Hej!
Here is a preview of the wall that earthLAB is helping to build at Simmenäs, Allingsås, where Daniel and Karolina are building their straw bale house. The wall functions as a heat source due to its thermal capacity.
Daniel and Karolina have a blog (in Swedish) about the building of the house: http://halmhuset-korpaberget.blogspot.se/
/David