It's the ultimate engineering project: how do you build a planet? And what happens if you get anything wrong? With stunning CGI, Richard Hammond is about to find out.

Using state-of-the-art technologies, Richard Hammond goes beyond the limits of the naked eye and explores the hidden secrets of the invisible world around us ...

With his trademark wit, Richard Hammond takes on the ultimate engineering project: to build a planet piece by piece, from the top of a two-mile high tower in the Californian desert. ABC iview Home ...