This has always been one of the big issues. I remember in college in the 1990's being told that you can't just enact pollution limits globally because developi

This has always been one of the big issues. I remember in college in the 1990's being told that you can't just enact pollution limits globally because developing countries would call foul over the injustice. The UK and the US and others got rich by (doing what we'd describe today as) polluting horribly, on their way to develop cleaner technologies. If you put pollution caps on all countries, it's going to hit developing countries right when they're trying to do the same.