Coronavirus News Roundup: September 19–September 25 Scientific American September 25, 2020 Charles Haas, PhD, LD Betz professor of Environmental Engineering in the College of Engineering, was mentioned in a Sept. 25 Scientific American post about guidance he put together with more than 50 indoor air quality experts and other scientists to help people understand how to protect themselves from COVID-19 aerosol transmission. View Story Topical Tags: College of Engineering environmental engineering Share Related