Carolyn E. Johns is Associate Professor of Environmental Studies. She received a B.S. from Colby College and a Ph.D. in Botany from the University of Montana. Dr. Johns teaches courses in air and water pollution, sustainable agriculture, and environmental backlash. Her research focuses on the uptake of heavy metals by bivalves in freshwater ecosystems. Most of her work takes place in the St. Lawrence River, and has received international acclaim for its originality and significance. She presents this work annually at meetings of the Society for Ecological Toxicology and Contamination and has published it in major scientific journals on the Great Lakes.