Acknowledgments & Disclaimer Author: Elspeth Pierson

Photo Credits in order of appearance: Arco Images/Alamy, Tracy Morgan/Dorling Kindersley (2), Dave King/Dorling Kindersley, P. Wegner/Peter Arnold, Inc., Brand X Pictures/Punchstock, Ron Kimball/Ron Kimball Stock, Robert Dowling/Corbis, GK Hart/Vikki Hart/Photodisc/Punchstock, Dave King/Dorling Kindersley/Getty Images, Tetra Images/Jupiter Images, Dave King/Dorling Kindersley/Getty Images, Dag Sundberg/The Image Bank/Getty Images, Kuzma/Shutterstock, Dave King/Dorling Kindersley/Getty Images, DLILLC/Corbis, Dave King/Dorling Kindersley/Getty Images (3), Mark Raycroft/Minden Pictures, Tad Denson/Shutterstock, Dave King/Dorling Kindersley/Getty Images (2), Tracy Morgan/Dorling Kindersley/Getty Images, Gary Garnick/Workbook Stock/Jupiter Images, Dave King/Dorling Kindersley/Getty Images, Eric Isselée/ShutterStock, GK Hart/Vikki Hart/Photodisc/Punchstock, Dave King/Dorling Kindersley/Getty Images (2), Tracy Morgan/Dorling Kindersley/Getty Images, Erik Lam/Shutterstock, Studio Paggy/IZA Stock/Getty Images, Dave King/Dorling Kindersley/Getty Images, MIXA/Getty Images, Yann Arthus-Bertrand/Corbis, Dave King/Dorling Kindersley/Getty Images, Frenc Szelepcsenyi/Shutterstock, Ken Hurst/Shutterstock, Eric Isselée/Shutterstock, Yann Arthus-Bertrand/Corbis, Robert Dowling/Corbis, GK Hart/Vikki Hart/Photodisc Red/Getty Images, Mike Watson Images/Corbis, GK Hart/Vikki Hart/Photodisc Red/Getty Images, Dave King/Dorling Kindersley/Getty Images, Creatas Images /Jupiter Images, Pam Francis/Photographer’s Choice/Getty Images, Yann Arthus-Bertrand/Corbis, GK Hart/Vikki Hart/Photodisc/Punchstock, Dave King/Dorling Kindersley/Getty Images (2), Karen M. Romanko/Index Stock, Lew Robertson/Corbis, Patrick McCall/Shutterstock.

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