Earth Hour is a worldwide movement for the planet planned and started by the WWF as a lights-off event in Sydney, Australia, in 2007. Since then it has grown bigger and bigger.
Earth Hour 2014 is scheduled for Saturday, March 29, from 8:30 p.m. to 9:30 p.m. during participants’ local time. Switch off all lights for one hour and join lots of other people across the globe in doing so. Hey, even the Big Ben/Houses of Parliament went dark last year.
For more information click on this link.