Working Papers "Airports, Air Pollution, and Contemporaneous Health" (with W. Reed Walker) "Climate Change, Crop Yields, and Internal Migration in the United States" (with Shuaizhang Feng and Michael Oppenheimer) "Corn Production Shocks in 2012 and Beyond: Implications for Food Price Volatility" (with Steven T. Berry and Michael J. Roberts) "Something in the Water: Contaminated Drinking Water and Infant Health" (with Janet Currie, Joshua S. Graff Zivin, Katherine Meckel, and Matthew J. Neidell)