We study the nature of monetary policy in a model where uncertainty can lead to a discrepancy between economic agents' beliefs and true fundamentals. Monetary policy transmits information about fundamentals. The public nature of this information can help agents to coordinate their decisions....

We study a dynamic stochastic general equilibrium model where agents are concerned about model uncertainty regarding climate change. An externality from greenhouse gas emissions adversely affects the economys capital stock. We assume that the mapping from climate change to damages is subject to...

We use mechanism design in order to study efficient arrangements when the ability of agents to perform certain welfare-improving transactions is subject to random and unobservable shocks. We study implementation via a payment system that involves assigning balances to participants and optimally...

We study a dynamic stochastic general equilibrium model where agents are concerned about model uncertainty regarding climate change. An externality from greenhouse gas emissions adversely affects the economy’s capital stock. We assume that the mapping from climate change to damages is subject...

Emissions trading mechanisms have been proposed, and in some cases implemented, as a tool to reduce pollution. We explore the similarities between emission-trading mechanisms and monetary mechanisms. Both attempt to implement desirable allocations under various frictions, including risk and...