I saw some indexes about environmental quality in many websites, like in:
I wonder why the environmental quality index is higher in USA and in Europe than in other sub-Saharan or Latin American countries.
We know that approximately 1/3 of the world total pollution is coming from USA and Europe.
It seems to me a little bit strange. Are there any features about the circulation of CO2 on atmosphere that could explain this fact? Or are there just economic reasons that concern development levels of countries?