Vannevar Bush (1890-1974) was director of the US Office of Scientific Research and Development during World War II. He was also president of the Carnegie Institution for Science and chairman of the National Advisory Committee for Aeronautics. Rush D. Holt is CEO emeritus of the American Association for the Advancement of Science. He served in the US House of Representatives from 1999 to 2015; was head of the Office of Strategic Forces' Nuclear and Scientific Division, US Department of State; and has been assistant director of the Princeton Plasma Physics Laboratory. Twitter @RushHolt