Steve Roberts is Director of the Center for Environmental and Human Toxicology at the University of Florida and is Professor of Toxicology with joint appointments in the College of Veterinary Medicine, College of Medicine, and College of Public Health and Health Professions. He received his Ph.D. from the University of Utah College of Medicine in 1977 and subsequently completed an NIH individual postdoctoral fellowship in pharmacokinetics at SUNY Buffalo. His teaching responsibilities at the University of Florida include graduate courses in toxicology and risk assessment, as well as invited lectures in other graduate and professional courses. Dr. Roberts currently serves on the Chartered Science Advisory Board of the U.S. EPA and the Science Advisory Board of the National Center for Toxicological Research of the U.S. FDA. He also serves as an advisor on risk assessment issues to the Florida Department of Environmental Protection. He is responsible for the toxicology research program for the University of Florida's new Center for Nano-Bio Sensors, as well as specific research projects on the biological fate and effects of nanomaterials. He is currently on the editorial advisory board for the journal Nanotoxicology, among others.