Walls
Stuff To Blow Your Mind
English - August 20, 2013 16:07 - 26 minutes - 24.4 MB - ★★★★ - 5.5K ratingsLife Sciences Science Natural Sciences science interview comedy standup business news books health politics entrepreneurship Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
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Walls:Civilizations surround themselves in walls. They raise walls against enemies, against the environment and against the spirit world. In this classic episode, Robert and Julie examine walls, from Ming Dynasty battlements to the galactic borders of our universe.
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