Stephen M. Roberts, Ph.D. is Director of the Center for Environmental & Human Toxicology at the University of Florida, and is a Professor with joint appointments in the College of Veterinary Medicine, College of Medicine, and the College of Public Health and Health Professions. He received his Ph.D. from the University of Utah College of Medicine, and has developed an active research career focusing on mechanisms of toxicity of drugs and chemicals with funding from the National Institutes of Health, the U.S. Environmental Protection Agency, the Department of Defense, and private industry. He has served on a federal scientific advisory committees dealing with matters related to toxicology for the U.S. Department of Health and Human Services, the Food and Drug Administration, and the U.S. Environmental Protection Agency.James P. Kehrer Ph.D received a B.S. in pharmacy from Purdue University and a Ph.D. in pharmacology/toxicology from the University of Iowa College of Medicine. He did postdoctoral work at Oak Ridge National Laboratory and served on the faculty at the University of Texas at Austin for 25 years. He is currently Dean of the Faculty of Pharmacy and Pharmaceutical Sciences at the University of Alberta. Dr. Kehrer has served on numerous NIH grant review panels, as a member of the US-EPA Science Advisory Board Exposure and Human Health Committee, and on the US-FDA Nonprescription Drug Advisory Committee.He served as Editor-in-Chief of Toxicology Letters for 21 years. He is a Fellow of the American Association for the Advancement of Science.Lars-Oliver Klotz, Ph.D. is a Professor of Nutrigenomics at Friedrich Schiller University in Jena, Germany. His research interests include the biochemistry of oxidative stress and stress-induced signal transduction. Following his Diploma degree in biochemistry (University of Tübingen), he received a Ph.D. in biochemistry from the University of Düsseldorf (1998). He was a postdoctoral fellow at the National Institute on Aging in Baltimore, USA, and returned to Düsseldorf to establish a laboratory at the Dept. of Biochemistry and Molecular Biology and, later, the Leibniz Research Institute for Environmental Medicine. In 2010, he moved to the University of Alberta, Edmonton, Canada, where he was an Associate Professor and Canada Research Chair at the Faculty of Pharmacy and Pharmaceutical Sciences. In September 2013, Dr. Klotz assumed his current position as chair of the Department of Nutrigenomics at the University of Jena.