Imagine a world where the primary building material were mushrooms. Well it might not be too far off. When mushrooms grow the tiny fibrous root system that supports the fungi is called Mycelium. Apparently when dried this stuff is tougher than any proverbial nails. Non toxic, water resistant (something most bricks really aren’t) and mold resistant to boot. So in reality it could be used as support beams and insulation i the same home. Smurfy! A company called Ecovative is trying to bring this unusual building material to the public.