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.
For my next feat, I will require a volunteer from the audience! Perhaps this tiny ad?
Binge on 17 Seasons of Permaculture Design Monkeys!