| Lesson 1 A Big Mystery: Why Do We Laugh? Lesson 2 America on Wheels Lesson 3 A Warmer or a Colder Earth? Lesson 4 Bill Gates——Microsoft chairman and chief software architect Lesson 5 Cancer Causes Founded in Lifestyle Lesson 6 Cars Drive Themselves Lesson 7 Clone: The Road to Dolly, and the Path Ahead Lesson 8 Coca-Cola, Chocolate Chip Cookies, and Yellow Sticky Notes Lesson 9 Gene Map Brings Hope Lesson 10 How Nature Breaks Rocks Lesson 11 Inside the World of Dreams Lesson 12 Internal Combustion Engines Lesson 13 Is a Cure for Cancer on the Horizon? Lesson 14 Jupiter and the Outer Planets Lesson 15 Man's Abilities Lesson 16 Mending Faces Lesson 17 Move the Earth--It's No Science Fiction Lesson 18 Neil Alden Armstrong Lesson 19 Science Hero: Philo Taylor Farnsworth Lesson 20 Smart Phones to Emerge Lesson 21 The Migration of Birds Lesson 22 The Pleasure of Books Lesson 23 The Ultimate Machine: The Electronic Computer Lesson 24 Time and the Stars Lesson 25 Why Do We Blink? Lesson 26 Why Is There No Cure for the Cold? Lesson 27 YAHOO !——The history of Yahoo! --how it all started. Lesson 28 Yuri Alekseyevich Gagarin Keys to the Exercises |
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