At 8.30 PM on Saturday 26 March 2011, lights will switch off around the globe for Earth Hour.
This year, when the lights go back on, we want you to think about what you can change in your daily life that will benefit the planet. To share your stories, thoughts and ideas with us and to get inspiration from what others are doing. So tell us what you're going to do and we'll tell the world.
Together our actions add up.
- from Earth Hour site