Stanley E. Manahan is Professor Emeritus of Chemistry at the University of Missouri-Columbia, where he has been on the faculty since 1965. He received his A.B. in chemistry from Emporia State University in Kansas in 1960 and his Ph.D. in analytical chemistry from the University of Kansas in 1965. Since 1968, his primary research and professional activities have been in environmental chemistry, with recent emphasis on hazardous waste treatment. His latest research has involved gasification of wastes and gasification of sewage sludge and crop byproduct biomass for energy production. He is the author of approximately 90 research papers. Professor Manahan has taught courses on environmental chemistry, hazardous wastes, toxicological chemistry, and analytical chemistry and has lectured on these topics throughout the U.S. as an American Chemical Society Local Sections tour speaker and in a number of countries including France, Italy, Austria, Japan, Mexico, and Venezuela. Since 1970, Professor Manahan has written a number of books in his areas of expertise including printed works and more recently electronic versions. His longest standing and most popular book has been Environmental Chemistry, the first of its kind, initally published in 1972 through numerous editions of which this work is the 11th edition. Other topics on which the author has written books include general chemistry, applied chemistry, toxicological chemistry, toxicology, quantitative chemical analysis, sustainable chemical science, green chemistry, water chemistry, energy, environmental geology and geochemistry, global climate change, environmental and sustainability science, the anthrosphere and the anthropocene epoch, hazardous wastes, and industrial ecology.