Menachem Elimelech is the Sterling Professor of Environmental and Chemical Engineering at Yale University. In 1998, he founded Yale's Environmental Engineering program. The program rose to international prominence and has been ranked in the top 10 of the U.S. News & World Report’s Graduate Engineering Rankings for the past six years. Elimelech specializes in problems involving physicochemical, colloidal, and microbial processes in engineered and natural environmental systems.