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The inside of the Spanish pavilion at the Expo 2008 in Zaragoza on the theme of "Water and Sustainable Development" on June 14, 2008. The expo is hoping to attract 6.5 million visitors and draw the world's attention to one of the great environmental challenges of the 21st century. AFP PHOTO/PHILIPPE DESMAZES (Photo credit should read PHILIPPE DESMAZES/AFP/Getty Images)