Alan I. Leshner, Ph.D., is Chief Executive Officer, Emeritus of the American Association for the Advancement of Science (AAAS) and Executive Publisher of its journal, Science. Previously Dr. Leshner had been Director of the National Institute on Drug Abuse at the National Institutes of Health (NIH), and Deputy Director and Acting Director of the National Institute of Mental Health. Before that, he held a variety of senior positions at the National Science Foundation. Dr. Leshner began his career at Bucknell University, where he was Professor of Psychology. Dr. Leshner is an elected member (and on the governing Council) of the Institute of Medicine of the National Academies of Science, and a fellow of AAAS, the National Academy of Public Administration, and the American Academy of Arts and Sciences. He was appointed by the U.S. President to the National Science Board. He received an A.B. in Psychology from Franklin and Marshall College and M.S. and Ph.D. in Physiological Psychology from Rutgers University. Dr. Leshner has been awarded six honorary Doctor of Science degrees.