Evolution of the Anus

The human anus. Lars Neumann / Getty Images/iStockphoto

Chances are, you take the anus for granted -- at least so long as it’s behaving itself. Yet this fascinating anatomical feature has a deep evolutionary history and is itself a marvel of engineering. Join Robert and Joe for a look at this most marvelous alimentary portal.

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Topics in this Podcast: Anatomy, biology, poop, evolution