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About WWF’s Earth Hour

Switch off and support WWF’s Earth Hour

On 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.

Sign up to support people and wildlife threatened by climate change. Watch the WWF-UK video below to find out more...

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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 hopes to be even bigger and better in 2010.

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Get involved!
Sign up, switch off and spread the word.

You can register as an individual, organisation, school or business. And once registered, you will receive information on what you can do to become more involved in WWF’s Earth Hour, including useful resources and tips.

Be creative in the dark!
As well as switching off your lights, there are many ways you can get involved. Why not arrange an acoustic gig, host a candlelit dinner party, organise a movie night or get your local to put on a pub quiz in the dark.

Or, if you have a camera, you could produce some 'light graffiti' to promote your event. Send us your messages written in light.

Share your ideas
You can tell your friends, and inspire the world with your Earth Hour photos and videos. There are Earth Hour communities on the main social sites on the web: Flickr, YouTube, Facebook,Twitter.

Watch this short film to find out more about WWF’s Earth Hour origins.

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Countdown to Earth Hour


Earth hour 2010

Elsewhere in the UK

Useful links