James G. Speight, Ph.D. is the CEO of Western Research Institute with 25 years experience in environmental technology. He has authored several books and numerous articles on the subject. Sunggyu Lee, Ph.D. is currently Chairman and C.W. LaPierre Professor of Chemical Engineering at the University of Missouri-Columbia. His research in the areas of Energy, Environment, Polymers and Process Engineering has been published in several textbooks, research monographs and articles.