Last week, the Intergovernmental Panel on Climate Change (IPCC) issued its Working Group III report on mitigation, the product of more than six years of research and input from hundreds of scientists. Two key findings stand out. The first is that we have only 15 years left to start making the changes required to limit the catastrophic consequences of a global temperature increase above 2 degrees. Second, the issue of climate change is a global commons problem so unparalleled in history that it can only be addressed through unprecedented global cooperation.
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