[ninty]

Actually in the current version of "Popular Science" Magazine they go over what happens in the movie and tells us if what happens in the movie is possible or not. They say it's not global warming, but a sudden shutdown of the Global Ocean Conveyor, which moves heat north. Without that heat, things like what happen in the movie could occur. They say a total elapsed time of 10 years to complete the cycle. So this isn't gradual global warming.