1. Antarctic Desert
The largest desert in the world stretches 5.4 million square miles across the frozen wasteland of the southernmost continent. At once, this continent contains 90 percent of all ice on Earth. Because so little rain falls on Antarctica, it is classified as a desert. Yearly rainfall does not exceed 2 inches on average. Observation equipment at the Russian Vostok station recorded the lowest temperature ever, -128.5 degrees Fahrenheit, in 1983.
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