From its inception as a single-city initiative — Sydney, Australia - in 2007, Earth Hour has grown into a global symbol of hope and movement for change.

This Earth Hour 2011: Saturday 26 March, 8.30pm celebrate your action for the planet with the people of world, and add more to your Earth Hour.

This is the 60 sec version of the official TVC for Earth Hour 2011. This Earth Hour 2011: 8.30pm, Saturday 26 March, celebrate your action for the planet with the people of world, and add more to your Earth Hour.