Dennis Quaid portrays a paleo-climatologist whose theory pertaining to the last Ice Age, 10,000 years ago, becomes applicable to what's happening in his present situation. The polar ice caps are melting and the ocean currents around the world are quickly dropping in temperature. This causes all kinds of weather problems, such as giant hailstones in Japan and tremendous twisters that destroy Los Angeles. It also causes three monstrous hurricane-like storms to develop over each continent, storms which are sucking down the extremely cold air from the upper atmosphere and bringing it to the ground. This instantly freezes everything in its path.Once the weather starts turning the Northern States are abandoned and the Southern half of the country makes way for the Mexican border. The only safe place in the world are all the 'Third World' countries. But Quaid has a son trapped in New York City and he vows to go and rescue him.So, equipped in his Anarctic gear, he and his two colleagues trek across country to a frozen Manhattan, looking for survivors.The special effect scenes of the twisters in California and the huge flood that overtakes New York City are simply amazing to watch. The effects greatly enhance the suspense of the film-because it makes the disaster all the more real, like watching an event on the Discovery or Weather Channel rather than a fictional movie.Although the premise presented in this feature has a very sped-up timeline it really does make you think about the future repercussions of mankind's pollution of the planet.Rolland Emerich's disaster epic delivers the goods-and, so far, is the best disaster movie of the 21st Century.