For years, farmers in my area baled their grass in large, round bales which had no use other than to feed farm animals.
Recently, they have started baling in large rectangular bales. They really are large, requiring some kind of equipment to move around. The neat thing about the square bales is they can be stacked really high in barns with no lost space between bales. The farmers tend to stack them in the field also forming large, flat; walls of hay.
I am curious if anyone has ever constructed a home with the exterior walls made of stacked small hay bales enclosed inside sealed walls to prevent moisture getting to the hay and rotting it. I think there would be some amount of compression of the lower bales over time, but it should provide good insulation in summer and winter.
The number of people on this forum who have an environmental conscience is why I am asking here.