Where Does Your Sewage Go? | I Didn't Know That

Visit the Becton Sewage Treatment Works—one of Europe's biggest plants—which processes sewage from 3.4 million Londoners into water clean enough to return to the Thames.
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Two industrial scientists, Richard Ambrose and Jonny Phillips, explain the science behind everyday life... from microwave ovens to beating a lie detector.

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Where Does Your Sewage Go? | I Didn't Know That
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