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The Search for Clean Air
 This program presents a clear, forceful, and thorough exposition of the problems of air pollution: its causes; its effects on forests, streams, and human health; and the issues involved in correcting the problems. Narrated by Walter Cronkite, the pro...(more details) |
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$169.95 |
| DVD |
$169.95 |
| DVD + 3-Year Streaming |
$254.93 |
| 3-Year Streaming |
$169.95 |
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The Environment: A Historical Perspective
 From the first agricultural settlements, to the industrial revolution, to agribusiness and widespread urbanization, humans have been transforming the environment for thousands of years. But now, with rain forests disappearing at an appalling rate, po...(more details) |
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| VHS |
$79.95 |
| DVD |
$79.95 |
| DVD + 3-Year Streaming |
$119.93 |
| 3-Year Streaming |
$79.95 |
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Alternative Power Sources and Renewable Energy
 This program demonstrates how wind turbines, solar cells, hybrid automobiles, and coal gasification plants are beginning to transform the way the world is powered. The U.S. Secretary of Energy, the director of the National Wind Technology Center, the...(more details) |
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| VHS |
$129.95 |
| DVD |
$129.95 |
| DVD + 3-Year Streaming |
$149.93 |
| 3-Year Streaming |
$99.95 |
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Wastewater Treatment and Discharge
 This program illustrates the physical, biological, and chemical treatment processes required to decontaminate industrial and residential wastewater and describes ways in which discharge is being put to work. Two wastewater treatment facilities are to...(more details) |
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$149.95 |
| DVD |
$149.95 |
| DVD + 3-Year Streaming |
$224.93 |
| 3-Year Streaming |
$149.95 |
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Business and Residential Recycling and Waste Minimization
All across America, children and adults are learning three new R's: reduce, reuse, and recycle. Episode one of this program describes how companies can divert office, industrial, and manufacturing waste from the solid waste stream, while episode two ...(more details) |
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