| Description |
1 online resource (streaming video file) (27 min. 15 sec.) ; 164175765 bytes |
| Summary |
*Aboriginal and Torres Strait Islander viewers are advised that the following program may contain images and voices of people who have died*Mysterious creatures from the depths of the Southern Ocean; did humans kill off Australia's megafauna?; and gardens taking the heat out of hi-rise.TRAWL TEAMThe sea floor of the Southern Ocean covers a vast area stretching right around the globe - much of it is more than two kilometres down. The mysterious benthic life - that is, what lives on the seafloor - has only recently started to be revealed. This rugged realm is home to delicate and bizarre creatures like the sea spiders, polychaete worms and ancient bamboo coral that the research team bring aboard. Mark Horstman and cameraman Kevin May spent a month in Antarctic waters to work alongside the trawl team at the bottom of the world. While surveying protected areas, underwater cameras capture startling evidence of illegal long line fishing. Compelling proof comes when 3km of rope and rusty hooks is snared in one of the trawl nets and dragged aboard the Aurora Australis.MEGAFAUNAGiant Marsupials thrived in Australia for over a million years until they completely disappeared somewhere around 40,000 years ago....give or take some tens of thousands of years!What exactly happened to the giant wombats, killer kangaroos, monstrous geese and other beasts has been the source of contentious debate. One school of thought is that the arrival of humans sealed their fate by swiftly hunting them into extinction, while others contend that other factors were to blame. Paul Willis travels to the only archaeological dig in the country that might be able to answer this and other prehistoric mysteries.GREEN ROOFSOn a hot day, office workers are protected from the heat outside by power hungry, air-conditioned buildings. Ironically, the buildings themselves contribute to the heat of the day, as clusters of the concrete and brick structures create what is known as the heat island effect. In the first of a series of reports on the science of sustainability, Tanya Ha turns her infrared spotlight to rooftops to demonstrate the benefits of a really efficient cooling system - commonly known as the garden! |
| Notes |
Closed captioning in English |
| Event |
Broadcast 2010-05-20 at 20:00:00 |
| Notes |
Classification: G |
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Air conditioning -- Efficiency.
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Air conditioning -- Equipment and supplies.
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Aquatic animals -- Ecology.
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Benthic animals.
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Extinction (Biology)
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Marsupials.
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Antarctic Ocean.
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Australia.
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Streaming video
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| Author |
Boney, Chris, contributor
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Constable, Andrew, contributor
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Ewing, Graeme, contributor
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Field, Judith, contributor
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Fletcher, Tim, contributor
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Ha, Tanya, reporter
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Hess, Dominique, contributor
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Hibberd, Ty, contributor
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Horstman, Mark, reporter
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Phillips, Graham, host
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Rayner, John, contributor
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Williams, Nick, contributor
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Willis, Paul, reporter
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