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.
Click here http://www.earthhour.org/ to be part of the global lights out.