Earth Hour is an annual international event started by the World Wildlife Fund ... Sydney Harbour Bridge and Opera House were darkened during Earth Hour 2007. ...
Information about Earth Hour 2007: On 31 March 2007, more than 2 million Sydney businesses and households turned off their lights for one hour, Earth Hour, creating a powerful global message that it's possible to take action on climate change.
Earth Hour ... to raise awareness of a worldwide energy conservation effort called Earth Hour. ... strongly support the Earth Hour campaign, and have darkened ...
'Earth Hour' founder Andy Ridley said 371 cities, towns or local governments from ... Ridley, who began 'Earth Hour' last year while working with WWF Australia, said ...
