the Encyclopedia of Alternative Energy and Sustainable Living

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The Encyclopedia is a large, free, on-line resource aimed at providing accurate information on living in harmony with our planet, particularly with regard to green energy and architecture. It is part of The Worlds of David Darling website and is maintained and updated on a full-time daily basis by the astronomer and author David Darling.

 

http://www.daviddarling.info/encyclopedia/AEmain.html