In August 2006 David Holmgren was joined by Richard Heinberg, leading environmental educator from California, on a public speaking tour of Australian capital cities explaining the truth and opportunities from the coming end of cheap energy.
Source: Permaculture Principles
David Holmgren, co-founder of Permaculture, here offers a vision of a radically retrofitted, food producing suburbia.
Source: Permaculture Principles
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