Timothy D. Stark is a Professor of Civil and Environmental Engineering at the University of Illinois Urbana-Champaign, specializing in Geotechnical Engineering. His research and teaching focus on the static and seismic stability of natural and engineered slopes—such as dams, levees, floodwalls, and waste containment facilities—as well as railroad geotechnics, geosynthetics, soil liquefaction, and dredged material stabilization. His interdisciplinary work bridges research and practice through numerous applied projects.Dr. Stark’s current research includes three-dimensional slope stability, landslide inverse analysis, heating events in waste facilities, and jet grouting. He has received extensive recognition for his contributions, including the ASCE George H. Norman Medal (2019), Thomas A. Middlebrooks Award (1998, 2013), Walter L. Huber Research Prize (1999), and multiple ASTM R.S. Ladd Awards. He is a Fellow and Diplomate of the ASCE and a University Scholar at Illinois.