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 post 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 and 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

Workbook key