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Listed under:  Science  >  Earth and space  >  Atmosphere  >  Climate  >  Climate change
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Four Corners: Increasing threat of megafires

Many scientists believe we are already experiencing megafires and that they will continue to increase in the future. In this clip you will hear from Australian scientists at the forefront of fire research. Discover what they have to say about the causes, projections, and consequences of an increased megafire threat.

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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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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: Aboriginal fire knowledge reduces greenhouse gases

Come on an eye-opening trip to Western Arnhem Land in northern Australia to find out how Aboriginal fire-control techniques are used to reduce greenhouse gas emissions by thousands of tonnes.On the trip you will also find out how exploding ping-pong balls are used to create low greenhouse gas firebreaks at the right time ...

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Catalyst: Seals help climate research

Discover how seals are helping scientists study Antarctica, polar regions, oceans and climate change. Scientists use Weddell and southern elephant seals to gather data and monitor the way currents move heat around the world's oceans.

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Foreign Correspondent: Power is money on the the Mekong

Discover why the Lao Government plans to build a hydropower dam at Xayaboury (Xayaburi) on the Mekong River and how neighbouring countries might react. The Mekong River Commission is attempting to maintain a balance for all users of the river. Find out why this is a difficult and complex task.

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BTN: Food wastage

Do you know how much food industrialised nations, including Australia, throw away every year? Global population is set to reach over nine billion by 2050 which will increase demand for food by 70%. What do you think we can do to consume food more responsibly and sustainably? How might we re-direct food that would otherwise ...

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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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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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Zhou Daguan's account of Medieval Angkor

The city of Angkor was the centre of the mighty Khmer Empire for five hundred years, beginning around 900 CE. It was not only one of the most populous cities in the world, it featured some of the most sophisticated architecture and infrastructure, particularly in regards to water distribution. In this beautiful animation, ...

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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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Foreign Correspondent: Sustainable tourism

The Yucatán Peninsula in south-eastern Mexico is a popular tourist destination. This clip focuses on examples of sustainable tourism - tourism that aims to have a low environmental impact. View Tulum, a town under threat of being developed similarly to Cancún, a major tourist resort destination.

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Foreign Correspondent: New dam, new house: The Mekong

The mighty Mekong river provides a way of life for millions of people, and is arguably the most important resource in the developing country of Laos. Discover how villagers are being relocated to make way for hydropower dams on this river, which stretches for nearly 5,000 kilometres from the mountains of Tibet to Vietnam. ...

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Catalyst: Chemical pollutants toxic to whales

Explore how chemical pollutants affect the Antarctic food web. A scientist shows that baleen whales are consuming Antarctic krill contaminated by accumulated residues of persistent organic pollutants (POPs) from pesticides and industrial chemicals. Find out why these pollutants are concentrated at the Earth's polar regions.

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Foreign Correspondent: The Mekong: A damming example

The government of Laos has plans for many revenue-raising dams along the Mekong River. Find out about a dam, the Nam Theun 2, which was completed in 2010 and lies across the Nam Theun river in the Nakai Plateau. This clip from the same year asks if the dam could be the flagship for others to be built along the Mekong. Discover ...

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Four Corners: Megafires

Are we approaching the 'age of megafires'? It might sound like something out of a sci-fi movie, but some scientists believe there is cause for concern. Watch this clip to find out how bushfires as we know them are changing. Discover why.

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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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World’s first bakers?

When did humans begin grinding seeds to make flour? Many people believe bread-making began in Egypt or Mesopotamia as long as 17,000 years ago. Archaeologists have recently found evidence that Indigenous Australians were producing flour 65,000 years ago. Were they the world’s first bakers?