The commonly-used satellite images of nighttime lights fail to capture the true brightness of most cities. We show that night lights are a reliable proxy for economic activity at the city level, provided they are first corrected for top-coding. We present a stylized model of urban luminosity and...

This paper provides an analytic review of selected contributions to the study of institutions and economic growth. We review the contributions to the study of institutional determinants of long-run growth by Engerman and Sokoloff, and Acemoglu, Johnson and Robinson. We discuss the work of Rodrik...

This paper analyzes periods of economic stagnation in a panel of countries. We test if stagnation episodes are predicted by institutional factors and external/internal shocks, as is implied by recent theoretical contributions, and compare the impacts of these variables with those of traditional...

This paper defines economic slumps as a sequence of structural breaks exhibiting a specific pattern. We identify 58 such episodes between 1950 and 2008 among a large sample of countries, and then examine the phases of decline. In several countries declines last extremely long, and we suggest...

As COVID-19 has spread across the globe, several observers noticed that countries still administering an old vaccine against tuberculosis—the BCG vaccine—have had fewer COVID-19 cases and deaths per capita in the early stages of the outbreak. This paper uses a geographic regression...