Steven N. Austad, Ph.D., is the senior scientific director of the American Federation for Aging Research, the co-principal investigator of the National Institute of Aging’s Nathan Shock Centers of Excellence Coordinating Center, and a distinguished professor and department chair in the Department of Biology at the University of Alabama at Birmingham. He is author of more than 190 scientific articles and more than 100 newspaper columns on science. Follow him on Twitter @StevenAustad.