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