Earth Hour : 29 March at 8PM

Earth Hour is represented by a logotype, as shown , depicting part of the Earth in the shape of the number 60, as in the 60 minutes of an hour. The logotype must always appear on a black background.

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 8PM local time 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 p.m. and 8:30 p.m. 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.

The 2007 Earth Hour was part of a wider awareness campaign that aimed to reduce Sydney's carbon emissions by 5%. 68,506 individuals and 2,270 businesses registered their intention to participate on the Earth Hour website

ORIGIN : Earth Hour, under the working title 'the big flick', was conceived by members of WWF-Australia's communication team in December 2005 as a possible campaign to engage all parts of the Australian community on the need to address climate change.

A partnership was formed in August 2006 between WWF-Australia's Andy Ridley, Leo Burnett's Nigel Marsh and Fairfax Media's Phil McLean with a planned campaign date of early 2007. Earth Hour was launched publicly as a Sydney-only event on December 16 2006 by Sydney Lord Mayor Clover Moore and took place at 7.30pm on March 31 2007.

Following significant interest from both inside Australia and around the world, Earth Hour was formed into a non-profit entity owned by WWF-Australia, Leo Burnett and Fairfax Media. The decision was taken to make Earth Hour an open source model, allowing any genuinely interested individual, company, media or government anywhere in the world to adopt the campaign for 2008.

sign up now : http://www.earthhour.org/sign-up

source : http://www.earthhour.org/