The Earth experiences a major climate shift, caused by global warming, which pushes the planet into a new ice age. It is a race for survival as the whole northern hemisphere begins an evacuation to the south where it is warmer.
Other mistake: At the end of the film when they arrive in NYC looking for the library, we know that they survived because they are inside with a roaring fire burning. But where is the smoke up above, as Jack Hall approaches? There must be a chimney, or else they would have all died of asphyxiation.kiazersoza
Vice President Becker: I don't accept that abandoning half of the country is necessary!
Tom Gomez: Maybe if you'd listened to him sooner, it wouldn't be.
Vice President Becker: Bullshit! It's easy for him to suggest this plan. He's safely here in Washington.
Tom Gomez: His son is in Manhattan. I just thought you should know that before you start questioning his motives.