As highlighted by the so-called “Brokenhagen” (2009) and “Can’tcun” (2010) meetings, frustrations about the United Nations climate change negotiation process abound. Global climate change represents one of the biggest challenges facing the international community today. Through the United Nations Framework Convention on Climate Change (UNFCCC), parties are charged with cooperating to develop a global mandate, and with launching national strategies to address both emissions reductions and adaptation to climate change. However, after little success at the most recent UN treaty negotiations, there has been a growing discontent about the international treaty process as the means to solving the climate change problem. Three recent volumes address this dissatisfaction, contributing to our understanding of the challenges and shortcomings of treaty negotiations, yet also proposing three very different alternatives to solve the impasse. In Climate Governance at the Crossroads Matthew Hoffmann argues that, after two decades of multilateral negotiations and untold monies spent, we have very little to show. He has written this book out of a sense of frustration with the multilateral treaty process and the general lack of progress in moving forward, and the need to re-envision climate change governance from a micro-perspective. As an alternative to traditional top-down governance approaches such as the prevailing UN treaty system, Hoffmann examines what he calls “experimental” systems of governance. This book looks at 58 climate governance “experiments” such as carbon rationing action groups, social network platforms, cor-