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	Podcast:		BrainStuff
	Episode:		Who Built Ohio's Serpent Mound?
	Category:		Science & Medicine
	Duration:		00:04:27
	Publish Date:		2022-05-03 21:00:00
	Description:		The Serpent Mound, a vast effigy built on a meteorite crater's edge in what's now Ohio, may be 900 years old -- or much older. Learn what we know and don't know in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/environmental/earth/archaeology/ohio-serpent-mound.htm See omnystudio.com/listener for privacy information.
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