Climate change is one of the key challenges facing the international community. The world’s industrial countries and those with economies in transition have, under the 1997 Kyoto Protocol, collectively agreed sharp limitations of their greenhouse gas emissions. Innovative provisions in this...

Unless corporations prioritize climate change mitigation, efforts to control global warming will fail. Yet, the strategies that have been proposed for enlisting corporations are insufficient to the task. In our era of political polarization, a comprehensive “Green New Deal” to transition the...

We analyze a repeated game in which countries are polluting as well as investing in technologies. While folk theorems point out that the first best can be sustained as a subgame-perfect equilibrium when the players are sufficiently patient, we derive the second best equilibrium when they are...