About Earth Hour
Switch off and support WWF’s Earth Hour
Saturday 27 March 2010 at 8.30pm, we want a billion people around the world to switch off their lights for one hour – WWF’s Earth Hour. Show you care about climate change.
All about WWF's Earth Hour
Watch our short film and find out more about WWF's Earth Hour.
About WWF's Earth Hour
Earth hour success in 2009
WWF's Earth Hour 2009 took the world by storm as it travelled east to west and hundreds of millions of people switched off their lights
See the global highlights
We're doing it to tackle climate change
WWF believes there is still time to avoid the worst impacts of climate change. But we need to act now.
Watch our short video about WWF and climate change
What did people do for Earth Hour in 2009?
WWF's Earth Hour was embraced by people in over 3,000 cities and towns, nearly 1,000 landmarks, and more than 83 countries around the world.
See what people did in 2009
Countdown to Earth Hour
Useful links
