Brian Cox travels to the Ethiopian Highlands to study geladas, which share a common ancestor with humans and exhibit one of the more complex social structures of the primates.
Neil Oliver meets food historian Sally Grainger who demonstrates how the wealthy cooked and what they ate in Roman Britain.
Trace amounts of a rare metal have been found in rock layers dating back 65 million years. It is strong evidence for an asteroid impact killing off the dinosaurs.
David Attenborough introduced us to some amazing flowering plants and the complex relationship they have with pollinators.
Neil Oliver meets linguist Paul Russell and discuss how traces of Celtic language exist in modern languages, and what those ancient dialects might sound like.
Engineering academic Alison Raby uses models to demonstrate how Japan prepares for seismic events, and resident Chris Alderson describes his experience in the 2011 Tohoku earthquake and tsunami.
In The Final Quarter, we observe the final moments of the match in the indigenous round when Goodes points out a young Collingwood supporter to a security guard for racial abuse. Goodes describes the incident as 'shattering'. Discussion point: Why do you think he felt it important to point out her action, rather than just let it go?
Lawrence Williams conducts an experiment to test the subliminal priming effects of holding a cold or hot drink on a subject making a decision about a person.
Maximilien Robespierre faces the same fate as the former French royals, ending the revolutionary Reign of Terror.
Computer animations reveal how earthquakes cause megatsunamis, as University College London's Bill McGuire explains why the giant tidal waves are so destructive.
Xanthe Mallett joins Australian Customs officers as they go in search of ghost nets, the discarded fishing tackle that endanger marine life.
A Muslim woman describes an incident where she was racially abused in Sydney and Simon Reeve reflects on her sense of Australian identity.
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Neil Oliver visits Demark's Hjortspring boat (c 350 BC) and explains how the Vikings evolved from warring Scandinavian tribes.
Jimmy Doherty visits a chocolate factory to learn how cacao beans are transformed into chocolate and what the difference is between white and dark chocolate.
This series profiles Australia's leaders, featuring career highlights and giving insights into the different eras in which they lead the nation. This episode features William McMahon.
This clip describes the features of the Great Wall of China and details how and why it was built.