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Earth Hour is a WWF event and it began in Sydney, Australia in 2007. It was such a huge success that in 2008, WWF decided to make Earth Hour a global event and its been growing ever since.

In 2008, millions of people in hundreds of cities in more than 30 countries turned off their lights for Earth Hour. In 2009, more than 4,000 cities in 88 countries participated!

Why Participate

Climate change is the most urgent environmental issue facing our planet and every one of us has a role to play to help stop it. Earth Hour is an easy and powerful way to send a message that you care about your planet and want to be part of the climate solution. More importantly, it sends a very powerful message to government and world leaders that people want the right policies and regulations put in place that can achieve the meaningful emission reductions necessary to help fight climate change.

WWF's Role

WWF created Earth Hour to help show people how they can be a part of the climate solution and use that participation to show government that people are taking action for the planet and want that same leadership from local and national governments.

Through Earth Hour WWF can mobilize millions of people as a global cry that action is needed now to stop the climate crisis.

As an international conservation organization WWF is uniquely positioned to tackle climate change because we can work with all the necessary players - individuals, business and government - to achieve results.