Nora D. Volkow is director of the National Institute on Drug Abuse at National Institutes of Health. She pioneered the use of brain imaging to investigate the effects of drugs in the human brain and has demonstrated that drug addiction is a brain disease. She has published more than 600 scientific articles and edited three books. Volkow has received multiple awards, including membership in the Institute of Medicine, and has been named one of TIME magazine’s Top 100 People Who Shape our World. She was included as One of the 20 People to Watch by Newsweek magazine and named Innovator of the Year by US News & World Report.