Dr. Marsha C. Black is an Associate Professor and Interim Department Head for the Department of Environmental Health Science (EHS). She teaches courses in water pollution, aquatic toxicology and environmental issues in the developing world. Dr. Black is an aquatic toxicologist and her research focuses on the use of aquatic organisms as pollution biomonitors and the development and use of biomarker assays to detect physiological and biochemical responses of these organisms to pollution stress. Her current research is funded by the US EPA and USGS and focuses on the ecotoxicity of pharmaceutical compounds released to aquatic environments, differential toxicity of chiral pesticides to daphnids, fish and amphibians, and evaluating the effects of trace metal contamination on resident mussel populations in Georgia rivers. She has served on the Board of Directors for the Society of Environmental Toxicology and Chemistry (SETAC), the editorial board of Environmental Toxicology and Chemistry and serves as a reviewer for several journals in environmental toxicology and environmental health. She has also served on grant and fellowship panels for the US EPA, National Science Foundation and the Academy of Finland and on the program review team at the United Arab Emirates University, Al-Ain, UAE.