In this seminar, we review current scientific understanding of the linkages between climate change and air pollution. Topics include short-lived climate forcers, climate sensitivity, impact of air pollution control measures on climate, geo-engineering and solar radiation management, metrics used in climate policy, and future climate change impacts on air quality in the United States and other regions. Active student participation is required. Meetings are divided between lecture, student presentation, structured discussion, and invited outside speakers. The course includes a group project to develop plausible multi-pollutant climate mitigation strategies that address key sectors in different world regions.