Since they can't fix the real problem are trying to go "green" in counterproductive ways that make things worse: blowing up nuclear plants or taxing cow fart.
You can cut all the city hopping you want and it won't make the slightest difference.
China's figure aren't that great on their own, with exportation deducted.
EDIT: 12% is all of Europe. This thread is about the EU.
Europe as a whole emits 12%.
If the EU mandated that products imported are made in a carbon neutral fashion, then importers of products will pay attention. Unfortunately it means higher prices, and the governments will get voted out of office by people voting for the populists selling the electoral promise of "Make Prices Low Again!"...
You're commenting on a comments thread about the possible desertification of Europe, a conversation we're having in the context of the record hot summer.
The extremist parties offer scapegoats and solutions for the unthinking ("The brown people! Remigration! The elite, except we're getting funded by the elite and we'll protect them and fuck you!"), and sadly there's too many stupid people who can't be spoonfed any concept of "think deeper" that like buying those...
In bigger cities, it might be closer to 20-30% of their economy.
Take that away, and it would have a cascading effect through entire countries.
Unless you count the historical city center of Venice as a big city I doubt you'd get many big cities getting even close to those numbers
I can't easily/quickly find some numbers but if we want to accept, with a grain of salt, Gemini research on this even in Venice (I think it counts Mestre as well) it's ~15% and that's the highest it found.
https://assets-global.website-files.com/6329bc97af73223b5759...