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Earth Hour celebrated around the world

Updated: 2014-03-30 16:44 (Xinhua)
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Earth Hour celebrated around the world

Pakistani girls hold candles during a ceremony to mark the Earth Hour 2014 campaign in southern Pakistani port city of Karachi on March 29, 2014. Earth Hour is a global event organized by the WWF and is held on the last Saturday of March annually, encouraging households and businesses to turn off their lights and other electrical appliances for one hour to voice their concern about climate change.[Photo/Xinhua]

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