This article proposes and evaluates four hypotheses about US pollution and environmental policy over the last half century. First, air and water pollution have declined substantially, although greenhouse gas emissions have not. Second, environmental policy explains a large share of these trends....

We use novel, large-scale data on 43 million Americans from the 2000 Census and the 2001 to 2013 American Communities Survey linked to the Social Security Administration's NUMIDENT to study how a policy-driven increase in economic resources for families affects children's long-term outcomes....

This paper examines the long-term impacts of early childhood exposure to air pollution on adult outcomes using U.S. administrative data. We exploit changes in air pollution driven by the 1970 Clean Air Act to analyze the difference in outcomes between cohorts born in counties before and after...

We use novel, large-scale data on 43 million Americans from the 2000 Census and the 2001 to 2013 American Communities Survey linked to the Social Security Administration’s NUMIDENT to study how a policy-driven increase in economic resources for families affects children’s long-term outcomes....