Dan Loughlin is a senior physical scientist in the U.S. EPA’s Office of Research and Development, where he has conducted energy system and integrated assessment modeling for more than twenty years. Dan leads the GLIMPSE project (https://epa.gov/glimpse), an effort to develop computational tools for supporting long-term air quality, climate, and energy planning. Dan is an author of the Energy Chapter of the 5th and 6th National Climate Assessments. He has a doctoral degree from NC State University and is an adjunct professor at Duke University where he teaches a course on Integrated Assessment Modeling.