Dr. Spencer Walse received his PhD in Analytical Chemistry in 2003 from the University of South Carolina, Columbia, SC. He is a Research Chemist employed by the USDA Agricultural Research Service and is located at the USDA San Joaquin Valley Agricultural Science Center, Parlier, CA. His research efforts focus on solving chemically-based problems in agriculture. Research activities involve the development and integration of predictive chemical kinetics, modeling strategies, and field /in situ results as they relate to quantitatively understanding the interaction of molecules with their surroundings. He investigates molecules that are produced naturally, as well as, those that are produced by humans.