Earth Hour
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Earth Hour is an event organized by the World Wide Fund for Nature (WWF). It is held on the last Saturday of March every year. The WWF asks people to shut off their lights and appliances for one hour. They want to raise awareness for climate change. It was started in 2007.
Earth Hour Media
Overview of Sydney during Earth Hour 2008
Sydney Harbour Bridge and Sydney Opera House were darkened during Earth Hour 2007.
Azrieli Center in Tel Aviv darkened for Earth Hour 2010.
Colosseum darkened for Earth Hour 2008
The Sky Tower in Auckland, New Zealand, switched off its usual floodlighting during the Earth Hour, and re-lit afterwards. (the red lights in the middle image are aircraft warning lights)
Italy, Verona, Arena with backlight off on square Bra, in the bottom Town Hall during Earth Hour 2013
