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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
Music
“Over the River and Through the River” – Father Sleep

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Have an idea for an episode or an amazing science question you want answered? Leave a comment below!

Tweet at me: @jtotheizzoe
Email me: itsokaytobesmart [at] gmail [dot] com
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For more awesome science, check out: http://www.itsokaytobesmart.com

Written and hosted by Joe Hanson
Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios

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Want some more great science?

Check out my last episode: Animal Superpowers
http://www.youtube.com/watch?v=e69yaWDkVGs

Want more? Watch: Rainbows
http://www.youtube.com/watch?v=5pYnC-ONdXQ

Want even MORE? “Bloopers Vol. 1”
http://www.youtube.com/watch?v=xahPvbNvGTA

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