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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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Elliot and the Surfing Scientist: Temperature changes the properties of a substance

Substances that are very cold have different properties to substances that are hot. Watch as the Surfing Scientist uses hot and cold water, food colouring and a fish tank to demonstrate what happens when water at different temperatures is mixed together.

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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: River porpoise rescue

Can you imagine seeing porpoises leaping out of the water in a river near you? Sounds unlikely, doesn't it, but that's what people living along the banks of the Yangtze River in China often used to see. These Yangtze finless porpoises are now rapidly disappearing. Find out why and what Chinese scientist Professor Wang Ding ...

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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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Four Corners: Industrialisation versus conservation

The conflict between industry and conservation is not a new one. This clip, taken from a 1973 Four Corners program, highlights the conflict between those wishing to preserve Australia's natural environment and those representing industrial interests. Industry is shown to be spending millions of dollars to prevent pollution. ...

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Gardening Australia: Growing vegetables and natives

Discover what vegetables the students at Swan Valley Anglican School choose to grow first in their new school garden. In this clip, Josh Byrne is helping students to transform a bare patch of ground into a productive garden. Find out about the landscaping materials they use, and why particular plants, including natives, ...

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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.

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Stateline: Saving the northern hairy-nosed wombat

Just what is going on with the northern hairy-nosed wombat? Find out why scientists are working hard to understand more about this elusive Australian mammal. Watch this clip to find out about the ecology of this wombat species and to view some field and laboratory research aimed at saving it. You will also see some footage ...

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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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Landline: Feeding the hungry in Timor-Leste

It is often hard for a developing country to grow enough food to feed its population. In this clip you'll see the challenges encountered by the growing nation of Timor-Leste (East Timor). Listen to an AusAID organiser and the East Timorese president describe the importance of food, and the heartbreak of a hungry nation.

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Trees and connection

Yuin, Bunurong and Tasmanian man Bruce Pascoe explains his connection to Country and introduces us to a family of trees. In what ways does Bruce’s relationship with the Earth differ from yours?

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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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Gardening Australia: Creating a wetland

Find out how a school uses stormwater to create a wetland habitat for native plants. Josh Byrne visits Swan Valley Anglican School to observe the growth of their vegetable garden and to help out in the creation of the wetland. Discover what plants are best for a wetland habitat and how it will increase biodiversity and ...

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Kids in the Garden, Ep 11: Who are the creatures living in your garden?

See creepy crawly creatures as you've never seen them before. Discover how important wild creatures are to the health of gardens. Find out how you can entice a wide variety of creatures to a garden you know well!

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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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Gardening Australia: Planting an orchard

Imagine eating oranges straight from a tree in your school orchard. Watch this clip to see how the Swan Valley Anglican Community School began creating their own orchard complete with fruit-bearing orange trees. Josh Byrne explains how to position an orchard, prepare the soil and select suitable plants.

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Foreign Correspondent: Bali - tourism and development

Bali, a world-renowned slice of paradise in Indonesia, is undergoing rapid development to accommodate the increase in foreign tourism. Tourism brings money but it also drives up prices and affects the environment. View this clip to explore the issues experienced by those living in paradise.

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Catalyst: E-waste, recycling, and sustainability

What happens to electronic waste (e-waste)? Watch this clip about the physics of recycling to find out the way that useful materials are captured from waste at a local materials recovery facility. Presenter Tanya Ha investigates e-waste, the products it comes from, and the sustainability challenges it poses.