UK: City-living is Green-er?

http://www.guardian.co.uk/environment/2009/mar/23/city-dwellers-smaller-carbon-footprints

This is an article out of the UK that says that some studies have shown that people living in cities have a smaller carbon footprint than those living in the suburbs. They attribute this to the mass use of public transport and denser living areas.
I thought this would be a good article to include because not only is it about the UK, but it also connects with my blog topic about the environment.