Detailed text transcripts for TV channel - KGO - 20110126:09:38:00
>> it's a little bit like opening the refrigerator and the cold air comes out and moves into the rest of the room. >> reporter: it may have to do with the melting of the arctic ice sheets. the magenta line shows here where the ice was in the '70s. the white area, where the ice is now. it's the jet stream that acts as a border between the arctic air and the rest of the world. normally keeping the frigid air trapped near the north pole. some studies now suggest that melting arctic sea ice is making cold zones warmer, weakening the jet stream's grip, allowing colder air to spill down south. >> a ...
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