On March 29 this year, more than 50 million people around the globe united for one hour and switched off their lights to show that they care about our living planet.

EARTH HOUR 2009 - SATURDAY 28 MARCH 2009 8:30 PM

On March 28, at 8:30 pm local time, one billion people will go dark for Earth Hour. World Wildlife Fund is asking individuals, businesses, governments and organizations around the world to turn off their lights to make a global statement of concern about climate change and to demonstrate commitment to finding solutions.

Already hundreds of icons and landmarks around the world have signed up to turn their lights off for Earth Hour 2009 including - the Eiffel Tower in Paris, Sydney Opera House, Acropolis and Parthenon in Athens and The London Eye, among many others.

Earth Hour goes global 

Where it all began

It started with a question: How can we inspire people to take action on climate change?

The answer: Ask the people of Sydney to turn off their lights for one hour.

On 31 March 2007, 2.2 million people and 2,100 Sydney businesses turned off their lights for one hour - Earth Hour. If the greenhouse reduction achieved in the Sydney CBD during Earth Hour was sustained for a year, it would be equivalent to taking 48,616 cars off the road for a year. 

"Special Thanks to Earth Hour"

The Index