A desert isn’t always about hot weather and sand. In fact, a desert is a dry region, where there is almost no water, rain, snow, trees, or plants. Thus, cold regions can also be considered deserts.

So the Antarctic desert is the largest desert in the world: its area is 5,400,000 sq mi.

The Sahara is the largest hot desert and the 3rd largest desert among all the deserts on Earth.