This video explores the factory processes of recycling, iron, aluminium, glass, paper, water and building materials. And what is the environmental cost of not recycling?
Subjects: Earth Science
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Renewable Energy
The work of front line renewable energy research scientists and the commercial applications. Topics include the future of fossil fuels; solar – photovoltaic, thermal and wind; critical new energy storage technologies; the concept of energy pay back; social issues.
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Plate Tectonics
The changing face of our planet is due to volcanic eruptions, earthquakes, sea floor spreading, subduction zones and mountains pushing up. Maps and international footage provide a clear picture of how tectonic plates move and form. The theory of Pangaea and how the continents have positioned themselves is depicted.
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The Pond
Ponds offer a unique opportunity for scientific study. If you think of any key biological concept there’s a good chance you’ll find it illustrated in, or around a pond. They are fine examples of the biosphere in action. “The Pond” examines: community ecology, the importance of biological communities and how scientists work to understand complex scientific concepts by breaking things down into communities; food chains and food webs, including the complexities and problems of examining a food web; key biological process including photosynthesis, the oxygen/carbon cycle and energy transfer along a food chain; the importance of the detritus pathway; adaptations of and interactions between living organisms.
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Ozone
A look at the Ozone including its molecular structure, physical properties, practical uses and the importance of the Ozone as a filter of UV A look at the Ozone including its molecular structure, physical properties, practical uses and the importance of the Ozone as a filter of UV radiation. Includes test methods for detecting the presence of ozone and the atmospheric processes that create and destroy it.
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Mining in Canada
Topics covered include the mining process, open pit & underground; the economy, we look at four mining towns to see the cashflow generated by a mine. Also the flow on effect on jobs and services; the environment, acid rock drainage produced and treated at a shut down mine. Revegetating rock and tailings dumps. Acid rain; the social life in a mining town and recovery after a mine closure.
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Gene Tech Tapes – Pt 5
Featuring leading international ethicists and scientists, this compilation of interviews canvases key ethical issues in the controversial world of new agricultural genetic technologies. Topics include the question of regulation; genetic foods are needed to help feed the world; should we label genetically modified foods; risks to health and environment.
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Glaciers and Glaciation
North American Version. Development and characteristics of glaciers in different stages, including their movement, their effect on mountain features and landforms, and their advancement and retreat. The water, or hydrologic cycle is reviewed in terms of its importance to the buildup of ice and snow during periods of global cooling. Some concepts and landforms are illustrated through demonstrations and computer imagery.
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Greenhouse
An excellent example of the scientific process. Topics include observation of the past temperatures of the earth (using oxygen isotopes in ice cores) and the present quantity of greenhouse gases; construction of a computer model of the greenhouse effect with such variables as clouds, cities and plants; testing the model by using data from the past to predict present conditions.