Unit 1 Spart and Fitness Unit 2 Skin Deep Unit 3 Animals in Danger Review 1 Part One Vocabulary Part Two The Lost World Part Three Biodiversity Unit 4 Violent Earth Unit 5 Islands and Beaches Unit 6 Ancient Mysteries Review 2 Part One Vocabulary Part Two The Serengeti Part Three Earth in Motion Unit 7 Global Addictions Unit 8 Legendary Voyages Unit 9 Stories of Survival Review 3 Part One Vocabulary Part Two The Forbidden City Part Three Energy Unit 10 All in the Mind Unit 11 Art and E.ife Unit 12 Medical Challenges Unit Review 4 Part One Vocabulary Part Two Banks of the Seine Part Three Cultural Heritage