Fascinating Facts About Deserts

Here are some fun facts about deserts: Deserts aren’t always hot — Antarctica is the largest desert

in the world. Deserts are defined by low rainfall, not temperature. Some deserts can

go years without rain, then flood in minutes. Sand dunes move over time,

shaped by wind. Only about 20% of deserts are covered in sand — most are rock or gravel.

Desert plants can store water for months or years. Many desert animals are nocturnal to

avoid extreme heat. The Sahara Desert was once green with rivers and grasslands. Temperatures in

deserts can change over 40°F (22°C) between day and night.