There are a lot of articles talking about this. Here's one I grabbed: https://www.citylab.com/life/2012/04/why-bigger-cities-are-greener/863/ https://www.cityl

There are a lot of articles talking about this. Here's one I grabbed: https://www.citylab.com/life/2012/04/why-bigger-cities-are-greener/863/ https://www.citylab.com/life/2012/04/why-bigger-cities-are-g... I think in the statistic you cite, 'city' includes both the urban part and the sprawling suburbs. You'd also want to compare apples to apples: someone living a very green life in a "western" city is still likely to live a more carbon-intensive life than someone doing subsistence farming.