Edit this Published in Freakonomics Radio The Power of Poop Listen Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/164229/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend Since the beginning of civilization, we’ve thought that human waste was worthless and dangerous. What if we were wrong?