Tetris challenge accepted Find out what goes inside a fridge, a school gym, or a music band van There are so many things around us that we cannot see inside. All those cabinets, suitcases, and closed doors--be they small, big, mysterious, or even quite plain, they make you wonder what's inside them. Food goes inside a fridge. Laundry goes inside a washing machine. That's obvious, right? But what about a fire...