A timeline of energy including all energy types and a detailed page about the famous names in energy history.
http://www.eia.doe.gov/kids/history/timelines/index.html
http://www.solarcentury.com/knowledge_base/articles/energy_efficiency
Some great background info and cool (American) Watt's on your Mind teaching resources
http://www.wattsnew.com/learn3/teachlounge.html
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