Started last year as an initiative by the World Wildlife Fund in Sydney, Australia, to “take a stand against the greatest threat our planet has ever faced, Earth Hour uses the simple action of turning off the lights for one hour to deliver a powerful message about the need for action on global warming.”
On 31 March 2007, 2.2 million people and 2100 Sydney businesses turned off their lights for one hour – Earth Hour. This massive collective effort reduced Sydney’s energy consumption by 10.2% for one hour, which is the equivalent effect of taking 48,000 cars off the road for one hour.
With Sydney icons like the Harbour Bridge and Opera House turning their lights off, and unique events such as weddings by candlelight, the world took notice. Inspired by the collective effort of millions of Sydneysiders, many major global cities are joining Earth Hour in 2008, turning a symbolic event into a global movement.
This year, they’ve decided to take it global and are urging people to sign up to turn off their lights for one hour at 8PM on March 29, 2008. Over 9,000 people have signed up so far.