David Keith, Harvard University (IMAGE) Harvard University Caption David Keith is Gordon McKay Professor of Applied Physics at the Harvard School of Engineering and Applied Sciences, and Professor of Public Policy at the John F. Kennedy School of Government at Harvard. 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.