After the NYC marathon, where does all the poop go? https://t.co/ryw2xtqSc4 via @PopSci https://t.co/cY8m3kfSvh

After the NYC marathon, where does all the poop go? https://t.co/ryw2xtqSc4 via @PopSci http://pic.twitter.com/cY8m3kfSvh

— Flush This (@flushthis) December 7, 2017

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