Efforts to provide global public goods clash with the challenges of coordinating contributions and distributing costs equitably. In this experimental setting, the researchers distribute endowments unequally among a group of people who can reach a target sum through successive contributions....

This paper investigates the welfare costs of unilateral versus internationally coordinated emission permit policies in a two-country overlapping generations model with producer carbon emissions. We show that, for a net foreign debtor country, the domestic welfare costs of a unilateral domestic...

The G-20 was created to deal with the global financial and economic crisis of 2008. G-20 leaders were successful – the crisis was contained. Should the G-20 leaders move on to deal with the most difficult and hitherto intractable global environmental policy issues? The United Nations has not...