Every time you flush, your poo and pee start an epic journey. From the toilet, to the sewers, to a treatment plant, our waste travels quite a distance only to end up cleaner by the end. We'll hear from a "PooTube" star about her experience with "the flush." We'll also hear about ancient sewers, a "fatberg" under London and a toilet that cleans waste on site. Plus, our Moment of Um answers why you can feel your heart beating in your neck of all places.This episode was sponsored by:Indeed (Indeed.com/BRAINS - For a $100 sponsored job credit Terms and conditions apply. Offer good for a limited time.)Shopify (Shopify.com/brainson - For a free 14-day trial and full access to Shopify's entire suite of features.)See omnystudio.com/listener for privacy information.

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