Wall of Wood

forest are ecologically managed now. You just have to choose where your wood comes from. No waste there Alex, just renewable materials.
Example :
http://en.wikipedia.org/wiki/Programme_for_the_Endorsement_of_Forest_Certification_schemes
and
http://en.wikipedia.org/wiki/Forest_Stewardship_Council

On cordwood masonry : although the thickness of the wall brings some insulation, some examples show a lot of mortar, which are going to be a big thermal bridge. Interesting design wise but not eco friendly I think.

hehe.

I have to chime in with L; why is this any kind of waste of natural resources? If it was a stack of firewood-size sticks, maybe I'd agree, but I'd bet the pieces are all less than a half-inch thick. I kinda like the look.

My basement family room is covered with 1" knotty pine carsiding that was installed in the '50's; I don't think anyone has ever considered something like that to be wasteful. If you do, you probably haven't thought much about what's involved in construction.

Welcome to the world of cordwood masonry.

It looks like cord wood. I stacked more than that a couple of weeks ago. I don't think it's really that attractive (that's why my woodpile is out behind the garage) and woodpiles are also spider central.