Jerry M. Harris received the Ph.D. degree in electrical engineering from CalTech in 1980. He worked on atmospheric attenuation of microwaves for three years, then after completing the Ph.D. he joined Exxon Production Research Company. At Exxon he worked on adaptive seismic beam steering and polarization methods for use in areas with seismically poor data. He moved to the Standard Oil Company (later BP), where he developed crosswell technologies for reservoir imaging. In 1988 Dr. Harris joined Stanford University where he is currently Professor and Chairman of the Department of Geophysics. In 1992, Professor Harris founded TomoSeis Corporation (now a part of CoreLabs) to commercialize crosswell seismic profiling. His current research interests include experimental methods in high-resolution borehole geophysics, seismic attenuation, and acoustical resonance spectroscopy.