The Paris Agreement, adopted by the Parties to the United Nations Framework Convention on Climate Change (UNFCCC), reinforces the international framework for adaptation action by establishing a global adaptation goal. Under the Paris Agreement, countries have also agreed to an enhanced...

Limiting the increase in global average temperature to below 2°C compared to pre-industrial levels will require ambitious mitigation action by a broad range of actors including Parties to the United Nations Framework Convention on Climate Change (UNFCCC), i.e., national governments, and...

An important source of political opposition to measures aimed at reducing emissions of greenhouse gases (GHGs) arises from concerns over their negative effects on the competitiveness of domestic firms, especially those that are energy-intensive and exposed to competition from foreign producers....

Many countries have pledged targets or actions to reduce greenhouse gas emissions; these have been listed in the Appendices to the Copenhagen Accord and, at the time of writing, are being transferred to the UNFCCC Cancún Agreements. This analysis examines the costs and effectiveness of these...

We model dynamic mechanisms for a global commons. Countries benefit from both consumption and aggregate conservation of an open access resource. A country's relative value of consumption-to-conservation is privately observed and evolves stochastically. An optimal quota maximizes world welfare...

This paper formulates a dynamic model of global carbon consumption in the absence of an effective international agreement. Each period, countries extract carbon from the global ecosystem. A country's output depends both on its carbon usage and on the ecosystem ("stored carbon"). The desired mix...

Mankind must cooperate to reduce GHG emissions to prevent a catastrophic rise in global temperature. How can the necessary costs of reducing GHG emissions be allocated across regions of the world, within the next few generations, and simultaneously address growth expectations and economic...

Comme les objectifs ambitieux de la stratégie de Lisbonne, il semble qu’à ce jour, la lutte contre le changement climatique souffre, en Europe, d’un manque d’instruments et d’une mise en œuvre collective. Il revient à la France, qui préside l’Union européenne pour un semestre à...