honestly don't believe anything Man could do short of some serious nuclea war could affect global warming or cooling, the sun has way to much power over that and the hot and cold cycles follow the sun spot activity pretty closely.
Polution on the other hand... nobody is poluting the world except humans, and that is something we can seriously do something about.
We use too much, waste too much, over farm the land and dump the compostables into sealed pits and burry them to future generations to find.
Living a life of little waste and healthy living isn't "convenient" enough for the masses, and the masses are too great in numbers. I don't see it being corrected without some total end of the world sort of disaster taking place.