Was there a serious attempt to begin with? Yes, there are some efficiency gains and in some developed nations CO2 emissions seemed to stagnate, but much of that

Was there a serious attempt to begin with? Yes, there are some efficiency gains and in some developed nations CO2 emissions seemed to stagnate, but much of that seems incidental (for instance partly caused by the Great Recession 10 years ago) and rarely part of a coordinated effort. Though I guess you can at least partly credit the rise of renewable energy like Solar to some government programs. Wonder how much faster the effort would have been if we had an actual cap-and-trade system that encompasses the global economy instead of the lackluster attempts which aren't legally binding, only cover limited industries or have an oversupply of emission certificates to render the system useless (like the European one). But it's pointless to ponder about that. It's not there's a lack of ideas regarding possible solutions, it's a just lack of foresight by humanity. We probably can't even blame previous generations, because we would have acted the same in their situation.