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Lesson 1 (Food Crops)
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Lesson 2 (Disaster)
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Lesson 3 (Evolution and Migration)
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Lesson 4 (Petroleum Alternatives)
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Lesson 5 (Time Efficiency)
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Lesson 6 (Ancient Life)
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Lesson 7 (Computers)
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Lesson 8 (Energy)
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Lesson 9 (Memory)
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Lesson 10 (Spirituality)
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Lesson 11 (Illness)
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Lesson 12 (Surgery)
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Lesson 13 (Ghosts)
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Lesson 14 (Anthropology)
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Lesson 15 (Social Inequality)
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Lesson 16 (Expertise)
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Lesson 17 (Military Operations)
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Lesson 18 (War and Conquest)
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Lesson 19 (History)
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Lesson 20 (Financial Systems)
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Lesson 21 (Wealth and Social Class)
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Lesson 22 (Personal Property)
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Lesson 23 (Employment)
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Lesson 24 (International Trade)
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Lesson 25 (Politics)
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Lesson 26 (A Reasonable Doubt)
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Lesson 27 (The Police)
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Lesson 28 (Investigating Crimes)
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Lesson 29 (Government Corruption)
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Lesson 30 (Crimes at Sea)
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Lesson 31 (The War on Drugs)
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Lesson 32 (Family Relationships)
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Lesson 33 (Friendship)
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Lesson 34 (Passion)
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Lesson 35 (Negative Emotions)
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Lesson 36 (Social Rebels)
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Lesson 37 (Painting and Sculpture)
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Lesson 38 (The Written Word)
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Lesson 39 (Entertainment)
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Lesson 40 (Risky Fashions)