Getting down to the physical nitty-gritty of actually building a home is an excellent place to start. Well, let me explain. A paper house isn't made out of sheets of paper blowing in the wind. Instead, it's built with a type of industrial-strength paper mach called fibrous cement . When dry, fibrous cement is lightweight, an excellent insulator, holds its shape well, and is remarkably strong.
Fibrous cement is highly fire-resistant.
Since the individual paper fibers are saturated with cement, oxygen doesn't have a chance to penetrate, and combustion cannot be sustained. I tried an experiment, aiming a propane torch at a fibrous cement block to see what would happen. The block charred on the surface where the flame hit it, but it didn't burn after several minutes of direct flame. A piece of 1x2 lumber, by comparison, burst into flame within a few seconds of being torched. There is no other building material that can make this claim.