Earth Hour, 8.30pm Saturday 26 March 2011 - will you be switched off?

From its debut in one city in one country in 2007 – Sydney, Australia – when 2.2 million individuals turned their lights off to take a stand against climate change, Earth Hour has become a truly global movement, embracing 128 countries and territories in 2010.

In four short years, Earth Hour has grown into the largest environmental campaign in history.

2011 marks a new phase for the initiative. The new campaign creative, 60+, will position Earth Hour 2011 as an hour of celebration where the community comes together and makes a pledge to do more to help the planet.

Sign up at earthhour.org.au