Climate Change Superheroes

The last 50 years have witnessed a steep worldwide increase in the percentage of population living within cities, with a current global average of about 60%. This trend is predicted to continue, a fact that makes urban areas the single largest sources of carbon emissions contributing to resource depletion and climate change. If Washington D.C. were to be rebuilt from a sprawling car-centered to a high density public transit and pedestrian based city, its current annual per capita Greenhouse gas emissions of 19.7 tons of CO2 could be reduced to resemble those of Barcelona (3.4 tons) or Rio de Janeiro (2.3 tons).

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