Did you know that Antarctica is the largest desert in the world? It receives so little rain or snow that it is almost as dry as the Sahara! Whether cold, hot or somewhere in between, a third of the Earth's land is desert. Learn about the geography and resources of desert habitats as well as how animals and people have adapted to and changed desert environments. Explore this habitat's future and what people can do to help keep it safe. Part of the Exploring Earth's Habitats series.