Earth Hour is taking place this Saturday, 26th March, at 8:30pm local time. It’s a global event that sees communities, businesses and iconic buildings switch off all of their lights for an hour, making a statement to the world’s governments for more urgent and effective action on climate change.

We’re working with WWF again this year to get online communities talking about Earth Hour, encouraging others to sign-up or ‘Like’ the Facebook Page to show their support and send a clear message that climate change needs to be addressed.

Last year, hundreds of millions of people across a record 128 different countries and territories took part, and this year the WWF have set their sights even higher. Topping last year’s awesome results will be no mean feat; but with enough support, we’re confident it’s one we can achieve.

So, if you have a blog, a Twitter account or are on Facebook it would be fantastic if you could write a post, share a tweet or donate a status update about Earth Hour. Even better, ask your readers, friends, families and colleagues to get involved as well.

If you’re keen to do more, then WWF have come up with a number of online resources to help you spread the word, including:

• An embeddable YouTube video for your blog
• A new and improved Earth Hour UK & Ireland county signup challenge which pits county against county to see which part of the British Isles has the most people signed up to Earth Hour 2011
• The now famous Earth Hour light switch widget to embed on your blog:

As if that lot wasn’t enough there are a load more ways to share content and help show your support.

Earth Hour is, at heart, a collective effort and every contribution really is vital (even re-tweeting this post), so please join in and show your support.

The more signups and ‘Likes’ we get, the more we can demonstrate to governments around the world the strength of our shared voice on this urgent matter.