Earth Hour event held across countries as symbol of commitment to planet
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        HONG KONG - Landmarks around the world went dark on Saturday night to mark this year's Earth Hour, a worldwide movement organized by the World Wildlife Fund. The event is held annually, encouraging individuals, communities, and businesses to turn off non-essential electric lights, for one hour, on the last Saturday of March, as a symbol of commitment to the planet.
 
 
  
     
    






















