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Earth Hour 2013- 8:30-9:30 DO IT
Earth Hour 2012
Edinburgh celebrates Earth Hour
earth hour by ~saltyshadow
Australia Earth Hour 2009 | postage stamp
Sydney and Earth Hour 2012
Britain Earth Hour
The Petronas Twin Towers turned off the lights to mark Earth Hour in Kuala Lumpur
Earth Hour 2010 - South Africa
In 2012, Earth Day Network is asking people all over the globe to pledge one billion “acts of green,” which can include anything from shutting off the lights when you leave the room to riding a bike to work, and more.