Steffen Kallbekken and Torben K. Mideksa explain why economic analysis may demand sharp emissions reductions today rather than the gradual path recommended by Sheila Olmstead and Robert Stavins.

A simple dynamic game is used for analyzing international environmental problems and climate agreements. Different countries are, over time, emitting as well as investing in green technology. In this framework, we can analyze the business-as-usual outcome, short vs. long term agreements,...

Below, I illustrate how a wide range of political economics forces influence nations' provisions of global public goods. The forces can make it difficult for international cooperation to succeed, but they can also be taken advantage of by carefully designed treaties, so that they are stronger...