A CityLab story on the city of Los Angeles’ efforts to pursue “cool pavement” technologies to address rising urban temperatures featured the research of V. Kelly Turner, assistant professor of urban planning. While other cool pavement studies have measured surface and air temperature, Turner’s research is the first to focus on “mean radiant temperature,” which is most related to thermal comfort. Turner and Ariane Middel, assistant professor of arts media and engineering at Arizona State University, studied unshaded streets in Pacoima and Sun Valley that had been coated with an asphalt mixture called CoolSeal, which reflects, rather than absorbs, the energy from sunlight. They measured air temperature, wind speed, humidity and radiation from morning to sundown, and their preliminary findings will soon be published by the American Meteorological Society. The project is one part of a greater effort to collect data on the effectiveness of strategies to address so-called urban heat islands.