The failure of the 2009 United Nations Climate Change Conference in Copenhagen to deliver a binding international treaty to reduce greenhouse gas emissions raised questions about the ability of the existing global governance regime to deliver an effective response to climate change. In the wake of Copenhagen, diverse alternative approaches to global climate governance were proposed and discussed. In this special issue of Portal, we have gathered together six diverse articles that each look at the climate governance problem through a very different lens. While all the authors agree that the climate governance system is failing humanity and is in need of repair, they do not agree on how best to respond. Their proposed responses range from minor reforms to radical overturning of the existing regime. While by no means an exhaustive coverage of the proposed alternatives to global climate change policy post-Copenhagen, the articles in this special issue offer a sample of policy and governance experiments that deserve to be tested in practice.