I haven't seen any solid evidence to determine the level of man's role in global climate change (don't call it "global warming", since
some areas of the earth get cooler as a result of the change).
But maintaining clean water and air, to stay on the safe side, seems like a good idea. I don't see the point of the debate about GCC, since with or without GCC, I enjoy clean water and air. What reason is there NOT to clean up our emissions? And if we need to clean it up anyway, what's the point of debating about global climate change?
I don't know about y'all, but clean air really helps my sinuses and overall health. That's why I live in a place where I can see the Pacific ocean, and breath it's clean fresh air, from my bedroom window.