These items have the 'Carl Sagan' tag.
video_20180731-144520
video
Carl Sagan on humanity, history, the universe, and us
May 6th, 2015; 1994
Earth
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animation
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humankind
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video
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Carl Sagan
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humanity
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history
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Pale Blue Dot
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importance
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humans
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living
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struggle
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passion
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experience
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life
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