We develop a theory of blockchain governance. In our model, the proof-of-work system, which is the most common set of rules for validating transactions in blockchains, creates an industrial ecosystem with specialized suppliers of goods and services. We analyze the two-way interactions between...

Many environmental-policy problems are characterized by complexity and uncertainty. Government's choice concerning these policies commonly relies on information provided by a bureaucracy. Environmental bureaucrats often have a political motivation of their own, so they might be tempted to...

Using a large, original database of 385 politically connected firms under the Mubarak regime in Egypt, we document for the first time the negative impact of cronyism on economic growth. In the early 2000s, a policy shift in Egypt led to the expansion of crony activities into new, previously...