Biographical note

Kenneth Button BA (East Anglia), MA (Leeds), PhD (Loughborough), FILT, FIHT, FCITI is Professor of Public Policy, Director of the Center for Transportation Policy and Operations, and Director of the Center for Aerospace Policy in the School of Public Policy, George Mason University, USA. He has published, or has in press, some 80 books. He is editor of the academic journals Transportation Research D: Transport and the Environment and the Journal of Air Transport Management . Julianne Lammersen-Baum is currently affiliated with the George Mason University School of Public Policy, and holds an MA (Georgetown University) and BA (Loyola Marymount University). Recently she has been involved with the George Mason University NASA/Continuing Career Program and has been responsible for publication of the final report on Spaceport Infrastructure Handbook produced under a joint agreement with the National Aeronautics and Space Administration. She has extensive experience in consultancy work in the field of economic analysis. Roger Stough is the Director of the Center for Regional Analysis and the Transportation and Aviation Policy Programs, and Associate Director of the Institute of Public Policy, at George Mason University, USA. He holds the Northern Virginia Endowed Chair in Public Policy. He holds a BS in International Trade and Economics from Ohio State University; an MA in Economic Geography from the University of South Carolina; and a Ph.D. in Geography and Environmental Engineering from Johns Hopkins University.