Uncovering what is left of Hitler's ambitious structures which were built in a bid for world domination, beginning with a look at the Atlantic Wall. Created in order to protect Europe from an Allied invasion it stretches thousands of kilometres from France to Norway, and on D-Day the fortifications were put to the ultimate test.
2013 • Technology
Fifty meters beneath the teeming mega-city of Tokyo is an underworld river system - 6.4km of tunnels, colossal water tanks, massive pillars, giant pumps that remove 200 tons of floodwater every second. It’s an engineering marvel built to protect Tokyo against the increasing threat of flooding.
Explore the hidden history and super science of hot air balloons, synthetic rubber and metal detectors.
Facebook is thought to know more about us than any other business in history, but what does the social network that Mark Zuckerberg built do with all of our personal information? Reporter Darragh MacIntyre investigates how Facebook's powerful algorithms allow advertisers and politicians to target us more directly than ever before, and he questions whether the company's size and complexity now makes it impossible to regulate.
It began as an audacious idea: to establish a permanent human presence in the most hostile environment known to man -- space. It's a dream that would bring together two former Cold War enemies and lead to the most expensive structure ever built. Discover the inside story of the International Space Station. See how NASA engineers triumphed over decades of seemingly insurmountable obstacles to develop Skylab, Space Station Freedom, and finally the International Space Station.