Generally, a World Expo lasts six months. But planning for it can take around a decade. And the impact it makes on a city can last for centuries.  How do cities carry the memory of such an enormous event? In the second half of our two-part series about Expo legacies, we’ll get a glimpse of a future Dubai where the Expo site is transformed into District 2020, an all-inclusive, smart city, where 80% of Expo’s built environment will be turned into a global innovation hub. This podcast is by Expo 2020 Dubai and produced by Kerning Cultures Network.