earth hour 2011:its not just switching lite off for 1 hour once a year

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in face book i just came across with the event which is a to aware people about the climatic change in world ...its goes like this ............earth hour has done a lot to raise awareness of climate change issue..bt there's more to it than switching off light for one hour once a year...its all about giving people voice on the future of our planet and working together to create a sustainable low carbon future for our planet date: saturday march 26 time: 8:30 pm t0 9:30 pm location : throughout the globe