Get involved
Sign up now to join in the next WWF's Earth Hour lights-out, 8.30pm on 26 March, 2011.
Sign up now to join in!
The next Earth Hour lights-out is quite a few months away, but you can still sign up now to join in next March!
Sign up now to join in
Join the Earth Hour sign-up challenge!
Whether you’re in Kent or Cumbria, Lancashire or Lanarkshire, Antrim or Anglesey… see how your part of the UK measures up on our interactive 3D sign-up map. And find out how many more sign-ups it takes to top our chart in the exciting run-up to Earth Hour!
Join in the challenge!
Tell your community
Your support is really essential to Earth Hour, and you can play a huge part in spreading the word, simply by writing an email or letter to your local newspaper.
Share your Earth Hour moments
Inspire the world about WWF's Earth Hour with your light writing, photos and videos.
Uploading is simple!
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Know others who can help?
Encourage your local authority, schools and businesses to support WWF’s Earth Hour.