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. (Source: Wikipedia)
Check the pictures below to view this initiative in action. The first photo will show one place with the lights on, the next will portray the same venue, but after joining WWF’s campaign. There is also a nice 2012 video below.
Remember to join next year’s Earth Hour on March 30, 2013. View more info here.
Click the big photo to view as slideshow: