We develop a novel method for assessing the effect of constraints imposed by spatially-fixed natural resources on aggregate economic output. We apply it to estimate and compare the projected effects of climate change and population growth over the course of the 21st century, by country and...

We describe patterns of urbanization in the developing world and the extent to which they differ from the developed world. We consider the extent to which urbanization in the developing world can be explained by conventional models of spatial equilibrium. Despite their relative poverty,...

This paper examines unintended effects of air quality regulation on decisions of major polluters, using plant data for 1963 to 1992. A key regulatory tool since 1978 is the annual designation of county air quality attainment status, where non-attainment status triggers specific equipment...

We develop a new measure of land quality by estimating weights in a Poisson regression of population in grid cells on a vector of geographic characteristics and country fixed effects. Aggregating to the level of countries, we construct average land quality (ALQ) and quality-adjusted population...

We develop a new measure of land quality by estimating weights in a Poisson regression of grid-cell population on geographic characteristics and country fixed effects. Aggregating to countries, we construct average land quality (ALQ) and quality-adjusted population density (QAPD). We show:...