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06:52 GMT +3 hours23 December 2014
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Earth Hour 2011 in Moscow and other cities

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© RIA Novosti. Iliya Pitalev
More than 4,000 cities from 131 countries and about 750 major landmarks turned off their lights during the global Earth Hour event on March 26.
Over 75 buildings and bridges in Moscow participated in the event.

More than 4,000 cities from 131 countries and about 750 major landmarks turned off their lights during the global Earth Hour event on March 26.