Home Climate change impacts Crop production Video: CO2 is Not a Pollutant! Climate change impactsCrop production Video: CO2 is Not a Pollutant! By Andy Singer - August 31, 2018 0 Share FacebookTwitterPinterestEmail David Legates, professor of climatology in the Department of Geography at the University of Delaware, explains why carbon dioxide is not a pollutant. In his view, increasing CO2 levels are a net benefit to the Earth. LEAVE A REPLY Cancel reply Please enter your comment! Please enter your name here You have entered an incorrect email address! Please enter your email address here Save my name, email, and website in this browser for the next time I comment.