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