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Catalyst: Heat transfer: is it hot or cold?

If you picked up a paper book and a metal box do you think one would feel colder to the touch or would they feel the same? Watch this clip to see if people's predictions about the temperature of objects match their observations. You may be as surprised as they are!

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A mini chemistry set in a stick

Do you know how glowsticks work? Watch this clip and discover the chemical reaction that takes place when you snap a glowstick and release the reactants. Find out about chemiluminescence in nature, when scientists first created glowing sticks and the chemical equation that describes the reaction. Can you guess which glowstick ...

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How to become a NASA engineer

Do you know what you want to be when you grow up? Debora Fairbrother, a NASA engineer, didn't know what career path she was on. Watch this clip as she talks about the importance of education and of following your passion.

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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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Atoms of Fire: What makes salt and sugar so different?

Have you ever accidentally sprinkled sugar on your dinner or spooned salt into your coffee? Those white crystals might look the same but they taste very different because they are made of different kinds of atoms bonded in different ways. Discover how chemists identify what kinds of atoms a compound is made of, then find ...

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Elliot and the Surfing Scientist: The surface tension of water

Imagine you could walk on water! Some insects can do just that. Watch as the Surfing Scientist uses a paperclip and a glass of water to demonstrate how this is possible.

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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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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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Atoms Alive: Introduction to cells

Discover that all life is divided into two cell types. Learn about the difference between simpler prokaryotes, such as bacteria, and more complex eukaryotes, the group to which humans and multicellular organisms belong. See the amazing microscopic world teeming within a drop of pond water.

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BTN: Volcanoes and people

Imagine living in the shadow of a volcano? Well, millions of people do in Naples, Italy, where a massive volcano called Vesuvius exists. This clip explores the dangers posed by volcanoes and investigates some recent and ancient eruptions. Find out some misconceptions about volcanoes and discover how science is helping prevent ...

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The bang behind fireworks!

Ever wondered how fireworks are created? In this clip, pyrotechnics expert John Conkling describes the chemical and physical components of fireworks, and demonstrates many coloured explosions in a laboratory. Discover that a fireworks display is a chemical reaction between an oxidiser such as potassium nitrate and a fuel ...

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Catalyst: How will fire change the climate?

Considering the impact of a changing climate on the severity and frequency of fires is one thing, but how about the impact of fires on climate? Why does Professor David Bowman describe this scenario as a 'fire spiral'? What are the consequences of a world with fewer forests? As Professor Craig Allen explains, drought and ...

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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?

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Catalyst: Coorong salinity

Imagine the mighty Murray River as it flows through South Australia and reaches the sea. Explore the consequences of drought and human activity while listening to Graham Phillips describe the effects of the Coorong's increasing salinity and the the associated threat to Adelaide's supply of fresh water.

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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: Fire management strategies

What role do fire-behaviour specialists and ecologists have in fire management? Watch this clip to find out about issues relating to fire management in Australia, in particular prescribed burning.

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BTN: Tsunamis

Discover what powerful force triggers a tsunami. In this clip you will see the damage caused by tsunami, and find out why it occurred. Learn about what is happening on the ocean floor and the connection between tsunamis, earthquakes, volcanoes and tectonic plates. See how a warning centre is working to keep people safe ...

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Catalyst: Underground coal gasification

How are scientists using technology to get energy out of coal without having to dig it up? Find out how underground coal gasification (UCG) burns and converts the coal to gas underground. Visit UCG trial sites in Queensland and hear how UCG avoids some of the environmental effects of traditional coal mining, but may have ...

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Catalyst: The home of Australian science

Australia has a long and proud history of excellence in science. How should we celebrate this? Watch this clip to find out about an Australian organisation that recognises and promotes outstanding scientific achievement. You'll also find why its Canberra headquarters is referred to as 'the flying saucer'!

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BTN: Living on the International Space Station

What would it be like to live on a space station? In this clip you'll see footage of astronauts on the International Space Station and discover what their daily life is like. You'll also find out about how the space station was built and about some important research being done there.