COUVERTURE : Zarya Maxim Alexandrovich/shutterstock.com
4e de COUV : Zarya Maxim Alexandrovich/shutterstock.com
Page 3 : Zarya Maxim Alexandrovich/shutterstock.com
Pages 4-5 : Sebastian Derungs/AFP/Getty Images, Martin Harvey/Corbis, Philippe Huguen/AFP, Natchapon L./shutterstock.com, Monkey Business Images/shutterstock.com, Karen Kasmauski/Corbis, NASA/Science Photo Library, Riou/Corbis, Jason Lee/Reuters, Sam Rosewarne/Newspix/Rex Features, Cynde Moya, Digital Vision/Getty Images, Roderick Eime, Valdrin Xhemaj/epa/Corbis, Philippe Huguen/AFP, KPA/Zuma/Rex Features, Jeff J. Mitchell/Reuters/Corbis
Pages 6-7 : Sebastian Derungs/AFP/Getty Images, Hal_P/shutterstock.com, Pascal Parrot/Sygma/Corbis, Ezra Shaw/Getty Images, John T. Takai/shutterstock.com, Bettmann/Corbis, Barcroft Images/Abaca
Pages 8-9 : Bryan & Cherry Alexander/Nature Picture Library, hoboton/shutterstock.com, Mark Edwards/Photolibrary, Wave RF/Photolibrary, Anna Kaminska/shutterstock.com, Martin Harvey/Corbis
Pages 10-11 : Michael Coghlan, traveler1116/istockphoto.com, Philippe Huguen/AFP, Michael D. Brown/shutterstock.com, LenGreen/shutterstock.com, dimitris_k/shutterstock.com, Gunnar Pippel/shutterstock.com, nuttakit/shutterstock.com, Bettmann/Corbis, Roman Sigaev/shutterstock.com, DiverS-photo/shutterstock.com, The Art Gallery Collection/Alamy, Marilyn Volan/shutterstock.com, Petr Vaclavek/shutterstock.com, Ambrophoto/shutterstock.com, Toponium/shutterstock.com, Newspix/Rex Features
Pages 12-13…