Alan T. Stone is a professor in the Department of Geography and Environmental Engineering at the Whiting School of Engineering. Using the foundations of organic chemistry, inorganic chemistry, physical chemistry, and the nanosciences, Stone explores natural biogeochemical phenomena and properties/transformations of synthetic chemicals in environmental media. He also is interested in engineered systems and the consequences of human activities. Chemicals used in agriculture, animal production, forestry and aquaculture, as well as large volumes of water used for cooling, paper making and water supplies are a special interest.