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 ...

A 200-gallon biogas generator in Oregon turns 15 pounds of food waste into cooking fuel daily. As food and yard waste decompose, methane and carbon dioxide are created, inflating the rubber bladder to ...

Biogas digesters – a simple form of technology that turns waste into fuel – have been around for centuries. But only recently have intrepid urban homesteaders begun adding this nifty piece of ...

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, ...