The official announcement came a week or two ago but Dubai was awarded the Expo 2020. The city "announced" its win but setting off fireworks from the tallest building in the world, it was really pretty cool.
I was out to dinner with a bunch of friends and we all started cheering and clapping and turned around to tell the table behind us - they are just stared at us like we were from space. Oh well, we were excited. This is a great opportunity for the city and our students are especially excited as it means more job opportunity for them. (It probably also means that rents will rise but you have to take the good with the bad.)
The most recent Expo (or World's Fair) was held in Shanghai in 2010 and the next one (every 5 years) will be in Milan in 2015. You may know that the Eiffel tower was built for the 1889 World's Fair, with the intention of tearing it down after the fair. Let's hope Dubai does something just as memorable!