Opioid addiction and mortality skyrocketed over the past decade. A casual look at the geographic incidence of opioid mortality shows sharply higher mortality rates in the Appalachian region, especially in coal-mining areas. This has led observers to make a link that was characterized by one...

Standard dynamic models of structural transformation, without knife-edge and counterfactual parameter values, preclude balanced growth path (BGP) analysis. This paper develops a dynamic equilibrium concept for a more general class of models -- an alternative to a BGP, which we coin a Stable...

Industrialization experiences differ significantly across countries. We use a bench-mark model of structural change to shed light on the sources of this heterogeneity and, in particular, the phenomenon of premature deindustrialization. Our analysis leads to three key findings. First, benchmark...

This paper integrates local temperature treatment effects and a quantitative macroeconomic model to evaluate the impact of climate change on sectoral reallocation and aggregate productivity. First, I use firm-level data from a wide range of countries to estimate the effect of temperature on...

Historically, innovation in the energy sector proceeded slowly and entrepreneurial start-up firms played a relatively minor role. We argue that this may be changing. Energy markets are going through a period of profound structural change. The rise of hydrofracturing lowered fossil fuel prices so...

U.S. agriculture was transformed during the 20th century by waves of innovation with mechanical, biological, chemical, and information technologies. Compared with a few decades ago, today's agriculture is much less labor intensive and farms are much larger and more specialized, supplying a...

The Great Migration from the US South is a prominent theme in economic history research not only because it was a prime example of large scale internal migration, but also because it had far-reaching ramifications for American economic, social, and political change. This essay offers a concise...

In this chapter we draw from existing literature and a range of statistics to describe economic, entrepreneurial and innovative activities in the transportation and warehousing sector of the U.S. economy. We suggest multiple avenues for future work, and argue for more research on the role of...