Question Earthority!

“In the winter sky over Antarctica, scientists have detected a vast cap of steadily warming air, in the first sign that record levels of greenhouse gases in the atmosphere may be trapping heat above the ice sheets of the South Pole. The temperature of the winter air over Antarctica has been rising at a rate three times faster than the world as a whole, the researchers reported Thursday in the journal Science. By analyzing 30 years of high-altitude weather balloon records, meteorologists at the British Antarctic Survey in Cambridge concluded that temperatures in the polar troposphere, the dense layer of air reaching from the surface to an altitude of about 5 miles, have risen by 3.6 degrees Fahrenheit since the early 1970s.” (03/31/06)