See also - The astounding Low Tech Magazine https://solar.lowtechmagazine.com/ https://solar.lowtechmagazine.com/ - Appropriate Technologies wiki https://www.

See also - The astounding Low Tech Magazine https://solar.lowtechmagazine.com/ https://solar.lowtechmagazine.com/ - Appropriate Technologies wiki https://www.appropedia.org/ https://www.appropedia.org/ - Global Village Construction Kit https://www.opensourceecology.org/gvcs/ https://www.opensourceecology.org/gvcs/ (blueprints for 50 open source technologies that are fundamental to civilization)