Michael F. Hughes is the Supervisory Toxicologist of the Experimental Toxicokinetics and Toxicodynamics Branch within the Center for Computational Toxicology and Exposure of the U.S. Environmental Protection Agency. He received his Ph.D. in Toxicology from the University of Kentucky in 1986. Dr. Hughes is a Diplomate of the American Board of Toxicology. He has been conducting laboratory research for 30 years in support of the Agency's regulatory decisions. His research interests include studying the toxicokinetcs and toxicological effects of environmental chemicals such as arsenic, pyrethroids, PFAS, and other contaminants.