The nonrivalry of ideas gives rise to increasing returns, a fact celebrated in Paul Romer's
recent Nobel Prize. An implication is that the long-run rate of economic growth is the product …

We conduct a randomized experiment that generates exogenous variation in the access to
foreign markets for rug producers in Egypt. Combined with detailed survey data, we causally …

Can targeting information to network-central farmers induce more adoption of a new
agricultural technology? By combining social network data and a field experiment in 200 …

We investigate the effects of the recently constructed Chinese national highway system on
local economic outcomes. On average, roads that improve access to local markets have …

Geopolitical conflicts have increasingly been a driver of trade policy. We study the potential
effects of global and persistent geopolitical conflicts on trade, technological innovation, and …

We study the impact of intersectoral and interregional trade linkages in propagating
disaggregated productivity changes to the rest of the economy. Using US regional and …

We provide a tractable, quantitatively‐oriented theory of innovation and technology diffusion
to explore the role of international trade in the process of development. We model innovation …

The literature on knowledge diffusion shows that knowledge decays strongly with distance.
In this paper we document that the probability that a product is added to a country's export …

How does globalization affect economic growth? We discuss mechanisms that link
international integration to the incentives for knowledge accumulation and the efficacy of that …

We examine the golden age of US innovation by undertaking a major data collection
exercise linking historical US patents to state and county-level aggregates and matching …