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	Podcast:		MinutePhysics
	Episode:		What is Sea Level?
	Category:		Science & Medicine
	Duration:		00:03:38
	Publish Date:		2013-11-25 16:22:37
	Description:		When we say Mt. Everest is 8850m tall, how do we know what sea level would be beneath the mountain?
	Total Play:		0