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Catalyst: What are modular farms?

Modular farms are flexible and self-contained systems that allow you to grow herbs and vegetables without the need for soil or sunlight. What are some advantages of modular farms? What may be some of the disadvantages?

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ABC Rosh Hashanah: Synagogue and teachings

Have you ever attended a religious ceremony? Nearly all religions have their own special ceremonies for weddings, funerals and other special events. This clip explores the ceremonies that Jewish people have at Rosh Hashanah, the Jewish New Year.

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Elliot and the Surfing Scientist: Red cabbage pH experiment

It might sound 'un-sciencey', and have a bad smell, but red cabbage is actually very useful for testing the pH of liquids. Added to well-known liquids like lemonade or vinegar, red cabbage juice changes to 'pretty colours'. In this clip, Surfing Scientist Ruben Meerman explains the colour changes and how red cabbage juice ...

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Catalyst: Growing avocados

Demand for certain kinds of food changes with time as people's tastes change. Avocados were not always popular, but in recent years their popularity has increased so much that supply cannot keep up with demand. Learn how stem cell scientists at the University of Queensland are leading the way in research that could cut ...

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BTN: Seeding clouds to make rain and snow

Imagine if we could control the weather. Find out how scientists are already at work making clouds rain when and where they want. It's called cloud seeding. Watch this clip to understand how cloud seeding works, and where it is being used in Australia.

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The Perth Mint Starts Making Currency: The gold rush era

The gold rush of the 1890s, which started in Coolgardie and Kalgoorlie, prompted a rush of hopeful prospectors to Western Australia. Perth Mint exhibition supervisor Greg Cooke talks about the reality of life in the harsh outback with little water and no roads. Would you have risked your life to try to find your fortune ...

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Count Us In, Ep 11: We can help you keep count!

Dodly is trying to keep count of the number of sheep in the backyard. Flynn helps Dodly to keep count by representing the numbers in different ways. They use models, drawings, strokes and numerals to keep count. Also discover the ways different cultures have recorded numbers.

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Four Corners: Surf story

Imagine riding a big wave on a surfboard back in the days when surfboard riding was the newest craze to hit Australia. At that time, many teenagers believed that surfing represented a whole new way of life. This Four Corners program from the early 1960s investigates the impact of the rise of the surfboard and surfing culture ...

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Can We Help?: Can seahorse dads really have babies?

Peter Rowsthorn visits Melbourne Aquarium to answer the question 'Do male seahorses give birth to their young?' Discover the answer as a marine expert describes Syngnathids, a unique family of fish. Learn what makes the seahorse and the sea dragon so unusual in the marine animal world.

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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?

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Working out the areas

Do you know how to work out the area of a square, a rectangle or a triangle? Learn the simple maths formulas needed from this video. What would be the area of a rectangle with a height of 5cm and a length of 3cm?

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Journey into Japan: Tokugawa shogunate is overthrown

How did Japan's Tokugawa shogunate come to an end? The entry of the US fleet into Tokyo Bay in 1853 and the events that followed exposed the shogunate's policy of isolation as a potential threat to the country. Western influence, and Japan's response to it, would have an enormous impact on the country's future. This clip ...

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BTN: Write or type, that is the question!

Do you have to learn cursive writing at school? In Finland, instead of cursive, they are learning how to type! Do you think this is a good idea? Why/why not?

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BTN: How many time zones are there in Australia?

Did you know that we have three time zones in Australia? This means that when it's 8am in Western Australia, it's 10am in Queensland and 9.30am in South Australia! Watch this clip to find out why we have different time zones and why South Australia is thinking about changing its time zone.

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Life in Medieval Europe: Working for a living in Medieval England

Imagine being transported to England in the middle of the 13th century. What was life like for common people? Who had the power to control the lives of others? In this clip, learn about the feudal system, which was widespread in Medieval Europe. This clip is first in a series of five.

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Why do mosquito bites itch?

What sounds do mosquitoes makes, and can you find out why those irritating little mosquito bites itch so much? Why do we need mosquitoes? Where do they fit in an ecosystem?

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You Can't Ask That: False assumptions about people who are blind or have low vision

In this clip, people who are blind or have low vision talk about situations in which they have appreciated offers of help, and situations in which the "help" offered was anything but helpful. They reveal how they have tackled life’s challenges, often in the face of low expectations.

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Can photons and atoms generate laser?

Electrons around atoms can absorb and emit photons of particular colours of light – see three different atomic models explain what's going on.

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Developing script ideas with Hannie Rayson

How do you come up with ideas to write about? Watch this clip to find out how Australian playwright and screenwriter Hannie Rayson begins her writing process. She begins with a "big question" - if you were writing a play, what big question would you ask?

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Communicating in the colonial era

Imagine if you were living in Sydney in the 1800s and awaiting news or packages from England. You see a ship approaching Sydney Harbour, but how do you know where this ship is coming from or what it is carrying? Find out in this video from Sydney Observatory!