David O. Norris is Professor Emeritus at the University of Colorado. He obtained his BS from the Baldwin-Wallace University and his PhD from the University of Washington. His broad research areas include environmental endocrinology and forensic botany. In the area of environmental endocrinology, his studies have focused on the neuroendocrine control of thyroid, adrenal, and reproductive functions with special interest in the role of environmental factors that alter the activities of these neuroendocrine systems.Dr. James Carr is Professor at Texas Tech University. He obtained his BSc at Rutgers University and his PhD at the University of Colorado. He studies neuroendocrinology and the environmental endocrinology of amphibians and fishes, and he has taught courses in physiology, endocrinology, histology, and neurobiology. His endocrine research focuses on the neuroendocrinology of stress, the role of visual system neuropeptides in behavioral tradeoffs, and lab and field studies into the role of EDCs that adversely influence thyroid and reproductive physiology.