Bristol, you are right on. Phillip has no clue what he is talking about. Phillip, why don't you actually go to school for a few years and maybe study meterology and then open your mouth again only to retract all your statements here.
If the conveyor belt actually stopped, which it possibly has in the past, there would cease to be seasons. But, we would find ourselves on an earth covered in ice thicker than we ahve ever seen. The entire earth would be covered because there would be so much reflection from the advancing ice caps that eventually all heat would be reflected away from earth.
Your graph makes no sense as well, in terms of your argument. All it asys is taht the average mean temperature across th earth is increasing. And to those who say that the earth goes through natural cycles: it may do that, but these cycles are much much longer, about 100,000 years and we have never seen an interglacial period of this length, or temperatures this high in history. THere has never been as little ice as there is today on earth. This is why scientists are worried. THe cycles of warming aren't 40 years, but, 100,000 years, so we have sped it up way too fast.