Contents 3
1．Water Power 3
2．Coal 5
3．Gas 8
4．Salt 11
5．What people Don′t Know about Air 15
6．About Electricity 19
7．Conversion of Energy 23
8．Geothermal and Solar Energy 29
9．Solar Water Heating 33
10．Some Power Problems 37
11．Noise 42
12．Energy and Building Design 46
13．An Open Letter to the President（1） 52
14．An Open Letter to the President（2） 61
15．Are We Alone？ 68
16．The Sun 71
17．The Lunar Surface Environment 75
18．Where We Are 79
19．Detecting Black Holes 83
20．Our Future in Space：It Has Already Begun！ 87
21．VBNUS--The Burning Question 95
22．Breathing below the Surface of the Sea 100
23．Mysteries of the Sea 104
24．Can We Predict Earthquakes？ 110
25．Neonatology 117
26．Hydroponics：Farming Without Dirt 121
27．Biofeedback--Learning More Control 127
28．Using the Mind against Disease 131
29．Hang Gliding 137
30．Dreams That Saved Lives 141
31．Water′s Wondrous Talents 147
32．Cooling with Sound 153
33．Cheaper and Better than Drugs？ 156
34．New Carbon Calendar 161
35．Some Practical Uses of Radioisotopes 165
36．A Look at the Future 174
37．old or New Technology？ 179
38．The Modern Wonder of Electronics 183
39．Telepathy 188
40．What Are Computers？ 192
41．Space Computers 202
42．The Magic of Microelectronics 208
43．Black Gold 214
44．Science Education for a New Age 221
45．Man Searches for Life in Space 229
46．Basic and Applied Research 238
VOCABULARY 247