Reported on Yahoo news:
Australia's largest city will be plunged into darknessfor an hour on Saturday in an attempt at a world first blackout toraise awareness of global warming, organisers say.
A successful switch-off could then be copied by major cities around theworld in a drive to reduce the greenhouse gas emissions blamed forclimate change, according to international conservation group WWF.
A thousand businesses have signed up, including many of the topblue-chip companies on the Australian stock market -- and evenMcDonald's is going to turn off its "Golden Arches" signs.
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