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The Rockefeller Center Christmas Tree is lit during the 80th annual tree lighting ceremony at Rockefeller Center in New York, Wednesday, Nov. 28, 2012. (AP Photo/Kathy Willens)

The Rockefeller Center Christmas Tree is lit during the 80th annual tree lighting ceremony at Rockefeller Center in New York, Wednesday, Nov. 28, 2012. (AP Photo/Kathy Willens)

Christmas trees light up around the world

December 17, 2012

Cities around the world turn on their Christmas

trees lights.