Earth Hour 2009 is an opportunity for hundreds of millions of people all around the world to switch off their lights as a demonstration, a symbolic action to show to governments we need you to take action on climate change.
Earth Hour 2009 is an opportunity for hundreds of millions of people all around the world to switch off their lights as a demonstration, a symbolic action to show to governments we need you to take action on climate change.
The WWF said it expected one billion people from 90 countries to take part.
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Reuters
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