Dr. Andy May is currently an Associate Professor in Environmental Engineering. His research mainly focuses on atmospheric particulate matter, with current foci on both the study of climate-relevant black carbon particles and the application of low-cost particle sensors to monitor urban environments. He also conducts studies on airborne per- and poly-fluorinated alkyl substances (PFAS). He collaborates with other researchers within his department on problems related to indoor environmental quality, transportation systems, and water quality, as well as outside his department, including atmospheric scientists, chemists, computer scientists, environmental health scientists, geographers, integrated systems engineers, and sociologists. Andy holds a BE in Chemical Engineering from the University of Delaware, an MS in Civil and Environmental Engineering from Clarkson University, and a PhD in Mechanical Engineering from Carnegie Mellon University. He was a post-doctoral researcher in the Department of Atmospheric Science at Colorado State University prior to joining OSU.