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David Weisbach



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July 2012

"International Paretianism: A Defense"

Discussion Paper

By Eric A. Posner and David Weisbach

A treaty satisfies what we call International Paretianism if it advances the interests of all states that join it, so that no state is made worse off. The principle might seem obvious, but it rules out nearly all the major proposals for a climate treaty, including proposals advanced by academics and by government officials. We defend International Paretianism, and for that reason urge commentators in the debate over climate justice to abandon efforts to right past wrongs, redistribute wealth, and achieve other abstract ideals through a climate treaty



July 2010

"Negligence, Strict Liability, and Responsibility for Climate Change"

Discussion Paper

By David Weisbach

This paper reexamines responsibility for climate change. Claims of responsibility are based on legal and ethical principles concerning liability for wrongdoing. They are, in essence, tort claims. Tort-law principles might be used in actual legal disputes, to make quasi-legal arguments in a negotiation, or to simply claim moral wrongdoing by a set of actors. The goal, therefore, will be to examine whether tort-law or similar theories of obligation apply to past greenhouse gas emissions



July 2010

"Linking Policies When Tastes Differ: Global Climate Policy in a Heterogeneous World"

Discussion Paper

By Gilbert E. Metcalf and David Weisbach

If negotiations at COP 17 in Durban fail to produce an agreement on a Kyoto second-commitment period and on a broader climate regime, linking national climate policies would become more salient as a possible de facto international climate regime. Linking cap-and-trade systems is relatively straightforward, but linking disparate policies is harder. Metcalf and Weisbach address the linkage of heterogeneous climate policies.

Events Calendar

We host a busy schedule of events throughout the fall, winter and spring. Past guests include: UN Secretary-General Ban Ki-moon, former Vice President Al Gore, and former Soviet Union President Mikhail Gorbachev.