Dubai reveals plans for new 'supertall' skyscraper

Across Dubai myriad construction projects are underway in the lead up to World Expo 2020. But it turns out there's always room for one more. State-owned investment firm Dubai Holding has released details of a huge post-expo construction mega-project, which will include a 1,804 feet (550-meter) high tower -- taller than One World Trade Center in New York.

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