Season 1
1.
Natural Selection
2.
Instinct
3.
Variation Under Nature
4.
Effects of External Conditions
5.
Conditions of Existence
6.
Variations Under Domestication
7.
Parts Developed in an Unusual Manner
8.
Entangled Bank
9.
Unconscious Selection
10.
Endless Forms Most Beautiful
Season 2
1.
Nature Under Constraint and Vexed
2.
Governed by Sound Reason and True Religion
3.
Mingling Its Own Nature with It
4.
Governed As It Were by Chance
5.
Ipsa Scientia Potestas Est
6.
To Hound Nature in Her Wanderings
7.
Knowledge of Causes, and Secret Motion of Things
8.
Variable and Full of Perturbation
9.
Things Which Have Never Yet Been Done
10.
By Means Which Have Never Yet Been Tried
Season 3
1.
The Weight of This Combination
2.
Transitory Sacrifices of Crisis
3.
Formalized, Complex, and Costly
4.
Newer Elements of Our Defense
5.
Scarred by Many Past Frustrations
6.
Certain Agony of the Battlefield
7.
Community of Dreadful Fear and Hate
8.
Ruthless in Purpose, and Insidious in Method
9.
Insolvent Phantom of Tomorrow
10.
History Yet to Be Written
Season 4
1.
The Collapse of Nature
2.
Transgressive Border Crossing
3.
The Stigmata of Progress
4.
From Instinct to Rational Control
5.
Human Raw Material
6.
The Scandal of Altruism
7.
The Antisocialism of Sex
8.
The Redesign of Natural Objects
9.
The Mitigation of Competition
10.
From Dancing Mice to Psychopaths
Season 5
1.
The Few Who Dare
2.
Clutch of Greed
3.
Beneath Her Heart
4.
Let the Children and Childbearers Toil
5.
Ease for Idle Millionaires
6.
Manacled Slim Wrists
7.
Gag or Throttle
8.
Guillotines Decide
9.
One Fettered Slave
10.
To Right the Wrongs of Many
