I have just taken a workshop with Dome Gaia, They are teaching how to build with AirCrete. Its basically foam injected concrete. They have made and few tools and have developed some super creative techniques to help people build there own affordable housing.
I feel the permi community is a perfect place to plant this seed of innovation.
Stoked for this to catch on.
You can't expect to wield supreme executive power just because
Switching from electric heat to a rocket mass heater reduces your carbon footprint as much as parking 7 cars