Dan Jaffe is an expert on global transport of pollutants, especially from Asia to the United States. He has published several papers on the influence of background sources on regional and urban air quality. He recently participated on the panel for the National Academy of Science’s study on The Significance of Intercontinental Transport of Air Pollutants and was chosen as the Fulbright Distinguished Chair in Environmental Sciences. His research has been funded by the National Science Foundation, NOAA, NASA, EPA and industry partners. Recently, Dan has funded several projects via crowdfunding. His current projects include studying ozone and particulate matter from global and regional air pollution sources at the Mt. Bachelor Observatory, studying the impacts of wildfires on air quality in the Western U.S. and the impacts from diesel powered and coal trains.