Antarctica: The Coldest Desert on Earth

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When people imagine a desert... They picture endless sand. Blazing heat. And almost no water. But the largest desert on Earth is freezing cold. It's Antarctica. A desert isn't defined by temperature. It's defined by how little precipitation it receives. Some parts of Antarctica receive less snow each year than the Sahara receives rain. The air is simply too cold to hold much moisture. That's why fresh snowfall is surprisingly rare. Most of the ice covering the continent has been there for thousands of years. Despite looking frozen and wet... Antarctica is one of the driest places on Earth. Sometimes... The biggest surprises come from changing a definition. But if you think that's extreme... Wait until you see the wettest place on the planet.