Chapter 01 The World of Books Unit 1 Adventures on the Mussissippi Unit 2 The Travwls of Swift's Satire Chapter 02 The World Around Us Unit 3 Come Rain or Come Shine Unit 4 Breaking Plates Can Break Plates Chapter 03 The World of Our Bodies Unit 5 How the Red River Flow Unit 6 Study Suggests Sitiing Less Can Extend Life Chapter 04 The World of Language Unit 7 Looking at Babies Learning to Speak Unit 8 The Big Deal About Small Talk Chapter 05 The World of the Past Unit 9 The Rise and Fall of the Mongol Empire Unit 10 The Spanish Comquest of Mexico Chapter 06 The World of Technology Unit 11 Internet Fundraising Helps Farmers Flourish Unit 12 How Technology Shook Up the Music Industry Chapter 07 The World of Science Unit 13 A Closer Loot at Acids Unit 14 Sources and Uses of Fluorine Chapter 08 The World of Medicine Unit 15 To Vaccinate or Not to Vaccinate? Unit 16 Herbal Medicine: Past and Present Chapter 09 The World of Art Unit 17 Piecing Topether the History of Mosaics Unit 18 The Making of Beautiful Batiks Chapter 10 The World We Live In Unit 19 Standing Up for Animal Rights Unit 20 Looking at Healthcare Systems Chapter 11 The World of Business Unit 21 One Woman's Makeover of the Cosmetics Industry Unit 22 Richard Branson and the Virgin Brand Chapter 12 The World of Psychology Unit 23 Trends in Examining the Mind Unit 24 Remember This