WWF’s Earth Hour

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March 26, 2009

On Saturday 28 March 2009 at 8.30pm, people, businesses and iconic buildings around the world will switch off their lights for an hour – WWF’s Earth Hour.

We want a billion people around the world to sign up and join in.
Sign up to show that you care about people, wildlife and the planet, and that you want the world’s leaders to take action to tackle climate change.

More than 2,000 cities from 80 countries across the globe have already signed up. In addition, a great number of iconic landmarks will be plunged into darkness, including Nelson’s Column, the Forth Bridge, the Millennium Stadium in Cardiff, the Eiffel Tower, Niagara Falls, Christ the Redeemer in Rio de Janeiro, Table Mountain in Cape Town and Sydney Opera House. The London Eye, too, will be dimmed for the hour. Visit our 'Who’s signed up to switch off' page to find out more.

Please join us, and help us make this the biggest mass participation event ever!

Campaigning for a global deal
This inspiring event will kickstart WWF’s global deal campaign to convince governments to agree effective action on climate change. December's UN climate summit in Copenhagen is their last chance to get it right, so we need to ensure they know we care.

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.

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.