Clifford V. JohnsonClifford V. Johnson obtained his BSc in physics at Imperial College, University of London, and his PhD in theoretical physics from the University of Southampton. He won a 1992 Lindeman Fellowship and a 1992 SERC NATO Fellowship, and became a member o the School of Natural Sciences at the Institute for Advanced Study, Princeton. He then spent a year teaching and undertaking research at the Physics Department of Princeton University, and went on to hold a postdoctoral position at the Institute for Theoretical Physics, University of California, Santa Barbara. He was then Assistant Professor at the University of Kentucky and Reader in Theoretical Physics at Durham University. He is currently a professor in the Physics and Astronomy Department at the University of Southern California. Read More Read Less