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Elliot and the Surfing Scientist: Properties and behaviour of gases

All substances are made up of tiny particles. A change in temperature can change the way these particles behave. Watch as the Surfing Scientist demonstrates how a gas behaves when it is heated. Find out whether the balloon gets sucked or pushed into the bottle!

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Medieval knights

Who were medieval knights? How did you become a knight and what did a knight have to do? A medieval knight didn't just ride about on a war horse in shiny armour, go on crusade or joust in a tournament. Medieval knights had important responsibilities and duties to carry out.

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Life in Medieval Europe: Trading for food

What are the essential things you need to survive? Food, water, medicine, shelter, sanitation ... anything else? How do you obtain these basic requirements? How might people living in Medieval Europe have survived if they had no money or land? In this clip, discover a useful practice that helped peasants negotiate a living. ...

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Foreign Correspondent: Cenotes

The Yucatán Peninsula is located in south-eastern Mexico and covers a vast area of coastline south of the Gulf of Mexico. It is a popular tourist destination for people who travel to cities such as Cancún to enjoy sandy white beaches. Explore the subterranean freshwater caverns of this region and discover why this pristine ...

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Catalyst: Planning future cities

Could your mobile phone help town planners design better cities? Data collected from our day-to-day interactions can now be collated and used to make our cities both more efficient and better places to live. See how it all works.

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World’s first bakers?

When did humans begin grinding seeds to make flour? Many people believe bread-making began in Egypt or Mesopotamia as long as 17,000 years ago. Archaeologists have recently found evidence that Indigenous Australians were producing flour 65,000 years ago. Were they the world’s first bakers?

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Ever seen robots play sumo?

Watch this clip to see sumo robots in action! UNSW student and Robogals member Jonathan Loong explains how the game works. How do the robots know when to turn around and move back into the ring?

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MathXplosion, Ep 33: On the grid

Explore graphs, grids and mapping with a focus on reading and writing location data using coordinate geometry. Grids and maps illustrate the concepts of parallel/perpendicular lines (axes or labelled number lines), ordered pairs and intersection points.

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Untold Stories, Ep 12: The submarine that ran amok at Gallipoli

Alec Nichols was a farm boy from the Sunshine Coast who joined the navy at the age of 18. During World War I, he was one of 35 men on the AE2 submarine that broke through enemy lines in the Dardanelles strait. After five days of sustained attacks from the Turkish navy, the submarine had to surface. The men were captured ...

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Life As a Female Convict: Cascades Female Factory

The Cascades Female Factory was both a prison and a factory for female convicts in early Hobart. It was a place where convict women were forced to undertake labour in slave-like conditions to support the fledgling colony. Learn what life at the Female Factory was like for the inmates. What sort of work did the women do? ...

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Catalyst: Waves supply nutrients to marine ecosystems

Dive through the marine kelp forests off Australia's western coast and discover how ocean waves help cycle nutrients to sustain the plants and kelp forests of marine ecosystems.

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Life in Medieval Europe: Rough justice

How do we determine whether someone is innocent or guilty of a crime? Our legal system is quite different to the one that was practised in Medieval Europe, where trials by combat or ordeal were not uncommon. In this clip, consider the merits of the medieval legal system. This clip is one in a series of five.

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David Malouf on violence in literature

Do you think we live in a violent world? Do you agree with David Malouf when he says that violence is everywhere? Should stories reflect what is happening in the world? How do you feel about violence as a theme in literature?

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Journey into Japan: Shoguns rule Japan with iron fists

Who were the shoguns and how did they rule Japan? In Japanese history, the time from about 1600 to 1868 is called the Edo period. In 1600, after centuries of wars, Japan came under the control of shoguns from the Tokugawa clan. They continued to rule until 1868, when they were overthrown. View this clip to discover how ...

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Catalyst: Supercapacitors: new battery technology

Discover how nanotechnology is contributing to the creation of new, improved batteries that may soon be used in all our mobile phones and portable music devices - even in cars and trams. Catalyst's Tanya Ha looks at how traditional batteries produce electricity and how their efficiency may be increased by tiny devices known ...

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Four Corners: Megafires

Are we approaching the 'age of megafires'? It might sound like something out of a sci-fi movie, but some scientists believe there is cause for concern. Watch this clip to find out how bushfires as we know them are changing. Discover why.

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Birds and totems

Yuin, Bunurong and Tasmanian man Bruce Pascoe shares his delight in encountering birds on Country. Bruce explains the significance of Umburra, or black duck, and his obligation to care for the species. Bruce explains that his brothers and sisters look after other animals, such as kangaroos, bream, wallabies, flathead and ...

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Experimentals: Make your own rocket fuel...!?!

You know what happens when the pressure in a bottle reaches extreme levels: KABOOM! Discover with Ruben and Bernie how mixing together some everyday household chemicals can fuel a fizzy fountain or a model rocket, with spectacular results. This is chemistry in motion.

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Catalyst: Nautical Robots

How might you find out how much and where the Earth's oceans are warming? Watch the report by Ruben Meerman and discover how more than 3000 'nautical robots', known as argo floats, have been placed in the oceans to collect data on variations in temperature, pressure and salinity.

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Catalyst: Would you eat insects?

A lot of resources go into the production of beef. For example, 20 litres of water is needed to produce just 1 gram of beef. In order to produce food more sustainably to feed an ever-growing population, some alternatives to protein have been suggested. What are some of these alternatives? Do you think they will ever replace meat?