Nathaniel Baum-Snow received his Ph.D. in Economics from the University of Chicago in 2005. Baum-Snow has been affiliated with the Population Studies and Training Center at Brown University since 2005. He is also affiliated with Spatial Structures in the Social Sciences (S4) and is a Faculty Research Fellow at the National Bureau of Economic Research. Baum-Snow is currently working to better understand trends in the spatial distribution of population and employment in U.S. metropolitan areas. In particular, he is investigating the role of transportation infrastructure in the location decisions of firms and households. In addition, he has investigated the role of local public goods such as school quality in determining residential location decisions by race. In addition, in collaboration with Ronni Pavan (University of Rochester), Baum-Snow has completed an NSF grant to study reasons behind urban wage premia.