- (2006-04-19 23:54:41)Lesson 1 Finding Fossil man
- (2006-04-19 23:54:41) Lesson 2 Spare that spider
- (2006-04-19 23:54:36) Lesson 3 Matterhorn man
- (2006-04-19 23:54:36)Lesson 4 Seeing hands
- (2006-04-19 23:54:32) Lesson 5 Youth
- (2006-04-19 23:54:32) Lesson 6 The sporting spirit
- (2006-04-19 23:54:28)Lesson 7 Bats
- (2006-04-19 23:54:28) Lesson 8 Trading standards
- (2006-04-19 23:54:24) Lesson 9 Royal espionage
- (2006-04-19 23:54:24) *Lesson 10 Silicon valley
- (2006-04-19 23:54:19)Lesson 11 How to grow old
- (2006-04-19 23:54:19)Lesson 12 Banks and their customers
- (2006-04-19 23:54:15)Lesson 13 The search for oil
- (2006-04-19 23:54:15)Lesson 14 The Butterfly Effect
- (2006-04-19 23:54:11)Lesson 15 Secrecy in industry
- (2006-04-19 23:54:11)Lesson 16 The modern city
- (2006-04-19 23:54:07) Lesson 17 A man-made disease
- (2006-04-19 23:54:07) Lesson 18 Porpoises
- (2006-04-19 23:54:03)Lesson 19 The stuff of dreams
- (2006-04-19 23:54:03)Lesson 20 Snake poison
- (2006-04-19 23:53:59) Lesson 21 William S. Hart and the early ‘Western’ film
- (2006-04-19 23:53:59)Lesson 22 Knowledge and progress
- (2006-04-19 23:53:54)Lesson 23 Bird flight
- (2006-04-19 23:53:54)Lesson 24 Beauty
- (2006-04-19 23:53:49)Lesson 25 Non-auditory effects of noise
- (2006-04-19 23:53:49)Lesson 26 The past life of the earth
- (2006-04-19 23:53:45)Lesson 27 The ‘Vasa’
- (2006-04-19 23:53:45)Lesson 28 Patients and doctors
- (2006-04-19 23:53:41)Lesson 29 The hovercraft
- (2006-04-19 23:53:41) Lesson 30 Exploring the sea-floor
- (2006-04-19 23:53:36)Lesson 31 The sculptor speaks
- (2006-04-19 23:53:36) Lesson 32 Galileo reborn
- (2006-04-19 23:53:32) Lesson 33 Education
- (2006-04-19 23:53:32) Lesson 34 Adolescence
- (2006-04-19 23:53:27)Lesson 35 Space odyssey
- (2006-04-19 23:53:27)Lesson 36 The cost of government
- (2006-04-19 23:53:23)Lesson 37 The process of ageing
- (2006-04-19 23:53:23)Lesson 38 Water and the traveler
- (2006-04-19 23:53:19)Lesson 39 What every writer wants
- (2006-04-19 23:53:19)Lesson 40 Waves
- (2006-04-19 23:53:16) Lesson 41 Training elephants
- (2006-04-19 23:53:16) Lesson 42 Recording an earthquake
- (2006-04-19 23:53:13)Lesson 43 Are there strangers in space?
- (2006-04-19 23:53:13)Lesson 44 Patterns of culture
- (2006-04-19 23:53:09)Lesson 45 Of men and galaxies
- (2006-04-19 23:53:09)Lesson 46 Hobbies
- (2006-04-19 23:52:46)Lesson 47 The great escape
- (2006-04-19 23:52:46)Lesson 48 Planning a share portfolio
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