Why, build a level three Menger Sponge, of course! What the heck is a Menger Sponge? Glad you asked. It's a three-dimensional fractcal cube of sorts, first described by Austrian mathematician Karl Menger in 1926. When, some seventy years later, Dr. Jeannine Mosely found herself confronted with a gargantuan pile of business cards, rendered useless after the company she worked for changed addresses, she knew what she had to do with them: hand-make a real, live Menger Sponge -- creating an actual object... READ ON