Roger Bilham obtained degrees in Physics and Geology at the University of Wales and Ph. D. in Geophysics from Cambridge University in 1970. He undertook postdoctoral research in Cambridge and Columbia universities before being appointed a Professor of Geology in the University of Colorado in 1986, where he is now an Associate Director of CIRES (NOAA Cooperative Insitute for Research in the Evironmental Sciences). His research (more than 150 scientific articles) is focussed on quantifying the rates of tectonic motion at plate boundaries and the estimation of seismic productivity in Pakistan and India. He was the first to note that most of the world's supercities hosting more than 400 million people are located at plate boundaries that have experienced historical M>7.5 earthquakes, and that a future earthquake, were it to occur near one of these cities could possibly kill a million people in a single event.