This paper focuses on developing an empirical strategy for measuring the effect of pollution on health. Specifically, I look at the effect of air pollution on children's hospitalization for asthma. Childhood asthma is of particular interest for two reasons: 1) asthma is the leading chronic condition affecting children; and 2) current pollution standards are based on adult health responses to pollution and children face a greater risk from pollution exposure due to the sensitivity of their developing biological systems. This study builds on earlier work in five ways. First, I develop a unique, quarterly, zip.
