Dr. Gall's research and teaching investigates phenomena in built environments that affect indoor and urban environmental quality. Research and teaching in Dr. Gall's group ultimately seeks to develop new approaches that improve building sustainability through an understanding of the intersection of building energy use, indoor air quality, and occupant well-being. Specific research areas include: i) fundamental laboratory and field studies of indoor air pollutant transport and transformation, ii) air pollution exposure assessment through modeling and personal exposure studies, and iii) evaluation of building technology and design with respect to indoor environmental quality.