Building the Ultimate

How does a submarine withstand the huge forces of sea pressure?

In this episode, watch as the agile helicopter is pushed to its limit.

With new computer technology, we find out what happened at the infamous Tacoma Narrows collapse of 1940.

Experts explain what rocket science really is as this episode explores a shuttle's armor, shields and more.

The tank is a unique combination of firepower, protection and mobility that dominates the battlefield.

An insight into the turning points of skyscraper evolution and the structural engineers behind it all.

How are new threats changing the designs and technology behind bulletproof cars?