Carl Sagan Videos: The Earth as a Planet (Part 5/6)

Name: Carl Sagan Videos: The Earth as a Planet (Part 5/6)
Uploaded: 2010-09-10T22:56:29+00:00
Duration: 595 s
Channel: Carl Sagan
Description: http://www.CarlSaganVideos.com Carl Sagan Planets Christmas Lectures: The Earth as a Planet (Part 5/6)

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http://www.CarlSaganVideos.com <br /><br />Carl Sagan Planets Christmas Lectures: The Earth as a Planet (Part 5/6)