Quote:
Originally Posted by Snowden352
the causation of the reduction in CO2 is from smarter planning, not density of living.
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This could be questioned, loock at this study
http://www.feem-web.it/ess/files/karathodorou.doc.pdf by Niovi Karathodorou and Daniel J. Graham. It shows a clear relationship between urban densities and fuel consumption, especially for low densities like Portland's a small increase in its density would mean a massive decrease in fuel consumption.