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• TLF-IDM015709

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.

• TLF-IDM017456

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.

• TLF-IDM015942

Consider the vast land that is Australia. How might we, as a community, help to keep our land sustainable? Explore the ideas put forward by Professor Peter Cullen and Dr John Williams in response to the continuing drought conditions of 2003. What role could city dwellers play so that farmers could better care for the land?

• TLF-IDM015386

Journey to Bathurst Island where strong tidal currents can be found in the Apsley Strait. Observe how the Nguiu community is investigating the use of tidal power to provide their electricity needs instead of using non-renewable and expensive fossil fuels.

• TLF-IDM017748

Are we headed for food shortages in the future? Many scientists say that food production is becoming a critical issue and that Australia has a part to play in securing food for the world's future. As you watch this clip from 2013, find out how past strategies dealt with the food security issue, and learn about our plans ...

• TLF-IDM018495

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. ...

• TLF-IDM015388

Imagine a world where the only place Siberian tigers lived was in captivity. Watch this clip to learn more about the natural habitat of Siberian tigers and the things that threaten their survival in the wild. Chinese scientists are breeding this endangered species in captivity and zoologist, Liu Dan, explains his hope that ...

• TLF-IDM015373

Learn how high levels of toxic sediments in Sydney Harbour have destroyed as much as 40 per cent of its invertebrates. Find out the main source of toxins. Learn how toxins become trapped in the sediment and distributed across the Harbour. Observe the devastating effects of toxic sediments on the food chain in 2010, when ...

• TLF-IDM015392

Discover the tiny bats that live in Australian backyards in urban areas, including large cities. Watch this clip to learn more about these elusive Australian mammals, and to find out about a large-scale survey undertaken in Melbourne. Scientist, Dr Rodney van der Ree, addresses a group of volunteers in the field and explains ...

• TLF-IDM016006

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. ...