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Does it make sense to compare cities’ per capita emissions?

Posted by Olive Heffernan on behalf of Paty Romero Lankao It does make sense to compare the per capita CO2 emissions of Mexico City and Los Angeles (see figure below) to illuminate the debate on shared but differentiated responsibilities on greenhouse gases emissions and show that just as urban centers register different levels and paths of economic development, cities do not contribute at the same level to global warming. For instance, the real GDP per capita of Los Angeles (US$40,031) is almost 3 times that of Mexico City (US$13,470). The paradox here is that many of those urban centers with 


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