Did you know that the Arctic tundra is the world's youngest biome? Located at latitudes 55° to 70° N, the tundra is a vast and treeless land, which covers about 20 percent of the Earth's surface. The tundra is the world's coldest and driest biome. This book helps students discover the unique features of the world's coldest and driest biome and also synthesize information to describe climates in different regions.