VOTE FOR EARTH - Earth Hour 2009

Earth Hour is a global event organized by WWF (World Wide Fund for Nature, also known as World Wildlife Fund) and is held on the last Saturday of March annually, asking households and businesses to turn off their non-essential lights and other electrical appliances for one hour to raise awareness towards the need to take action on climate change. Earth hour was conceived by WWF and The Sydney Morning Herald in 2007, when 2.2 million residents of Sydney participated by turning off all non-essential lights. Following Sydney's lead, many other cities around the world adopted the event in 2008.
Earth Hour 2009 was from 8:30 p.m. to 9:30 p.m. local time, March 28, 2009. 88 countries and more than 4,000 cities joined Earth Hour 2009.

Updated on 30, March 2009:
Click on the link to view some "Before-and-after Earth Hour 2009"photographs from around the world. http://www.boston.com/bigpicture/2009/03/earth_hour_2009.html. Don't forget to click on the images [From Image #2] to see an animated fade between "on" and "off". This effect requires java script to be enabled.