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History of Earth Hour
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Earth Hour concept is born
WWF Australia and Advertising company Leo Burnett Sydney realise the need for a climate change awareness campaign and come up with the name"Earth Hour." Photo by Christian Haugen -
First Earth Hour
The inaugural Earth Hour takes place in Sydney. 2.2 million Sydneysiders are involved, and 2,100 businesses take part. Photo of Sydney city during Earth Hour, by madradish -
Earth Hour goes global
The second Earth Hour takes place in more than 35 countries. It is estimated that 50 million individuals were involved. Photo of Chicago city during and before Earth Hour, photo by Dane Brian -
Third Earth Hour
88 countries were on board, with more than 4,000 cities and towns switching off lights for the hour. Photo of an unusually dark New York City, by darklag2 -
Fourth Earth Hour
More records are broken. 128 countries are involved, and Earth Hour is recognised as a global action to stand up against climate change. Photo of Eartern Freeway and Melbourne skyline, by Takver -
Earth Hour: Go Beyond the Hour
This Saturday at 8.30 pm more than 130 countries will take part in the fifth Earth Hour. The Earth Hour Awards will also take place, as a way to encourage "Going Beyond the Hour." Photo of an international poster for Earth Hour, by Tara_angkor