About WWF’s Earth Hour
Switch off and support WWF’s Earth Hour
On Saturday 27 March 2010, millions of people around the world switched off their lights for one hour – WWF’s Earth Hour.
Sign up to support people and wildlife threatened by climate change.
Watch the WWF-UK videos below to find out more...
Why WWF cares
Climate change is one of the most serious threats facing people and nature, and demands urgent global action. Unless we prevent average temperatures rising 2°C above pre-industrial levels, we face a high risk of severe and irreversible changes in the planet’s natural systems. Find out more.
Global impact
Watch the video below to see how Earth Hour has grown into a global event and see images of how Earth Hour 2010 became a night to remember!
Get involved!
You can still register as an individual, organisation, school or business.
Watch this short film to find out more about WWF’s Earth Hour origins.
Elsewhere in the UK
