We construct a matrix showing the share of the year 2000 population in every country that is descended from people in different source countries in the year 1500. Using this matrix, we analyze how post-1500 migration has influenced the level of GDP per capita and within-country income inequality...

GDP growth is often measured poorly for countries and rarely measured at all for cities. We propose a readily available proxy: satellite data on lights at night. Our statistical framework uses light growth to supplement existing income growth measures. The framework is applied to countries with...

"In this essay I propose that the adoption of the U.S. dollar as a common currency shortly after the ratification of the Federal Constitution and the accompanying transition from a fiat to specie standard was a pivotal moment in the nation's early history and marked an improvement over the...