It's the most extraordinary feat of engineering in history, and one of the most iconic man-made structures on the planet - the Great Wall of China, stretching thousands of miles across barren deserts and treacherous mountains before finally plunging into the sea. But why did the Chinese go to such staggering lengths to build it, and what are the secrets that have enabled it to survive for over 2,000 years? Now, ground breaking science is re-writing its complex history and de-coding its mysteries to reveal that there is much more to the Great Wall than just bricks and mortar. Cutting edge chemistry reveals that the secret to the Great Wall's remarkable strength is a simple ingredient found in every kitchen, and a new survey also determines that its length is truly amazing, as we finally solve the enigma at the heart of the world's greatest mega-structure.

What is the purpose of our existence ? What is the soul ? Which are the power of mind, of conscience...

What killed King Tutankhamun? Ever since his spectacular tomb was discovered, the boy king has been ...

For ten years, Raymond Depardon has followed the lives of farmer living in the mountain ranges. He a...

The Hugo's Brain is a French documentary-drama about autism. The documentary crosses authentic autis...

The documentary of the Nuremberg War Trials of 21 Nazi dignitaries held after World War II.

Three farming families in Hanyuan, China, strive to give their children a good life in the midst of ...

Quiet towns across rural Australia are in the grip of an Ice epidemic. Major international drug cart...

A montage of newscasts tracing the events of the "damned war" and the German invasion of 1940.

Why did the Roman Empire, which dominated Europe and the Mediterranean for five centuries, inexorabl...

A walk through the incredible personal and artistic history of legendary actor, race car driver and ...

The corruption runs deeper than you'd ever imagine. A multi-billion dollar industry you've never hea...

Cruelty, psychological and sexual violence, humiliations: reality television seems to have gone mad....

In this hour-long documentary, Oxford academic Janina Ramirez tours the country in search of Anglo-S...

Bailey interviews Italian film director Luchino Visconti.