Part 3 of the TED Radio Hour episode Simple SolutionsAbout Wendy Troxel's TED TalkSleep expert Wendy Troxel says teens are sleep-deprived because of early school start times that cater to adults. She says high schools should start classes at least an hour later.About Wendy TroxelDr. Wendy Troxel is a Senior Behavioral and Social Scientist at RAND and Adjunct Professor of Psychiatry and Psychology at the University of Pittsburgh. She is a licensed clinical psychologist specializing in behavioral treatments for insomnia and other sleep disorders.Her research focuses on the interface between sleep and health, as well as the implications for public policy. She is considered a leading authority on the connection between sleep and relationships. Copyright 2017 NPR. To see more, visit http://www.npr.org/.