AOS Professor Suzanne Paulson was featured on Phys.org discussing how to measure street-level air quality in Los Angeles and methods the city could do to improve the air quality on the sidewalk level. Los Angeles currently has one of the worst air quality levels in the nation. The study Professor Paulson and her team concluded that buildings and open spaces make a big difference in air quality on the ground.
Source: https://phys.org/news/2016-05-la-loom-large-street-level-air.html