In The Final Quarter we see Goodes kick a goal during the 2015 indigenous round. He celebrates with a ceremonial war dance directed towards the Carlton fans. Discussion point: He is accused by some of inciting anger. Do you think those criticisms are fair or was he simply celebrating his Aboriginal culture?
Scientists explain how Neptune captured its largest moon, Triton, and discuss the satellite's geyser plumes.
Sam Willis visits a museum in Xi'an, where he sees how paper was made and discusses how the technology found its way to the Middle East.
Albert Wiggal shows Brendan Moar the kind of rafts the Bardi people would have used to travel and fish around One Arm Point in the Kimberley region.
Constantinople was once called the 'new Rome'.
Two Lockerbie plane bombing witnesses discuss their reactions of bewilderment, shock and sadness when faced with the bodies of the victims.
Learn why some are dark and others are white, how they create rainbows, halos and sun dogs, and how clouds are formed.
Cook set off to the great unknown southern land on the ship the 'Endeavour' with 94 people and a goat! As Captain, he took responsibility to care for all of those in his charge. How did Cook prevent scurvy among his crew?
Female green turtles dig into the sand on Raine Island to lay around 100 pingpong ballsized eggs each, leaving them to incubate in the warm sand, before returning to the water.
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.
How do bees know where to find the best flowers to make honey How do they talk to each other David Attenborough shows that it's all down to the amazing 'waggle dance'.
Jim AlKhalili discusses the law of refraction originally developed by Ibn Sahl, but often attributed to Willebrord Snellius.
Astrophysicist Mario Livio demonstrates how the probability of a needle falling on a line, or between two lines, has an uncanny relationship to pi.
Michael Moore leads two injured victims of the Columbine shooting and a media pack to KMart's headquarters to deliver bags of 9mm bullets purchased at the store. A spokesperson announces the withdrawal of such ammunition from sale.
An overview of Shaolin monks and the development of Shaolin kungfu.
In a demonstration of filmmaking techniques, actors suit up so their performances can be digitised by CGI motion capture cameras.
What goes into the making of the things all around us, the clothes we wear, the bread we eat, the paper we write on? 'Magic of Making' takes us behind the closed doors of industry.
The terms proposition and opposition are defined in this clip from the documentary Up For Debate, with an introduction to the components of a debate speech.