Professor of History, specializing in history of modern science and technology, University of California, Santa Barbara. 2005-16, Co-PI, with $15 million grant from National Science Foundation, for Center for Nanotechnology in Society, which explored social implications of emerging technologies. Elected Fellow, American Association for the Advancement of Science and American Physical Society. Author of four books, including The Visioneers; Author of book on artist-engineer collaborations (forthcoming). Recipient, 2014 Watson Davis Prize, History of Science Society.