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Listed under:  Science  >  Life  >  Ecosystems
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Why do mosquito bites itch?

What sounds do mosquitoes makes, and can you find out why those irritating little mosquito bites itch so much? Why do we need mosquitoes? Where do they fit in an ecosystem?

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Gardening Australia: Understanding bush foods

Did you know that you can mix the nectar from some native flowers with water to make a sweet drink? Explore the Royal Botanic Gardens of Sydney with Gardening Australia presenter Clarence Stockee, and discover plants used by Aboriginal people. Find out about some native Australian bush foods, such as Kurrajong seeds, and ...

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Catalyst: Thinning ice sheet

Discover that that the massive ice sheet in East Antarctica has been losing mass since 2006 instead of growing, as was previously thought. Watch animations to see how scientists from NASA and Australia are using satellite technology and aerial monitoring to investigate the thickness of East Antarctica's ice sheet. Find ...

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Catalyst: Climate and bushfires in Australia

What can science tell us about the major cause of bushfires in Australia's past? How can it help us predict future bushfires? Two scientists discuss evidence related to bushfire regimes (bushfire patterns, types and intensity). Please note that this clip contains recent images of homes destroyed by fire that may disturb ...

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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: Penguin wave better than a group hug!

Emperor penguins form a big, tightly packed huddle to keep warm in Antarctica, the coldest and windiest continent on Earth. But how do the ones on the outside of the huddle keep warm? Find out about a clever way of ensuring that no penguin is left out in the cold.

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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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Scientists study suburban microbats

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 ...

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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.

Interactive

Field Guide to NSW Fauna - Google Play app

View descriptions of NSW fauna together with maps of distribution, images and endangered species rating. Animals are grouped by mammals, reptiles, fishes, amphibians, birds or insects and other invertebrates. Info pages include images and animal sounds. Free when reviewed on 12/5/2015.

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Field Guide to Tasmanian Fauna - iTunes app

View descriptions of Tasmanian fauna together with maps of distribution, images and endangered species rating. Animals are grouped by mammals, reptiles, fishes, amphibians, birds or insects and other invertebrates. Info pages include images and animal sounds. Free when reviewed on 12/5/2015.

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Field Guide to Northern Territory Fauna - iTunes app

View descriptions of Northern Territory fauna together with maps of distribution, images and endangered species rating. Animals are grouped by mammals, reptiles, fishes, amphibians, birds or insects and other invertebrates. Info pages include images and animal sounds. Free when reviewed on 12/5/2015.

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Field Guide to NSW Fauna - iTunes app

View descriptions of NSW fauna together with maps of distribution, images and endangered species rating. Animals are grouped by mammals, reptiles, fishes, amphibians, birds or insects and other invertebrates. Info pages include images and animal sounds. Free when reviewed on 12/5/2015.

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Field guide to Queensland Fauna - Google Play app

View descriptions of Queensland fauna together with maps of distribution, images and endangered species rating. Animals are grouped by mammals, reptiles, fishes, amphibians, birds or insects and other invertebrates. Info pages include images and animal sounds. Free when reviewed on 12/5/2015.

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EarthViewer - iTunes app

Journey through geological time and discover changes on Earth from the Hadean time, more than 4.5 billion years ago, through to today. Find out about plate tectonics, continental movement, atmospheric conditions, life on Earth, extinction events, fossil sites and much more. Contains many features which include allowing ...

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Global change - iTunes app

Explores the global carbon and water cycles as well as the role that plants play in these cycles with particular emphasis on the stomata in the leaves. Also looks at human impact on these cycles and the climate. Includes videos, simulations showing changes over time, graphs, maps and a detailed glossary section. Free when ...

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Field guide to South Australian Fauna - iTunes app

View descriptions of South Australian fauna together with maps of distribution, images and endangered species rating. Animals are grouped by mammals, reptiles, fishes, amphibians, birds or insects and other invertebrates. Info pages include images and animal sounds. Free when reviewed on 12/5/2015.

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Watering the largest river red gum forest

This nine minute video explores the importance of environmental flows to maintain the ecological health of the Barmah-Millewa Forest in the Murray Darling Basin. This forest is a RAMSAR site and an icon site of the Living Murray with great social, economic, cultural, environmental and spiritual significance. While the forest ...

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Kids in the Garden, Ep 7: Fungi: how they grow

If a mushroom is not a plant, what is it? Discover a group of living things that are neither animals nor plants. Explore the mysterious world of fungi and find out the conditions that they need before they can grow.

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Kids in the Garden, Ep 9: Vegetable gardens

Have you ever grown vegetables? In this clip you will discover many things about vegies and how they grow. Presenter Nick Hardcastle will even show you how to make a vegetable garden in a box. Find out which vegetable is actually a flower, which are the best seasons for planting and picking, and how deep to bury seeds.