Prof. Dr. Haider A. Khwaja is an Associate Professor of Environmental Health Sciences and a Senior Research Scientist at the New York State Department of Health's Wadsworth Center. After getting his PhD from the University of New Brunswick, he completed a research associate project on stratospheric ozone layer depletion with Prof. F. Sherwood Rowland (Nobel Laureate, Chemistry, 1995). His research and teaching interests lie in the field of Environmental Health. His active research programs include the study of multidisciplinary environmental chemistry related to air and water quality and their impact on human health, sources and fate of chemical contaminants, cloud water chemistry, and acid rain.