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    Analyze a scenario
    A scenario with fragmented action on climate change, where regional efforts are consistent with a conservative interpretation of the current Copenhagen pledges.

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    Analyze a scenario
    A scenario with weak Copenhagen pledges until 2020, and global collaborative action on climate change afterwards via a global carbon tax, aiming at stabilizing the concentration of GHGs at 450 parts per million (ppm) of CO2eq by 2100.