EARTH HOUR is an international event that asks households and businesses to turn off their lights and non-essential electrical appliances for one hour on the evening of 29 March at 8 pm local time until 9 pm to promote electricity conservation and thus lower carbon emissions. It is promoted by World Wide Fund for Nature Australia (WWF), an environmental lobby group, and the Sydney Morning Herald. The first Earth Hour was held in Sydney, Australia between 7:30 pm and 8:30 pm on 31 March 2007. The 2007 Earth Hour is estimated to have cut Sydney's mains electricity consumption by between 2.1% and 10.2% for that hour, with as many as 2.2 million people taking part. A second Earth Hour, in 2008, is planned to be an international event held in Sydney, many partner cities, and individuals around the world participating.
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