WHAT'S IT ABOUT?

WWF’s Earth Hour is a simple idea that’s quickly turned into a global phenomenon. Hundreds of millions of people turning off their lights for one hour, on the same night, all across the planet. It’s about appreciating the brilliant world we all share – and how we need to protect it. Not just for an hour a year, but every day.

8.30pm 31 March

If you want to be part of something huge at 8.30pm on 31 March, just sign up now to say you’ll join the hundreds of millions switching off for a brighter future.

However you plan to spend the hour, make sure you’ve told as many people as possible. Because a healthy planet isn’t just good for polar bears or tropical tree frogs. It’s essential for us all.