W. Walker Hanlon is an Associate Professor in the Economics Department at Northwestern University. His research focuses on understanding how economies evolve over the long-run using novel historical data. He is particularly interested in questions related to technological progress, urbanization, demography, international trade, and the environment. Before joining Northwestern, Professor Hanlon spent four years working at NYU’s Stern School of Business, one year as a Kenen Fellow at Princeton University from 2016-2017, and was an Assistant Professor at UCLA from 2012-2016. He has been a Faculty Research Fellow at the National Bureau of Economic Research since 2012 and at CEPR since 2020. Professor Hanlon received his B.A. from Stanford University and a Ph.D. degree in Economics from Columbia University.