[pskovinsky]

I see it more as an extremely complicated machine, like a huge clock or something, we have (in my opinion) bent a few of the little parts, nothing instantly serious, but calibration has been lost.
Now things are starting to change, and as they change they bend a couple more little parts, and the change starts happening faster.
Eventually, i think we'll have a nice toasty planet, with a hell of a lot of sand.
But eventually it will swing the other way, there won't be much life left producing greenhouse gasses, and there won't be much left but light colored heat-reflecting sand, and things will start to cool down, the ice caps will form again, reflecting more heat, and the tempurature will swing the other way.

All we have done is sped up the process by bending those little parts with our pollution and such.

I'm sure we'll eventually wipe life as we know it off the earth, and i'm pretty sure we (or something) will eventually wipe US off the face of the earth as well. If the human race is lucky we will have gotten off the planet by then, and will have self sustaining colonies somewhere else. Otherwise, R.I.P. Humanity.