Tundras are very difficult places to live in. They are extremely cold and windy, with no trees and very little rain. The tundra covers about a fifth of the Earth's surface. There are two types of ...

Barren tundra lands, home to hardy flora and fauna, are one of the Earth's coldest, harshest biomes. Learn what threatens this fascinating ecosystem, and what you can do to help. 2:01 ...

Arctic foxes help create habitats as ‘gardeners’ of the tundra. Satellite images support the claim that Arctic foxes promote the growth of the lush vegetation seen around their dens.