Image: This combination of two images of the Sydney skyline were photographed at 8:20pm on March 28, 2008 (top) and during earth hour at 8:20pm on March 29, 2008. Thousands of lights that illuminate office buildings, public structures and monuments were switched off Saturday evening, darkening the city's iconic skyline for one hour, in an effort to publicise the effects of climate change. (Tim Wimborne/Reuters)
SYDNEY (AFP) - Tens of millions of people switched off lightbulbs this weekend as part of a global campaign to throw the spotlight on , organisers of the Australian-led 'Earth Hour' initiative said.
Fromto Asia, Europe, Canada and the US, "many tens of millions" of people flicked the switch on Saturday night, plunging cities, towns and homes into darkness, chief of environmental group WWF- Greg Bourne said.
The event, which was first held in Sydney last year, saw the lights dimmed in major cities at 8:00 pm local time, with skyscrapers, public monuments and private homes plunged into darkness.
Bourne said the response from around the world had been astounding.