Riven
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The Nature of Things
Season 51
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Episodes
Episode 1
Oct 13, 2011
Episode 2
Oct 20, 2011
Episode 3
Oct 27, 2011
Episode 4
Nov 10, 2011
Episode 5
Nov 17, 2011
Episode 6
Nov 24, 2011
Episode 7
Dec 1, 2011
Episode 8
Dec 8, 2011
Episode 9
Jan 12, 2012
Episode 10
Jan 19, 2012
Episode 11
Jan 26, 2012
Episode 12
Feb 2, 2012
Episode 13
Feb 9, 2012
Episode 14
Feb 16, 2012
Episode 15
Feb 23, 2012
Episode 16
Mar 15, 2012
Episode 17
Mar 22, 2012
Episode 18
Apr 8, 2012