insulation value, can hold a screw, and can be painted. By dispensing with Portland cement, it has even less embodied energy content than papercretealthough it dries much more slowly. Papercrete and fidobe building is spreading rapidly, with new more convenient mixer and pump designs starting to appear. Plans for commercial production of papercrete blocks are also being discussed, which when realized should increase its use dramatically. Earthbag construction is growing even more rapidly than papercrete, with the technique often being combined with other natural building systems, like straw bales and cordwood masonry. It is one of the best examples of the imagination and experimentation taking place in movement, and also how aesthetics and community spirit are being applied in materials development.