http://www.permaculture-sf.org/monthly-guild-gathering-diy-cold-climate-biogas-unit/ Come to the permaculture guild gathering on August 2nd at 6:30pm to hear David ...
Most professionals in the energy industry know about biomass; fewer of us are conversant with biogas. This commentary explains the basics of biogas, with a focus on its current use and future ...
David Kuchta, Ph.D. has 10 years of experience in gardening and has read widely in environmental history and the energy transition. An environmental activist since the 1970s, he is also a historian, ...
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