Unit 1 The Hydrogen Economy 1
Text Ⅰ Fuel Cells 6
Text Ⅱ The Impossibility of Rapid Energy Transitions 23
Text Ⅲ Filling up with Hydrogen 26
Unit 2 Space Exploration 32
Text Ⅰ The Unearthly Landscapes of Mars:The Red Planet Is No Dead Planet 37
Text Ⅱ Chariots in the Sky 50
Text Ⅲ Space Explorations Around the World 55
Unit 3 Clean Energy 65
Text Ⅰ The Green Job 69
Text Ⅱ Is It Time to Stop Putting Food in Our Cars? 81
Text Ⅲ Hot Rocks,Cool Technology 87
Unit 4 Evolution 94
Text Ⅰ Who Was More Important:Lincoln or Darwin? 98
Text Ⅱ Are We Still Evolving? 110
Text Ⅲ The Nature of Emotions 117
Unit 5 Mind and Brain 127
Text Ⅰ The Value of Positive Emotions 132
Text Ⅱ Why We Sleep 144
Text Ⅲ Facing Darkness 154
Unit 6 Climate Change 165
Text Ⅰ Carbon Dioxide and the Climate 171
Text Ⅱ A Cheap and Easy Plan to Stop Global Warming 180
Text Ⅲ Ecological Responses to Climate Change on the Antarctic Peninsula 192
Unit 7 Automation 207
Text Ⅰ Automation on the Job 211
Text Ⅱ Avoiding the Digital Dark Age 223
Text Ⅲ Farmerbots:A New Industrial Revolution 230
Unit 8 Genetic Engineering 242
Text Ⅰ Seeds of Concern 247
Text Ⅱ GM Crops:Battlefield 261
Text Ⅲ Impacts of Genetically-Modified Crops and Seeds on Farmers 269
Unit 9 Design:the Artist v.s.the Engineer 280
Text Ⅰ A History of Scholarship on American Automobile Design 284
Text Ⅱ Ford the Engineer and Ford the Artist:A Complex Henry Ford 298
Text Ⅲ Is Software Art or Engineering? 307
Unit 10 Epidemics 313
Text Ⅰ Influenza 318
Text Ⅱ The Fear of the Known 332
Text Ⅲ Lethal Gift of Livestock 340
References 350
Listening Materials Websites 352
致谢 355