A seemingly barren, harsh, and cold wilderness, the often icy tundra appears to support little life. However, peel back the corners of this fascinating biome and you will be amazed by the living organisms that thrive within one of Earth's toughest environments. Discover the living things that function within the tundra, from polar bears and caribou to seabirds and foxes. Explore tundras all over the world and find out what you can do to help protect the riches of these mysterious places. Teacher's guide available.