i think it makes more sense to look at the amount of coal and oil being burned than how tiny cities are in comparison to the globe.
Well, it makes sense to match the CO2 emission rate and the CO2 recycle rate
The difference being the CO2 increase rate
However , I am not saying that % of the CO2 pollution due to human activities is negligible but for sure it is much lower than what people normaly assume , the main responsible being the nature itself
The yellowstone park fire, some years ago , produced more CO2 than the whole american industry in years
