I would point out that I've always believed the climate changes. It's been doing so for millions of years and will continue well after humanity's demise.

I'm still not sure (1) how much of that (as a % of total) is "our" fault and (2) how much of the climate we can "control"

My contribution to the green movement is primarily through conservation. Because I'm too much of a cheapskate to pay for wasted energy (like leaving the lights on, driving a gas guzzler, etc)