We estimate the urban wage premium in the United States from 1940 to 2010. Drawing on recent advances in the literature on selection on unobservables, we show how to control for heterogeneity in the characteristics of individuals that choose to live in cities to address endogenous sorting....

Over the past two decades, the percentage of the world's population living on less than a dollar a day has been cut in half. How much of that improvement is because of-or in spite of-globalization? While anti-globalization activists mount loud critiques and the media report breathlessly on...