Devra DavisDevra Davis, Ph.D., M.P.H., is a scientist, professor, speaker, and acclaimed author. She recently testified before a U.S. Senate committee panel about the dangers of cell phone use. Her first book, When Smoke Ran Like Water, was a National Book Awar finalist. Currently a visiting professor at Mount Sinai Medical Center in New York City, Devra lives in Washington, D.C., and Jackson, Wyoming. Read More Read Less