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Grassroots inventors offer eco-inventions.
Find out how one group builds homes that cost nothing to heat or cool.
Free | Discovery Channel
Length: 02:10
Posted: 5/29/2009
The Invention Nation Team checks out a system to transform sound waves into refrigeration.
Free | Discovery Channel
Length: 04:20
Posted: 5/29/2009
Right out of science fiction, engineers have found a way to boost solar cell performance...
Free | Discovery Channel
Length: 03:23
Posted: 5/29/2009
A company is converting construction waste into a usable fuel.
Free | Discovery Channel
Length: 02:39
Posted: 5/29/2009
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Premiered: November 19, 2007, on Discovery Science
Rating: TV-G
User Rating: (2 ratings)
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Premise: Grassroots inventors offer eco-inventions.

Invention Nation Cast

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