Unit 1 Einstein's Brain 1
Unit 2 Archimedes Palimpsest 10
Unit 3 Oldest Dinosaur Bones 16
Unit 4 Dresden Green Diamond 24
Unit 5 Famous American Bridges 31
Unit 6 Pizza 39
Unit 7 The Washington National Cathedral 45
Unit 8 Drivers'Licenses 52
Unit 9 ENIAC:First Electronic Computer 61
Unit 10 The Aztecs 67
Unit 11 Automated Orchestra 73
Unit 12 Museum of Questionable Devices 82
Unit 13 Immigration:New York 92
Unit 14 Jekyll Island 103
Unit 15 The Invention of Barbed Wire 115
Answers 122