What decision‐makers in countries want to know from science is more than just an understanding of what is a good and environmentally aware society, or the human dimensions of global change. They also want to know how to achieve comparable levels of human wellbeing keeping within global ecological limits. In the absence of agreed criteria on who has to do what, global cooperation as well as national action now needs new insights for potential policy choices and these could come from Special Reports of the Intergovernmental Panel on Climate Change (IPCC).
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