For the first time in human history more than half of us live in cities. Vibrant, complex, colossal - what drives their success? Dubai is the fastest-growing city in the world. Its skyline has erupted from the desert in just two decades. In one day in a city where fantasy is made reality, we go on a spending spree with the personal shopper with a $1million budget; meet the Middle East's first female train driver; and discover why camel milk will be the next big health fad. Show less