Ridiculous and lovely wooden sphere
Over at Make: Blog, George Hart shows that if you put a challenge out there, no matter how crazy, someone might just do it. So 15 years after he made some plans for a theoretical sphere made with 480 wooden pieces and 960 connections, someone actually built it. In this case it was Thomas Guethner of Trostberg, Germany. It's a ridiculous project to take on, but I'm happy that he did it, the results look great!
Math Monday: Nailbanger's Nightmare