http://www.nrel.gov/docs/fy04osti/36277.pdf
http://ecogadget.net/2007/12/24/how-to-save-353-per-year-in-5-easy-steps-and-spend-only-98/
www.nrel.gov/docs/fy01osti/29236.pdf
http://earth911.com/blog/2009/11/16/reuse-your-odd-plastic/
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