World's Tallest Skyscrapers: Beyond the Clouds - Episode Guide

Rob starts with a visit to the Burj Khalifa, the current world record holder in Dubai. What challenges must be overcome to anchor such giants to the ground? What effect do the elements have on design and construction? What is behind the race to build faster, higher and greater?

Rob Bell explores the global phenomenon that is the skyscraper. What does it take to keep these vertical cities functioning around the clock? How will new technology - including the brave new world of wooden 'plyscrapers' - affect the towers of the future?