Contents 1
1．Life in the Universe 1
2．Killing Pain(Ⅰ) 6
3．Killing Pain (Ⅱ) 12
4．The Eskimos 17
5．The Desert 22
6．Silk 26
7．Cotton 31
9．Salt 41
10．How Electricity is Made 45
8．Iron and Steel 46
11．Skin-Diving 50
12．What Helicopters Do for Us 55
14．Digging Up History 65
13．The Sea World 66
15．How Do the Films Do It 70
16．Cleaning and Mounting Stamps 76
17．Man-made English Bricks 80
18．"Sleeping"Sharks 85
19．Two Kinds of Reader 90
20．On Buying Books 94
21．On the Roof of the World 99
22．A Winter to Remember 103
23．What People Don't Know about Air 108
24．Rockets 113
Glossary 118