The glaciation was intensified 3 million years ago during the Pleistocene era to cover almost the entire continent, which is when places like Lake Vostok were glaciated. But after 40 million years, what makes climatologists think that they are going to melt away now? I mean...surely to God the tiny bit of human activity isn't going to bring us into another cretacious period (Which was believed to bethe warmest period in our planer's history, besides back billions of years when it was all molten rock. Basically, the warmest period where there was life...). The cretacious was only the way it was because there was no land at the poles... for an ice age to occure, you would need to have land at the poles...Antarctica for example was sitting just below Australia 65 million years ago when the dinosaurs were wiped out... before that, it was incredably warm world wide! They have found fossils of Crocodiles on Greenland from that era! The world simply can't end up like that again, until Antarctica moves away from the south pole... Another interesting fact is that the Cretacious period was the time when the least above-surface land existed... Florida was completely submerged...goodbye Miami, Tampa, Jacksonville, Daytona beach, and parts of the other southern states there...New Orleans, Savannah(sp?). The point is, because our current earth cannot and will not produce the extremes that existed during the cretacious period, global warming can only go so far... and once natural gas runs out, we will be stable until it completely leaves our atmosphere, at which point we will inevitably enter an ice age anyway because our source of global heating will be gone... It doesn't matter if we stop using natural gas now, or in forty years from now... the ice age is inevitable once it leaves the atmosphere...So we may as well procrastinate and keep using the gas until it runs out, and then wait the 30 to 40 years before it is no longer in our atmosphere... most of us will be dead in 70 years anyway... I know I'll be 87...

So what is the point of not delaying the inevitable? Do you want a bitter cold climate? Atleast if we wait, it'll start getting cold AFTER we are dead...