David Keith, Harvard University (IMAGE) Harvard University Caption David Keith holds appointments as Gordon McKay Professor of Applied Physics at the Harvard School of Engineering and Applied Sciences and as Professor of Public Policy at Harvard Kennedy School. Credit Eliza Grinnell, Harvard SEAS Communications Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.