answer::D I saw “earthen home” and was about to rant and rave about hobbit houses and how much I would love to live in them, but you already have that covered! They wouldn’t need a/c, would need only very mild heating, and would lose less heat therefore saving energy. They wouldn’t require as many building materials, or destruction of natural landscapes/habitats to nearly as significant a degree as modern homes and subdivisions. Gaaahhhh!!! Hobbit houses are my dream home.