Geomorphologist Grant Pearce takes Emma Johnston scuba diving in Piccaninnie Ponds and Kilsbys Sinkhole on South Australia's Limestone Coast.
When computer gaming was first introduced, it flopped. It was all too complicated. One man realised that keeping it simple was the key to hitting the big time.
Karl Stefanovic explains how the Great Barrier Reef is a product of the Ice Age coming to an end and raising water levels 10,000 years ago.
Neil Oliver examines torcs and coins and argues that they represent the growing power of kings and transferable symbols of the state.
This short clip explains the natural and man made causes of global warming. It includes an explanation of the Greenhouse Effect
Explores the conflict and struggle between Jacquie Lambie and her son after he became addicted to ice.
This clip describes the features of the Great Wall of China and details how and why it was built.
Naturally Australia describes some of the risks to the survival of the Great Barrier Reef, including river runoff and crown of thorns starfish, and the circumstances in which some damage is healthy.
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.
Joseph Banks suggests that Botany Bay become a penal colony. The British decide they can claim it as their own despite the existence of Aboriginal people.
Neil Oliver visits Demark's Hjortspring boat (c 350 BC) and explains how the Vikings evolved from warring Scandinavian tribes.
A Muslim woman describes an incident where she was racially abused in Sydney and Simon Reeve reflects on her sense of Australian identity.
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.
Maximilien Robespierre faces the same fate as the former French royals, ending the revolutionary Reign of Terror.
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.
To survive in the savannah, young painted wolves must become powerful pack members.
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