What is the largest desert in the world?

From vast expanses of scorching sand to huge ice caps, deserts can take many different forms. But which hot and cold deserts are the largest on the planet? And what kinds of life can survive in these extremely dry places?

To answer this record question, it is important to consider what exactly makes a desert a desert. According to Jonathan Wille (opens in a new tab)an Antarctic meteorologist and climatologist at the University of Grenoble in France, any area that receives less than 9.8 inches (25 centimeters) of precipitation per year is considered a desert.

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