Read about how Professor Robert Harley's research helped correct pollution estimates in the October 8 San Francisco Chronicle article, "Overestimate fueled state's landmark diesel law."
This research was conducted by Prof. Harley and his Ph.D. student Dev Millstein, who has now graduated and is working at Lawrence Berkeley National Laboratory. Their research paper (Millstein and Harley, 2009) was published late last year in Atmospheric Environment.