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Listed under:  Science  >  Environmental management  >  Pollution
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Carbon dioxide and greenhouse gases

Have you heard of greenhouse gases? What do you think they are? (The word 'greenhouse' is a big clue!) The delicate balance of greenhouse gases has been affected by the addition of an unprecedented amount of carbon dioxide (CO2) to our atmosphere in the last 150 years. Watch this video to find out how CO2 is being added ...

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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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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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Magical Land of Oz: Join the Numbat Taskforce!

Numbats are native Australian marsupials that can be found in Western Australia and South Australia. Unfortunately, their numbers are declining rapidly. What are the causes? What can we do to combat this and protect these unique Australian animals? Find out what one community group, the Numbat Taskforce, is doing to help ...

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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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Understanding the causes of climate change

Did you know that climate change is not a recent phenomenon? In the past, natural events led to changes in the climate. Although natural events still affect climate, they're not enough to explain the big changes we've been seeing in the last 150 years. What changes on earth can account for such dramatic changes to our climate? ...

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Magical Land of Oz: Koalas and climate change

The koala population in rural NSW has been declining over the years due to drought and heatwaves. What causes some of the temperature extremes experienced in this region? Dr Mella believes koalas normally get most of the moisture they need to stay hydrated from eucalyptus leaves. What has changed in recent years that means ...

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The Business: Bike use in Europe is streets ahead

In the German city of Leipzig, it seems as if almost everyone rides a bike. Like many European cities, Leipzig is 'bike friendly' and its residents have taken full advantage. In this clip, the reporter shows us why Europe is streets ahead when it comes to encouraging bike use and investigates what it might take for Australian ...

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GTK: Germaine Greer on rock culture, 1971

Does music have the power to change the world? From the 1950s rock 'n' roll to later popular music of the 60s and 70s, music encouraged teenagers to rebel against the ideas and beliefs of earlier generations and, in some instances, to change society for the better. In this clip, explore some of these changes from the perspective ...

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The Snowy Mountains Scheme

How did the Snowy Mountains Hydro-Electric Scheme come to be Australia's greatest economic achievement in the decades following World War II? In this clip, discover what Australia hoped to accomplish through the scheme, and some of the sacrifices that were made for it. Also learn what life was like for migrants from war-devastated ...

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Catalyst: Why plants are good for liveable cities

Central Park in Sydney was voted the world's best tall building. It is known for the plants in its beautiful vertical gardens which cover its surfaces, but did you know that the garden is not purely decorative? Watch this video to find out what other purpose the vertical garden has.

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Catalyst: What is a mega-region?

Population growth is one of the problems facing Australians cities. Dr Julian Bolleter from the Urban Design Research Centre at the University of Western Australia says creating mega-regions could be a potential solution. What is a mega-region? In order to create a mega-region, what must happen first?

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ABC RN: Melbourne from a tram

Get ready to board a Melbourne tram for a journey around the City Circle route! Along the way, the passengers on the tram will highlight some aspects of Melbourne's urban design, both past and present, giving you a real sense of place. Is this the most 'liveable' city in Australia, as many claim, or a city in need of change?

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Landline: Feeding soils to grow hungry crops

How do today's farmers improve their crop yields? One school of thought is to go high-tech and use agricultural technologies designed to improve efficiencies and yields. See the role that soil condition plays in gaining those high yields.

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Welcome to Bonegilla Migrant Camp

Following World War II, the Australian government was eager to increase the country’s population. The war reminded Australians that their small population would not withstand an enemy invasion. Further, a larger workforce was needed to develop the postwar economy. European people, many displaced by the war and the spread ...

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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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ABC National TV Service: Opening night, 1956

Can you imagine life before television? How different would it have been? This clip is taken from the opening moments of the first ABC television broadcast in 1956. As you watch it, see how the presenter describes the event and try to imagine the impact such first broadcasts would have had on Australians more than half ...

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Four Corners: Radio pirates, 1973

Imagine life before mobile phones. In this 1973 clip from a Four Corners program, discover the lengths that many determined Australians were prepared to go to in order to communicate through the air waves from their cars and other locations. This was long before the invention of mobiles, video conferencing, social media ...

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ABC News: Sydney slips in world cities rankings, 2012

A 'Cities of Opportunity' study in 2012 found that, while Sydney was regarded as a 'livable' city, its residents faced some significant urban issues. With other cities moving ahead of Sydney in the rankings, questions have been asked about why the cost of living in Sydney is so high and what should be done to solve some ...

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Stateline: Proposed coal mine raises environmental issues

Explore the possible benefits and impacts to the environment and community of a proposed new coal mine, called the Wallarah 2 Coal Project. In this clip from late June 2013, find out some viewpoints that landowners, community members, mine representatives and politicians present about the proposed underground mine.