He joined the Ashland University faculty in 2009. His research interests include the effects of pesticide contaminant mixtures to freshwater aquatic organisms in the environment, as well as the effects of physical and chemical stress to the toxicity of organic sediment-based contaminants. Dr. Trimble has previously been the recipient of a U.S. Environmental Protection Agency Greater Research Opportunity fellowship and has published his research in a number of peer-reviewed journals. The courses that Dr. Trimble teaches include ecology and the human environment, principles of toxicology and methods in toxicology. He received his B.S. degree in chemistry and Ph.D. in zoology from Southern Illinois University Carbondale. Education