epa01421982 A man carries his wife next to the waterfall of the aquarium at the International Exposition of Zaragoza about water in Zaragoza, Spainm, 23 July 2008. Zaragoza has experienced a high rise in temperature. (EPA/Jorge Zapata)
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epa01387544 Visitors pass inside Poland's pavilion at the 'Expo Zaragoza 2008: Water and Sustainable Development' in Zaragoza, Spain, 18 June 2008. (EPA/Jorge Zapata)
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Visitors walk in the Pavilion of Catalunya during of the Expo 2008 international fair in the northern city of Zaragoza, Spain, on Saturday, June 14, 2008. (AP Photo/Manu Fernandez)
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epa01471787 People visit the Expo Zaragoza'08 in Zaragoza, Spain, 30 August 2008. According to local media reports, at least 90.000 people have visited the Expo on 30 August. (EPA/Jorge Zapata)
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epa01415426 Actors perform during a show inside South Korea's Pavilion at the 'Expo Zaragoza 2008 Water and Sustainable Development' on the occasion of Korea's Day in Zaragoza, Spain, 16 July 2008. (EPA/Javier Cebollada)
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Visitors of Pavilion of Japan observe a spectacle of water during the Expo 2008 international fair in the northern city of Zaragoza, Spain, on Saturday, June 14, 2008. (AP Photo/Manu Fernandez)
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epa01427375 Two Saudi Arabian men wait for the arrival of the Saudi ambassador in Spain, Prince Saud Bin Naif Bin Abdulaziz Al Saud (unseen), at Saudi Arabia's pavilion at the 'Expo Zaragoza 2008 Water and Sustainable Development' on occasion of Saudi Arabia's Day, in Zaragoza, Spain, 30 July 2008. (EPA/Jorge Zapata)
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epa01400620 General view of the Philippines Pavillion of the 2008 Zaragoza Exhibition on the Philippines Day, 30 June 2008, in Zaragoza, Spain. (EPA/Jorge Zapata)
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An unidentified boy reacts as fish swim towards him in the International Expo 2008 in Zaragoza, Spain, Thursday June 19, 2008, that has the theme of the world's water woes. (AP Photo/Juavier Cebollada)
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epa01376118 A view of the Swiss pavilion at the Expo 2008 in Zaragoza, Spain, 10 June 2006. The International Exhibition Expo Zaragoza 2008 on 'Water and sustainable development' will run from 14 June to 14 September 2008. (EPA/Jorge Zapata)
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epa01387373 Two girls pose for the media between two huge wellingtons at France's pavilion in the 'Expo Zaragoza 2008: Water and Sustainable Development' in Zaragoza, Spain, 18 June 2008. EPA/Jorge Zapata)
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epa01421987 A young man has a bath in one of the fountains at the International Exposition of Zaragoza about water in Zaragoza, Spain, 23 July 2008. Zaragoza experienced a high rise in temperatures. (EPA/Jorge Zapata)
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