North and South Korea were separated at the end of World War II. They've walked quite different paths since then.
Under successive pro-American governments, the South has become an economic powerhouse, one of the G-20 major economies. South Korean companies like SamsungHyundai, and LG are renowned around the world.
The North, led by a family dynasty based on "Juche" philosophy of self-sufficiency, has turned into a bitterly poor and unpredictable nation.
The Guardian's Data Blog has published some figures that show just how divergent the two nations are, economically and socially. Here are some of the crazier ones: