Weather conditions in Chicago have mostly shut down the city. Charles Rex Arbogast/AP
Play of the Day: The Opinion-Theory Behind Global Cooling
The polar vortex hits the United States.
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The United States is besieged by a polar votex , starring Nicholas Cage. What does that mean? Mainly that temperatures are expected to drop below President Obama's approval ratings .
And now that a cold snap is upon us, conservative pundits who don't believe in climate change are waging a War on Carbon. They're not so fond of facts, but they do have opinions to back them up. Jon Stewart doesn't take kindly to these carbon crusaders.