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Why do we build monuments? What are they made of?
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I took a trip to Washington D.C. to check out some of our nation’s most famous monuments. Where do they come from? From the depths of the Earth to the distant reaches of the cosmos, you’ll never look at history the same way again
“Over the River and Through the River” – Father Sleep
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Written and hosted by Joe Hanson
Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios
Want some more great science?
Check out my last episode: Animal Superpowers
Want more? Watch: Rainbows
Want even MORE? “Bloopers Vol. 1”