A great explanation of wood-working joints.
Website about Cluj with a useful zoomable map of the area.
Impressive research-by-example work done in Wales – with a comprehensive offering of books, courses and consultation services.
Detailed descriptions for a basic do-it-yourself wind-turbine.
Straw bale building services in Canada (website seems out-dated).
Covers a wide range of topics around natural home building.
Three great videos introducing building with hemp: