Michael researches how to improve indoor air and environmental quality, as well building sustainability. Much of his focus is on indoor chemical reactions between oxidants and reactive organic gases that generate aerosols. For this research effort, he has been awarded a NSF CAREER Award and an ASRHAE New Investigator Award and Willis H. Carrier Award. He is also interested in novel ventilation strategies that improve IAQ for the lowest energy cost, as well as how indoor microbes respond to building operational states. He teaches courses on IAQ, building sustainability and HVAC systems, and fluid mechanics.