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Unknown. “How Wind Turbines Work.” U.S. Department of Energy. 2006. www1.eere.energy.gov (January 7, 2008)
Unknown. “Hydroelectric power: How it works.” USGS. 2006. ga.water.usgs.gov (January 7, 2008)
Nice, Karim. “How Hybrid Cars Work.” How Stuff Works. 2007. howstuffworks.com (December 13, 2007)
Unknown. “Tidal Power.” Alternative Energy. 2007. alternative-energy-news.info (December 13, 2007)
Strickland, Jonathon. “How Global Warming Works .” How Stuff Works. 2006. howstuffworks.com (December 13, 2007)
Brain, Marshall, “How Hurricanes Work.” How Stuff Works. 2005. howstuffworks.com (December 13, 2007)
Whitney, M.T., “When old electronics meet their end...” News Target. 2007. newstarget.com (January 7, 2008)
Unknown. “DIY Solar Power.” Sleepless Serf. 2007. sleeplesserf.blogspot.com (January 16, 2008)
Unknown. “Home Wind Turbine Kit.” Wind Trap. 2006. windtrap.co.uk (January 16, 2008)
Unknown. “How Wind Turbines Work.” U.S. Department of Energy. 2006. www1.eere.energy.gov (January 7, 2008)
Unknown. “Hydroelectric power: How it works.” USGS. 2006. ga.water.usgs.gov (January 7, 2008)
Nice, Karim. “How Hybrid Cars Work.” How Stuff Works. 2007. howstuffworks.com (December 13, 2007)
Unknown. “Tidal Power.” Alternative Energy. 2007. alternative-energy-news.info (December 13, 2007)
Strickland, Jonathon. “How Global Warming Works .” How Stuff Works. 2006. howstuffworks.com (December 13, 2007)
Brain, Marshall, “How Hurricanes Work.” How Stuff Works. 2005. howstuffworks.com (December 13, 2007)
Whitney, M.T., “When old electronics meet their end...” News Target. 2007. newstarget.com (January 7, 2008)
Unknown. “DIY Solar Power.” Sleepless Serf. 2007. sleeplesserf.blogspot.com (January 16, 2008)
Unknown. “Home Wind Turbine Kit.” Wind Trap. 2006. windtrap.co.uk (January 16, 2008)
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