Lesson 1 Napoleon:From Schoolboy to Emperor 2
Lesson 2 Pompeii:Destroyed,Forgotten,and Found 12
Lesson 3 Steve Jobs:A Man with a Vision 21
Lesson 4 Roller Coasters:The Ups and Downs of How They Work 34
Lesson 5 Language:How Children Acquire Theirs 45
Lesson 6 VIDEO Ⅰ:Surviving an Avalanche 56
VIDEO Ⅱ:Tristan da Cunha Oil Spill 60
Lesson 7 Robots:How They Work and Learn to Work 65
Lesson 8 A Tidal Wave:What Is It?Can We Predict It? 77
Lesson 9 Levels of Language:Formal and Informal 88
Lesson 10 Power:The Kinds of Power People Use and Abuse 100
Lesson 11 Asian and African Elephants:Similarities and Differences 114
Lesson 12 VIDEO Ⅰ: People,Plants,and Pollinators 126
VIDEO Ⅱ:Free Soloing with Alex Honnold 131
Lesson 13 Lincoln and Kennedy:Different Times,Similar Destinies 136
Lesson 14 The Titanic and the Costa Concordia:Tragedies at Sea 148
Lesson 15 Dinosaurs:Why They Disappeared 162
Lesson 16 The U.S.Civil War:Why It Happened 174
Lesson 17 Endangered Species:Why Are They Endangered? 188
Lesson 18 VIDEO Ⅰ:The Surma People 202
VIDEO Ⅱ:Cowboys in North America 207