The march to the sky in the building of mind-dizzying skyscrapers is a competition between economic powers that isn't going to let up anytime soon.
Photo Courtesy: Nicolas Lannuzel The Burj Khalifa in Dubai. Has been the tallest building in the world since 2010 and is classified as 'Megatall'.
The Burj Khalifa in Dubai stands 829 m (2,720 ft.) above the desert. The tower is so tall that it is able to draw cool, high-altitude air from its top to feed and ease the load on its massive air...
