4 cities vie to host 2020 world’s fair

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In this Wednesday Nov. 13, 2013 photo, vehicles pass by a tower with a sign that reads, "Keep Calm, No Bubble," at the Marina district in Dubai, United Arab Emirates. The logo for Dubai’s bid to host the Expo 2020 reflects a push by the city’s leaders to avert another financial crisis like the one that brought the city to its knees in 2008. Dubai saw property values slashed by more than half and the city’s government needed a $10 billion bailout from oil-rich neighbor Abu Dhabi in 2009. (AP Photo/Kamran Jebreili)PARIS (AP) — City boosters from Brazil, United Arab Emirates, Russia and Turkey are gathering in Paris on Wednesday to find out who will host the 2020 World Expo.