Unit 1 1
Lesson 1 Finding fossil man 1
Lesson 2 Spare that spider 6
Lesson 10 Silicon valley 10
Lesson 3 Matterhorn man 11
Lesson 4 Seeing hands 23
Lesson 5 Youth 31
Lesson 6 The sporting spirit 40
Lesson 7 Bats 48
Lesson 8 Trading standards 55
Unit 2 58
Lesson 9 Royal espionage 58
Lesson 11 How to grow old 72
Lesson 12 Banks and their customers 78
Lesson 13 The search for oil 85
Lesson 14 The Butterfly Effect 90
Lesson 15 Secrecy in industry 94
Lesson 16 The modern city 101
Unit 3 107
Lesson 17 A man-made disease 107
Lesson 18 Porpoises 115
Lesson 19 The stuff of dreams 129
Lesson 20 Snake poison 130
Lesson 21 Williams S.Hart and the early Western film 138
Lesson 22 Knowledge and progress 147
Lesson 23 Bird flight 154
Lesson 24 Beauty 163
Unit 4 171
Lesson 25 Non-auditory effects of noise 171
Lesson 26 The past fife of the earth 178
Lesson 27 The Vasa 182
Lesson 28 Patients and doctors 192
Lesson 29 The hovercraft 198
Lesson 30 Exploring the sea-floor 200
Lesson 31 The sculptor speaks 204
Lesson 32 Galileo reborn 211
Unit 5 220
Lesson 33 Education 220
Lesson 34 Adolescence 226
Lesson 36 The cost of government 236
Lesson 37 The process of ageing 240
Lesson 38 Water and the traveller 246
Lesson 39 What every writer wants 248
Lesson 40 Waves 253
Unit 6 258
Lesson 41 Training elephants 258
Lesson 42 Recording an earthquake 267
Lesson 43 Are there strangers in space? 272
Lesson 44 Patterns of culture 276
Lesson 45 Of men and galaxies 285
Lesson 46 Hobbies 291
Lesson 47 The great escape 298
Lesson 48 Planning a share portfolio 304
Lesson 35 Space odyssey 933