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Friday, August 29, 2008 |
Friday, August 29, 2008 |
Photo: Earth Hour: Cities, Landmarks to Go DarkThe Australian city was the site of the first Earth Hour in 2007, in which lights on prominent landmarks were turned off to raise awareness about global warming. Photograph by Sam Abell/NGS
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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