P. Surdas Mohit earned a Ph.D. in Earth and planetary science from Washington University in St. Louis in 2007 and is now a postdoctoral research associate@the Scripps Institution of Oceanography. His research focuses on viscoelastic deformation in various solar-system bodies. In addition to his scholarly papers, Mohit has published popular articles in, for example, the Christian Science Monitor, the Vancouver Sun and the Toronto Star. Address: Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093