is Professor Emeritus in the Mechanical and Mechatronic Engineering and Sustainable Manufacturing Department at California State University, Chico. He received a Ph.D. in Chemical Engineering in 1993 from the University of Michigan. Joe began teaching at California State University, Chico in 1998 after a 14-year career with General Motors Corporation in Detroit, Michigan. His research interests include bio-based and biodegradable polymers, recycled plastics, marine biodegradation testing, and anaerobic digestion.