The fascinating story of why The Crusades began and the eventual fall of Constantinople, becoming Istanbul.
A brief animated history of the Incas, where they lived and the civilisations that went before them including the Nazcas.
The origins, mythologies and beliefs of the Incas
The Incas established a huge and well connected empire that was supported by 'roadworks' call the Inca Trail
It wasn't until 1908 that a chronicle of ancient Incan culture was discovered mysteriously in Copenhagen.
The Kepler telescope could lead to perhaps the greatest scientific discovery in history - another hospitable planet within reach of humans.
On the night of December 16, 1773, Samuel Adams and the Sons of Liberty boarded three ships in the Boston harbour and threw 342 chests of tea overboard. It set the stage for the American revolutionary war.
After a successful revolutionary war, a newly independent America embarked on whole new political system for its people.
A global financial crisis, coupled with a devastating potato famine forced many Irish people to emigrate to England in the 1870s, where they were treated appallingly.
Office workers are asked to place themselves in order of seniority. Meanwhile, their heart rates are secretly tracked to see who is stressed out by their placement in the hierarchy.
It's not all about looks. This experiment shows that someone can quickly hijack their chances of becoming a leader by being disengaged and showing selfishness.
An experiment shows that opposites really do attract when it comes to smell. The reason could be our immune systems.
An experiment explores whether women prefer lower voiced males - and if males prefer higher pitched females.
An experiment explores personality compatibility and its role in who we partner with.
Sam Best and his family needed to come up with daring new approaches to help Sam progress socially as he grew older.
A series of physical challenges in Africa, including boxing and white water rafting, expand Sam's world and make him better at social interactions.
Returning to Australia, Sam does something he could never have done before - he delivers a perfect speech in front of his class on his African journey.
Contains images of drugs. A look inside the dirty and grimy labs where ice is often made.
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