They have witnessed the birth and death of kings and have risen and crumbled alongside empires. What are they? Toilets! Over the years, the toilet has been given several names, including privy, loo, and outhouse, to name a few. But no matter what they're called, we all use them for the same thing. From ancient cesspits to the talking toilets of tomorrow, get the full scoop on this marvelous invention and how its gross, grimy past has given us a brighter, cleaner future.