Don W. Vasco received his B.S. in geophysics from the University of Texas at Austin in 1981 and his Ph.D. from the University of California at Berkeley in 1987. In 1987 he worked at Berkeley Lab on the inversion of surface deformation to image volume change in the subsurface. For two years (1987-1989) he was a postdoctoral scholar at the Phillips Geophysics Laboratory, working on the inversion of airborne gravity gradiometry observations. During the years 1991-1992 he was a visiting fellow at the Australian National University. In 2000 he received the Cedric K. Ferguson award by the Society of Petroleum Engineers. He is currently a Senior Scientist at Berkeley Laboratory developing and implementing algorithms for geophysical and hydrologic modeling and inversion. Current research interests are inverse theory, asymptotic techniques for modeling flow and transport, modeling coupled processes, the analysis of surface deformation, and techniques for imaging reservoir heterogeneity.