"The event that began in one city just three years ago has now grown to be the largest environmental movement in history! In 2009 hundreds of millions of people turned out their lights for one hour to show their support for climate action. Light the way again on March 27, 2010. Earth Hour is more than switching off lights for one hour, once a year. It's about giving people a voice for the future of our planet, and sending a message to our world leaders that we want action on climate change. Take a stand, join the movement."