If your talking about things like acid rain then yes there is a definite linkage proven by science. The idea that human emissions affects climate is science fiction . If you are arguing for the reduction of known pollutants than I'll sign on... it is good policy .
But the "hypothesis " that human emission of carbon dioxide can have any affect on the climate had better be proven beyond a doubt before you ask humans to fundamentally change their ways. I see more proof that climate change is greater affected by sun spot activity.
Let's also throw out for debate the proposition that the last time the earth experienced a significant global warming cycle ,the earth was lush with vegatation and animal life thrived. It took an extra-terrestrial killer asteroid to plunge the planet into the ice age that we are still retreating from .So what is the natural state of the planet ? Cold and ice caused because a killer asteroid plunged into it killing off multitudes of plant and animal life ? Or warm and full of life of all kinds .