Toilet, Part 2

Modern marvel... Mong Pro/ShutterStock

While the toilet is not THE most important invention, it's certainly hard to imagine life without one -- and the advantages of modern flushing toilets go far beyond mere convenience. In this Invention two-parter, Robert Lamb and Joe McCormick explore the ancient origins of the toilet and the origins of the modern flush toilet.

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Toilets, Part 1 (podcast)

Evolution of the Anus (STBYM)