We measure the level and growth of education segregation in American workplaces from 2000 to 2020. American workplaces show an educational segregation, measured by the degree to which the establishment has mostly workers of similar education levels, that is comparable to racial residential...

We document a Kuznets curve for construction productivity in 20th-century America. Homes built per construction worker remained stagnant between 1900 and 1940, boomed after World War II, and then plummeted after 1970. The productivity boom from 1940 to 1970 shows that nothing makes technological...

Urbanization is undoubtedly a key driver of development-cities provide the national platform for prosperity, job creation, and poverty reduction. But urbanization also poses enormous challenges that one is familiar with: congestion, air pollution, social divisions, crime, the breakdown of public...

The past three decades have been characterized by vast change and crises in global financial markets—and not in politically unstable countries but in the heart of the developed world, from the Great Recession in the United States to the banking crises in Japan and the Eurozone. As we try to...

Public capacity complements urban density because externalities abound in cities and urban scale makes it possible to share infrastructure that needs to be managed. Yet, urban governments face limitations that are not experienced by private sector entities. A city cannot just stop policing if it...