Landform Top Tens: The World's Most Amazing Deserts

Which desert was once a soggy swamp?
Why is part of the Mojave Desert known as "Death Valley"?
Which desert contains a very salty sea?
The world has many deserts, some are hot and sandy, others are rocky or scrub deserts, one is even snowy and icy. Find out about the fascinating weather systems that have helped to shape these landforms, the many different animals and plants that make their homes here, and how some people manage to survive in deserts.