Funny you say that Robby because every time I look around I see pavement, houses, buildings, roads, parking lots, and think of all the green foliage that should be there and wonder why people would argue that mankind has not impacted earth's cycles. The more we give ourselves the ability to emit CO2, the more space we're taking away from nature to sequester it. Lack of trees and plants scare me, here in Michigan, let alone the 100's or 1000's of acres per day that are being razed in South America. Not to mention the pavement and buildings that are insulating surface temperature and hurrying water into the rivers, lakes, and streams which receive both larger sediment loads and warmer, less filtered, more polluted water. But... just my two cents, I could be wrong.
One thing, if one were to truly study and buy into what is going on with the extra CO2 in the air, one would quit citing precipitation (whether it's a hurricane or a snowstorm) as a point against man-made climate change.
No doubt natural disasters have changed the climate in the past and will continue to do so, but I don't buy that as an argument against trying to be proactive in fighting pollution of the environment.
That being said, I'm not worried about what my poor gas mileage vehicle, or any of yours are doing to the environent (unless you guys are wheeling over some previously thought extinct fauna or something) :-) There's bigger fish to fry.