Roger D. Borcherdt is a research scientist at the U.S. Geological Survey and consulting professor, Department of Civil and Environmental Engineering at Stanford University, where he also served as visiting Shimizu Professor. He holds B.A. and M.A. degrees in theoretical mathematics from the Universities of Colorado and Wisconsin and M.S. and Ph.D. degrees in Engineering Geoscience with minors in Applied Mathematics and Theoretical Statistics from the University of California at Berkeley. He is the author of more than 150 scientific publications including several on the theoretical and empirica...