The climate on this planet is first of all controlled and regulated by it's position in the universe . So reasons to any change in climate should be first looked for outside the planet . Now there is nothing we can do against the ways of the universe , just adapt to it and hope for the best .
Humans are the strangers on Earth , the only organism that always exhaust's the natural resources and pollutes his own environment up till the point that it collapses . Just check history , city's in the old days where always importing people from the country side in any way they could , to compensate their high death rate from ,.. pollution .
The last view ages the new found technology did not stop humans from polluting the Earth , it made separation from their own pollution possible in many ways . Humans could finally , as a organism , grow exponential above any civilization before . That is , before their own pollution would catch up with them again .
We humans always destroy the environment we live in but have no influence on the global climate ,.. that is , the mass of the humans do not , where nowadays true technology some individuals have ways to change climate , like spraying chemicals in the air or even use electromagnetic wave tech . But still , in no way humans can make a permanent change to the Earth's climate ,... time will erase all mistakes humans made after they are gone . In the worse case that could be a 1000 years , witch is merely a blink of a eye on the universal time scale .

I see myself as a guest on this planet , where the planet is a very welcoming place to be ,... reasons to respect it and keep it as clean as i can . ;-)