Low adoption of agricultural technologies holds large productivity consequences for developing countries. Agricultural extension services counter information failures by deploying external agents to communicate with farmers. However, social networks are recognized as the most credible source of...

Low adoption of agricultural technologies holds large productivity consequences for developing countries. Agricultural extension services counter information failures by deploying external agents to communicate with farmers. However, social networks are recognized as the most credible source of...

Unpredictable rainfall is an important risk for agricultural activity, and farmers in developing countries often receive incomplete insurance from informal risk-sharing networks. We study the demand for, and effects of, offering formal index-based rainfall insurance through a randomized...

We propose a theory-inspired measure of the accessibility of a city's center: the size of the surrounding area from which it can be reached within a specific time. Using publicly available optimal-routing software, we compute these "accessibility zones" for the 109 largest US and European...