691321-d692e198-74ee-11e4-95cb-53e820554b16Forget colonies in space, one Japanese construction company says in the future human beings could live in huge complexes that corkscrew deep into the oceanBlue sky thinkers say around 5,000 people could live and work in a modern-day Atlantis, a sphere 500 meters in diameter that houses hotels, residential spaces and commercial complexes. The vast globe would float at the surface of the sea, but could be submerged in bad weather, down the center of a gigantic spiral structure that plunges to depths of up to 4,000 meters. More