We think nothing of flushing a toilet and getting rid of human waste. One pull on the handle and the job's taken care of. But sending our business on its way is only half the story. Once past the U-bend, excreta begins a long and fascinating journey, one that has its origins in antiquity and some of the world's earliest sanitation systems. Today, modern waste management plants conveniently dispose of our processed liquids and solids. But how did previous civilizations deal with the problem of sewage?
Click through and flush out the facts behind history's fascinating sewage systems.