The lights are going down from the Great Pyramids to the Acropolis, the Eiffel Tower to the Sears Tower, as more than 2,800 municipalities in 84 countries and regions plan on Saturday to mark the second worldwide Earth Hour.

A playbill designed by a netizen to publicize the knowledge of the Earth Hour. The lights are going down from the Great Pyramids to the Acropolis, the Eiffel Tower to the Sears Tower, as more than 2,800 municipalities in 84 countries and regions plan on Saturday to mark the second worldwide Earth Hour. [Photo from news.163.com]

McDonald's will even soften the yellow glow from some Golden Arches as part of the time zone-by-time zone plan to dim nonessential lights between 8:30 pm and 9:30 pm to highlight global climate change.

"Earth Hour makes a powerful statement that the world is going to solve this problem," said Carter Roberts, chief executive of the World Wildlife Fund, which sponsors Earth Hour. "Everyone is realizing the enormous effect that climate change will have on them."

Seven times more municipalities have signed on since last year's Earth Hour, which drew participation from 400 cities after Sydney, Australia 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.

UN Secretary-General Ban Ki-moon encouraged the convention to reach a fair and effective climate change agreement and promoted Earth Hour participation in a video posted this month on the event's YouTube channel.

But not everyone agrees and at least one counter protest is planned for Saturday.

(China Daily March 28, 2009)