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Catalyst: Sustainable fish farming

There are already more people around the world who eat farmed fish than people who eat beef. With the world's population and demand for food increasing, why is it so important for us to farm sustainably? One fishery near Kakadu in the Northern Territory practises sustainable farming. Find out what makes this farm so sustainable.

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BTN Podclass using podcasts in school video

Have you ever used a YouTube video or podcast on the internet to learn a new skill? Perhaps to learn how to play the guitar or to do new skateboard tricks or dance moves? Find out how one school in Italy uses podcasts to jazz up its lessons.

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MathXplosion, Ep 17: Develop mathematical mind-reading skills

Amaze your friends with your super mind-reading skills. Here’s a brain game you can play by asking a few questions and substituting letters for numbers! Learn to follow a specific sequence of arithmetical steps to always arrive at the same answer.

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Stateline: Saving the northern hairy-nosed wombat

Just what is going on with the northern hairy-nosed wombat? Find out why scientists are working hard to understand more about this elusive Australian mammal. Watch this clip to find out about the ecology of this wombat species and to view some field and laboratory research aimed at saving it. You will also see some footage ...

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MathXplosion, Ep 10: What is the strongest shape?

Are triangles really the strongest shapes ever? If so, why? Learn how and why right-angled and equilateral triangles have been used in engineering, architecture and design through the ages.

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ABC News: Mungo man goes home

The discovery of Mungo Man in 1974 rewrote history by revealing that Aboriginal people had been in Australia twice as long as previously thought. Named after the location at which it was found, the skeleton is around 42,000 years old. When discovered in 1974, Mungo Man was moved to a university in Canberra for scientific ...

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Walking on Aboriginal land

Benjamin Church works for the Royal Botanic Gardens Victoria. Watch as Ben welcomes visitors through the Welcome to Country ceremony. Why do people place leaves in the fire? What does that signify? As Ben takes his visitors through the Royal Botanic Gardens, he explains the importance of land to Aboriginal people.

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What a colourful exhibition!

As the orchestra plays a piece of music called "The Ballet of the Chickens in their Shells", lots of artworks are flashed up on the screen.These pictures were sent in for the concert from schools around Australia. If the music inspries you, perhaps you could make your own artwork.

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Dust Echoes, Ep 11: The Bat and the Butterfly

'Bat and Butterfly' is about Aboriginal moieties and what happens if you do not follow Aboriginal law. In central Arnhem Land there are two moieties, Yirritja and Dhuwa. Yirritja families must marry Dhuwa and vice versa. In this story the man, however talented he may be, behaves like a coward when he abducts a girl from ...

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War on Waste: Recycling e-waste to raise money for food charities

We all know recycling is a great way to reduce waste going into landfills, but there can be other benefits too. Some social entrepreneurs are recycling e-waste, not only to keep them from going into landfills, but also to generate revenue to help fund food charities. Craig Reucassel mentions how using technology for longer ...

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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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The convict voyages

What do you think it was like for convicts on their voyage from England to Australia? Would you be surprised to discover that their life expectancy on board a convict vessel was actually higher than that of free settlers? Watch this video to discover why this might be, and learn about the convicts themselves.

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Trees and connection

Yuin, Bunurong and Tasmanian man Bruce Pascoe explains his connection to Country and introduces us to a family of trees. In what ways does Bruce’s relationship with the Earth differ from yours?

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This Place: Birian Balunah - the birthing of the rivers

Paula Nihot shares a story told to her by Yugambeh Elder Patricia O’Connor. It's the story of Wanungara, queen of the mountains, and her daughters Princess Toolona and Princess Caningera, and how their complicated relationships and choices explain the geography of the region.

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Catalyst: Coal seam gas production

The latest coal rush is sweeping across Queensland, but this time without having to dig the coal up. Animations show the processes used to extract coal seam gas (CSG) out of the ground, which can then fuel gas turbines in power stations. Discover how CSG avoids some of the environmental effects of traditional coal mining, ...

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Catalyst: Toxic sediments

Learn how high levels of toxic sediments in Sydney Harbour have destroyed as much as 40 per cent of its invertebrates. Find out the main source of toxins. Learn how toxins become trapped in the sediment and distributed across the Harbour. Observe the devastating effects of toxic sediments on the food chain in 2010, when ...

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Experimentals: Examples of Bernoulli's theorem

Have you ever wondered how a yacht sails into the wind? Watch as the Experimentals team works through practical demonstrations of Bernoulli's theorem. You're in for a few surprises as you learn how gases and liquids change their behavior as they begin to flow.

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Can you clap the cymbal part from Carmen?

Get your clapping hands ready and join the Melbourne Symphony Orchestra as they play some music from the opera Carmen, by composer Bizet. Follow along with host Paul Rissmann and see if you can keep up with the orchestra! How does this piece of music make you feel? Why do you think it has that effect?

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BTN: Curbing the carp population

Find out why European carp fish are called 'river rabbits' in Australia. Listen to how they came to Australia and what makes them such a pest now.Discover how a local entrepreneur is exploiting the new resource while scientists are doing their best to cap the carp population explosion.

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ABC News: Dr Karl discusses mining asteroids

Imagine an asteroid, half the size of a football field, hurtling towards Earth at a speed of 28,000 kilometres per hour! Watch this clip to find out about Asteroid 2012 DA14 and whether it poses any threat to Earth. You will also discover why mining prospectors are keen to capture asteroids such as this one. Could the next ...