Many people make the mistake of thinking that Expos are one-off events that nations host at random every five years or so. There’s a logic, however, to World Expos - and the source of that logic is the BIE, the Bureau International des Expositions. His Excellency Dimitri Kerkentzes, Secretary-General of the BIE, explains the BIE’s role in organising World Expos, and what goes into making each World Expo different from the last. This podcast is by Expo 2020 Dubai and produced by Kerning Cultures Network.