Many saw the terrorist attacks of September 11th as a stopping point in the evolution of the giant skyscraper. But surprisingly, around the world, the race to erect the world's tallest building continues at full speed. In this episode, Innovation follows the architects and engineers who have dedicated their lives to reaching new heights, travels around the world to see giant buildings under construction, and investigates the risks and benefits of building tall. Can innovative materials and design techniques overcome critical new safety issues? From blueprints for the site of the World Trade Center to Taipei 101 - which has just passed Malaysia's Petronas Towers as the world's tallest - to an audacious plan to construct a half-mile-high building in Dubai, the program goes behind the scenes for an intimate look at the passions, egos and energy required to get these massive projects off the ground.

Monday, 2/19 from 10-11 p.m. ET