By size and population, Asia is the biggest continent in the world. With 44.5 million km2, including its adjacent islands, it covers 8,7% of the terrestrial surface of the earth and almost 30% of the emerged lands. Six of every ten inhabitants of the earth live in Asia. Asia borders, to the west, Ural Mountains, and Caspian and Black sea. To the east, with the Pacific Ocean. To the north, with the Glacial Arctic ocean and to the south with the Indian Ocean. The biggest country of Asia, and in the world, is Russia, with 17 millions of Km2. The smallest country are the Maldives islands.