W. O. Criminale is Professor Emeritus in the Department of Applied Mathematics at the University of Washington. His research focuses on the areas of initial-value problems in shear flows, large-scale oscillations in turbulent flows, mixing, and nonlinear mechanics. Professor Criminale is the recipient of many honors, which include: the Alexander von Humboldt Senior Research Award; Fellow, American Physical Society; Guest Scientist, Stanford–Ames Turbulence Research Center; the Faculty Research Award, Battelle Pacific Northwest Laboratories; and Royal Society Fellow in the UK.