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Abstract: The paper examines the range of options for the post-2012 period for commitments to mitigate climate change. It (1) addresses the function and importance of mitigation commitments, (2) identifies the range of options with respect to three variables (what types of commitments, when, and by whom?), (3) proposes criteria for assessing these options, and (4) evaluates some of the leading proposals. The paper is one of six "think pieces" prepared for the Pew Center on Global Climate Change on core issues in developing an effective international response to global climate change.
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