Photo Credits

p. i © Nicole Kwiatkowski / Shutterstock.com; p. ii © Heracles Kritikos / Shutterstock.com; p. iii © Aerial-motion; p. iv © Igor Tichonow; p. v, top © Nick Pavlakis / Shutterstock.com; p. v, bottom © SIAATH / Shutterstock.com; p. vi, left © Karl Allen Lugmayer / Shutterstock.com; p. vi, right © Gelia / Shutterstock.com; p. vi, bottom © Alexandros Michailidis / Shutterstock.com; p. vii, top © Borka Kiss; p. vii, middle © Jean-Pierre Dalbéra; p. vii, bottom © Milan Gonda / Shutterstock.com; p. viii, left © Mapics; p. viii, right © villorejo / Shutterstock.com; p. viii, bottom © Feel good studio; p. ix, top © Chantal de Bruijne / Shutterstock.com; p. ix, middle © Kartouchken / Shutterstock.com; p. ix, bottom © Helmut Corneli / Alamy Stock Photo; p. x, top © prochasson frederic / Shutterstock.com; p. x, left © Grantibo / Shutterstock.com; p. x, right © Kartouchken / Shutterstock.com; p. xi, top © ian woolcock / Shutterstock.com; p. xi, middle © wjarek / Shutterstock.com; p. xi, bottom © Freesurf69 | Dreamstime.com; p. xii, top © Mila Atkovska; p. xii, middle © Fritz Hiersche | Dreamstime.com; p. xii, bottom © Patryk Kosmider | Dreamstime.com; p. xiii, left © T photography / Shutterstock.com; p. xiii, right © Dziewul / Shutterstock.com; p. xiii, bottom © Tupungato | Dreamstime.com; p. xiv, top © BLESKY; p. xiv, left © Burnel1 | Dreamstime.com; p. xiv, right © aniad / Shutterstock.com; p. xv, top © Copula; p. xv, middle © Nejdet Duzen / Shutterstock.com; p. xv, bottom © Pawel Kazmierczak; p. xvi, left © Jekatarinka / Shutterstock.com; p. xvi, right © Ververidis Vasilis / Shutterstock.com; p. xvi, bottom © John_Walker.