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Sydney first major city to mark Earth Hour 2009

(Agencies)
Updated: 2009-03-28 22:04

SYDNEY -- The floodlit cream shells of the famed Opera House dimmed Saturday as Sydney became the world's first major city to plunge itself into darkness for the second worldwide Earth Hour, a global campaign to highlight the threat of climate change.

A combination picture shows the Sydney skyline before (top) and after the lights were turned off for Earth Hour March 28, 2009. [Agencies]

From the Great Pyramids to the Acropolis, the London Eye to the Las Vegas strip, nearly 4,000 cities and towns in 88 countries planned to join in the World Wildlife Fund-sponsored event, a time zone-by-time zone plan to dim nonessential lights between 8:30 p.m. and 9:30 p.m.

Related readings:  Skyscrapers, malls and homes to 'switch off' for Earth Hour  Lights to go off around world for Earth Hour  Holding a candle to Earth Hour  Cities go dark for Earth Hour

Involvement in the effort has exploded since last year's Earth Hour, which drew participation from 400 cities after Sydney held a solo event in 2007. Interest has spiked ahead of planned negotiations on a new global warming treaty in Copenhagen, Denmark, this December. The last global accord, the Kyoto Protocol, is set to expire in 2012.

Despite the boost in interest from the Copenhagen negotiations, organizers initially worried enthusiasm for this year's event would wane with the world's attention focused largely on the global economic crisis, Earth Hour executive director Andy Ridley said. Strangely enough, he said, it's seemed to have the opposite effect.

"Earth Hour has always been a positive campaign; it's always around street parties, not street protests, it's the idea of hope not despair. And I think that's something that's been incredibly important this year because there is so much despair around," he said. "On the other side of it, there's savings in cutting your power usage and being more sustainable and more efficient."

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