Carbon-Fiber Cables Could Lift Elevators In Kilometer-High Skyscrapers

New elevator technology pushes skyscrapers to new heights. What's one of the most important limits to the heights of skyscrapers? How far up an elevator can go. The way elevators are currently made, they can only be about a half-kilometer tall, according to the Economist. Now, however, a company has announced that it's developed an elevator cable, called UltraRope, that makes it possible to build a one-kilometer-tall elevator. The company, Kone of Finland, says it has tested UltraRope in real el...