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Lesson 1 Finding fossil man 2023-12-31 06:24:20
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Lesson 10 Silicon valley 2023-12-31 06:24:20
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Lesson 11 How to grow old 2023-12-31 06:24:20
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Lesson 12 Banks and their customers 2023-12-31 06:24:20
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Lesson 13 The search for oil 2023-12-31 06:24:20
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Lesson 14 The butterfly effect 2023-12-31 06:24:20
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Lesson 15 Secrecy in industry 2023-12-31 06:24:20
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Lesson 16 The modern city 2023-12-31 06:24:20
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Lesson 17 A man-made disease 2023-12-31 06:24:20
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Lesson 18 Porpoises 2023-12-31 06:24:20
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Lesson 19 The stuff of dreams 2023-12-31 06:24:20
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Lesson 2 Spare that spider 2023-12-31 06:24:20
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Lesson 20 Snake poison 2023-12-31 06:24:20
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Lesson 21 William S.Hart and the early‘Western’film 2023-12-31 06:24:20
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Lesson 22 Knowledge and progress 2023-12-31 06:24:20
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Lesson 23 Bird flight 2023-12-31 06:24:20
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Lesson 24 Beauty 2023-12-31 06:24:20
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Lesson 25 Non-auditory effects of noise 2023-12-31 06:24:20
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Lesson 26 The past life of the earth 2023-12-31 06:24:20
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Lesson 27 The ‘Vasa’ 2023-12-31 06:24:20
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Lesson 28 Patients and doctors 2023-12-31 06:24:20
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Lesson 29 The hovercraft 2023-12-31 06:24:20
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Lesson 3 Matterhorn man 2023-12-31 06:24:20
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Lesson 30 Exploring the sea-floor 2023-12-31 06:24:20
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Lesson 31 The sculptor speaks 2023-12-31 06:24:20
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Lesson 32 Galileo reborn 2023-12-31 06:24:20
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Lesson 33 Education 2023-12-31 06:24:20
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Lesson 34 Adolescence 2023-12-31 06:24:20
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Lesson 35 Space odyssey 2023-12-31 06:24:20
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Lesson 36 The cost of government 2023-12-31 06:24:20
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Lesson 37 The process of ageing 2023-12-31 06:24:20
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Lesson 38 Water and the traveller 2023-12-31 06:24:20
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Lesson 39 What every writer wants 2023-12-31 06:24:20
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Lesson 4 Seeing hands 2023-12-31 06:24:20
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Lesson 40 Waves 2023-12-31 06:24:20
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Lesson 41 Training elephants 2023-12-31 06:24:20
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Lesson 42 Recording an earthquake 2023-12-31 06:24:20
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Lesson 43 Are there strangers in space 2023-12-31 06:24:20
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Lesson 44 Patterns of culture 2023-12-31 06:24:20
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Lesson 45 Of men and galaxies 2023-12-31 06:24:20
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Lesson 46 Hobbies 2023-12-31 06:24:20
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Lesson 47 The great escape 2023-12-31 06:24:20
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Lesson 48 Planning a share portfolio 2023-12-31 06:24:20
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Lesson 5 Youth 2023-12-31 06:24:20
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Lesson 6 The sporting spirit 2023-12-31 06:24:20
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Lesson 7 Bats 2023-12-31 06:24:20
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Lesson 8 Trading standards 2023-12-31 06:24:20
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Lesson 9 Royal espionage 2023-12-31 06:24:20
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