So... the question remains... should we attempt to modify our behavior to alleviate the impacts of the globe potentially warming.

I say, not only "sure, why not" but "yes, absolutely!"

One: It couldn't hurt.
Two: The easiest things we could do are also things we should be doing to reduce our dependence on hydrocarbons. More solar, hydro, wind, geothermal... and yes, more nuclear power.

My problem with things such as hybrid and electric cars... is that the electricity also comes, primarily, from hydrocarbons... and usually much dirtier hydrocarbons at that. Sulfated coal for example. Get us off of coal fired power plants and I'd be all over a hybrid or electric car. In fact, I believe that cars that are purely electric happen be the worst polluters if you count the pollution created making the electricity. At least hybrids use gasoline to generate their electricity... Cleaner still would be methane powered hybrids.

One day, if we can get off of coal, hydrogen, which creates nothing but water when it burns, would be the cleanest.

That aside, you actually make a bigger difference if you reduce your electricity consumption in your home. That's one of the things that really annoys me about Al Gore. He is the worst kind of band-wagon wannabe. Al Gore has a $30,000 per year electric bill.