Cleaning the world’s tallest building | Supersized Earth - BBC

Subscribe and 🔔 to OFFICIAL BBC YouTube 👉 Stream original BBC programmes FIRST on BBC iPlayer 👉 The world’s tallest building, the Burj Khalifa in Dubai, has the world’s highest windows. Dallas joins the team whose heart-stopping job it is to clean them. Supersized Earth traces the spectacular story of how humans have transformed our world in a generation. In this awe-inspiring three-part series, Dallas Campbell travels the globe, visiting the world’s largest a