Cob is made of earth, straw and sand, and dries to a hardness similar to lean concrete.
It is very earthfriendly, so we intend to build a cob house within a coouple of years, once we can afford the land. Cob is far less resource extractive, energy intensive, wasteful and expensive than conventionally built homes. I know of several books which may be of interest to you, and I'd be happy to share any sources, sites, thoughts, or ideas if you want to e-mail me. Cob is made of earth, straw and sand, and dries to a hardness similar to lean concrete. It is very earthfriendly, so we intend to build a cob house within a coouple of years, once we can afford the land.