Earth Hour 2012

“Earth Hour is a worldwide event organized by the World Wide Fund for Nature (WWF) and held on the last Saturday of March annually, encouraging households and businesses to turn off their non-essential lights for one hour to raise awareness about the need to take action on climate change. The event, conceived by WWF and The Sydney Morning Herald, first took place in 2007, when 2.2 million residents of Sydney participated by turning off all non-essential lights. Following Sydney's lead, many other cities around the world adopted the event in 2008. Earth Hour 2012 took place on 31 March 2012 from 8:30 p.m. to 9:30 p.m., at participants' local time”. – Wikipedia

A volunteer lights one of 5000 blue and green candles in an eight-meter shape of Planet Earth in front of the Brandenburg Gate during Earth Hour 2012 on March 31, 2012 in Berlin, Germany. According to organizers, Earth Hour 2012 has participants including individuals, companies and landmarks in 147 countries and territories and over 5,000 cities agreeing to switch off their lights for one hour. The Brandenburg Gate, the Eiffel Tower in Paris, Big Ben Clock Tower in London, the Christ the Redeemer statue in Rio de Janeiro and the Empire State Building in New York are among the monuments whose operators have agreed to participate in the demonstration. (Photo by Adam Berry/Getty Images)

Badaling Great Wall after turn off the lights during the Earth Hour 2012 power switch off on March 31, 2012 in Beijing, China. About 124 Chinese cities joined a WWF worldwide initiative Earth Hour, to call on people to switch off unnecessary lights for one hour tonight, in support for energy-saving efforts and global warming prevention as a shared responsibility.(Photo by Lintao Zhang/Getty Images)

A candle mural is lit on the forecourt of the Opera House representing WWF and 60+ as the lights are switched off for Earth Hour on March 31, 2012 in Sydney, Australia. Earth Hour encourages individuals around the world to turn off their lights for one hour at 20:30 local time on March 31, 2012 to take a stand against climate change. (Photo by Mark Metcalfe/Getty Images for WWF Australia)

The Eiffel Tower is seen after the lights are turned off during Earth Hour 2012, on March 31, 2012 in Paris, France. (Photo by Antoine Antoniol/Getty Images)

The lights are turned off on The Houses of Parliament in central London, to mark Earth Hour on March 31, 2012 in London, England. (Photo by Dan Kitwood/Getty Images)

The Empire State Building seen in darkness as part of Earth Hour on March 31, 2012 in New York City. (Photo by John Lamparski/Getty Images)

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