9 Elevator Innovations That Lifted Cities and Established Empires http://ifttt.com/images/no_image_card.png

There may be no single invention that shaped the modern city as much as the elevator. But the elevator, of course, is not a single invention. It's a series of innovations going back hundreds of years and continuing now and into the future. Here are nine -- some, but not all of the most important.



via Wired Top Stories http://feeds.wired.com/~r/wired/index/~3/AsoEsKxrv08/