World switches off for Earth Hour 2014
 

https://s2.yimg.com/bt/api/res/1.2/R...073824-895.jpgMEXICO CITY, MEXICO - MARCH 29: General view of atmosphere during the Earth Hour the global movement organized By WWF (World Wide Fund For Nature) on March 29, 2014 in Mexico City, Mexico. (Photo by Victor Chavez/Getty Images for Sony)


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