Asia is the world's largest continent, covering about 30% of the world's land area. It includes Eastern Asia, dominated by China; Southern Asia, which includes India and Pakistan; Southeast Asia, consisting of peninsulas and thousands of islands; and Southwest Asia, also known as the Middle East. Asia contains many different climate zones from deserts to rainforests and is home to over 4 billion people of diverse cultures and religions. While many Asians were traditionally farmers, in the last 50 years some countries have industrialized rapidly and seen rising living standards.