published on: 2013-05-01 07:46:29
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![arnaia: Carl Sagan on humans (from The Sagan Series) [x]](http://69.media.tumblr.com/b8fcbeac98c3641de7afb5e3dbc5a3ff/tumblr_mlm4e543kg1qheym2o1_r1_250.gif)
arnaia: Carl Sagan on humans (from The Sagan Series) [x]
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