Third-hand Smoke Could Linger for Decades, Study Reports June 25, 2018 Michael Waring, PhD, an associate professor in the College of Engineering, was quoted in a June 25 Science Recorder post about his research with Peter DeCarlo, PhD, also an associate professor in the College, and Anita Avery, PhD, who was a doctoral student in the college, on the persistence of third-hand smoke chemicals indoors. View Story Topical Tags: College of Engineering Share Related