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We should get inspiration of this book which explains how Fab lab, DIWO and web culture will transform society Jeremy Rifkin. The Third Industrial Revolution: How Lateral Power is Transforming Energy, the Economy, and the World, Palgrave Macmillan 2011.

Lots of resources about biogas generation DIY

A selection of stats in English : http://en.wikipedia.org/wiki/Anaerobic_digestion http://en.wikipedia.org/wiki/Biogas http://fr.wikipedia.org/wiki/Biogaz ... and in French and German too look at the page, the guy made a kind of micro SoA and posted it in his blog. You also have a link to a tool in German to calculate the production of a biogas digester

Here we can see that Opensource Hardware" is a n expression mostly used for computer-related hardware. It is intersting to evaluate if OSE and wikispeed should relate to other branches of opensources, non-computerized ones ?

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