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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 ...

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Experimentals: Do different things fall faster?

Want to find out what happens when you drop a watermelon and an apple from the top of a building? In this clip, Bernie Hobbs and Ruben Meerman, investigate whether the mass of an object influences how fast it falls. Bernie and Ruben ride the 'Giant Drop' at Dreamworld, drop a watermelon and apple from an eighth floor balcony, ...

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What is Music?: What is a musical phrase?

Sometimes we come across musical phrases that catch on like wildfire. With every repetition, these phrases take on more meaning. Listen closely for this jazz lick that has appeared in many forms throughout music history. What other popular musical phrases can you think of? What meanings do they carry, and what could you ...

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Landline: Developing bush tucker into a seed crop

Which native plant might provide a ready-made crop that could be used as a very nutritious food source? Meet two South Australian growers who are investigating just such a native crop. Find out more about the seed crop that does not require significant amounts of water or fertiliser and has a long history of use by Indigenous ...

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MathXplosion, Ep 11: Fun facts about the number seven

Did you know that the digits on opposite faces of dice will always add up to seven? Use dice as fun tools to reinforce fact families of seven, multiples of seven and subtraction skills.

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Catalyst: Prime numbers and unbreakable codes

Imagine if anyone was able to read all our secret, encrypted messages and information. Watch and find out how scientists at the Australian National University are developing a new encryption system using quantum physics and quantum computing.

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Voice of the People: The Aussie Accent: Whaddya reckon, mate?

Imagine a world where everybody sounded exactly the same when they spoke. What might that be like? Are there 'good' and 'bad' ways to speak? In this clip, listen to the opinions of many people about whether Australians have a bad accent.

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Elliot and the Surfing Scientist: Shrinking and expanding metals

Explore with the Surfing Scientist team what happens when metals are heated and cooled. Find out what happens to a metal ring when it is immersed in extremely cold liquid nitrogen. What do hinges on the Sydney Harbour Bridge have to do with all this? Find out.

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Elliot and the Surfing Scientist: Picking up ice cubes with string

Imagine trying to pick up a slippery ice cube with just a piece of string. Watch the Surfing Scientist team demonstrate how it can be done, using a surprising additive.

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Four Corners: Ecological effects of bushfires

Did you know that Australia is the most flammable continent on Earth? Watch this clip to discover how bushfires impact natural ecosystems, and how the increasing global threat of bushfires may affect Australia. Australian scientists explain the ecological consequences of fire and a US expert describes his concerns for the future.

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All about engines

What does 'horsepower' really mean? And how do engines work? Join Luke and Abhi from MIT to find out! As Abhi explains, engines produce power by forcing a mixture of fuel and air into a tight space and then burning it. Piston engines and turbine engines do this in similar, yet different ways. After watching this video, ...

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Show me the water!

Where does the water in your tap come from? Fresh water accounts for only 3% of the earth's water supply and only 1% of that is available to us in lakes and rivers or in the atmosphere. But how much do we use for drinking water and what else do we use fresh water for? Watch this video to find out how NASA's Global Precipitation ...

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The historical legacy of John Glover

English artist John Glover emigrated to Van Diemen's Land in 1831. He settled on a generous land grant called "Patterdale", near Deddington in northern Tasmania. Many of Glover’s artworks provide historical records of the people, plants and animals who lived in the area, as well as the changes wrought by European settlement.

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Counted: Being an Aboriginal student in the 1960s

Listen to Stan Grant Snr, Marcia Langton and Sol Bellear as they share their school experiences. How would you describe what they experienced? How do their memories make you feel? Why do you think these things happened to them? And what effect do you think their experiences would have had on them?

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Catalyst: Tsunami prevention in the Pacific

By investigating sediments and debris left by devastating tsunamis throughout history, Japanese scientists are making discoveries that change the way we understand disaster prevention in the Pacific. Watch as research teams examine rocks and mud layers; create digital simulations of past tsunamis; and investigate the seabed ...

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The House In Session, Ep 5: Writing amendments in the Senate

The Senate’s job is to "check the work" of the House of Representatives and make sure the laws they’ve made are fair. But what happens when the Senate and the House of Representatives disagree? Annabel Crabb explains the process of writing and approving amendments; the rituals of official business; and how the Lamson tube works.

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Sciencey: Five things you need to know about climate change

Find out how carbon dioxide makes the Earth warmer, how oceans store heat and the way we can see climate history in ice. What are the consequences of changes in the global climate? What can we do as individuals and communities to stop these negative changes?

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Harvesting and cooking murnong

Murnong is an edible Australian native plant that was prolific in south-eastern Australia. Which part of the murnong is eaten? Why was it so abundant in certain parts of Victoria? Watch Aunty Julie to learn how murnong is harvested and cooked.

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Catalyst: How high will sea levels rise?

Much of the world’s population will eventually have to deal with the consequences of sea-level rise, but the question is: how high will the water get? Dr Graham Phillips investigates how scientists are turning to the distant past to predict the impact of rising sea levels. Watch scientists explore 120,000-year-old coastlines, ...

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The physics of invisibility cloaks

Could an invisibility cloak actually work? Prashanth and Maria from MIT explore this idea and demonstrate the cool ways that light bounces, bends and mixes. How do the wings of the Morpho Butterfly give clues about how an invisibility cloak could work? How would light need to be channelled in order for something to seem invisible?