Living in a city is a healthier lifestyle choice than living in SUBurban and rural areas. Some maps and analysis are available, the maps show CO2 emissions for a few American cities. The study was commissioned by Center for Neighborhood Technology.
“Our personal transportation choices can and do impact greenhouse gas emissions and global climate change. Households in the city have easier access to public transportation systems, drive less often or shorter distances, and walk or bike to their destinations. With continued investment in public transit and in walking- and biking-friendly neighborhoods, cities can further reduce greenhouse gas emissions and improve local air quality.”
Via Tom Paine.com