Crowdedness varies widely among U.S. cities. A simple, static general equilibrium model suggests that plausible differences in metro areas' consumption amenities can account for much of the observed variation. Under a baseline calibration, differences in amenities valued at 30 percent of average...

Several Chinese cities have invested billions of dollars to construct new industrial parks. These place based investments solve the land assembly problem which allows many productive firms to co-locate close to each other. The resulting local economic growth creates new opportunities for real...