More than 2,800 cities and towns from 84 countries across the globe are committed to participating in Earth Hour 2009. Participating is literally as simple as flipping a switch--a light switch, to be exact.
At 8:30 p.m. local time, just turn off your lights and shut down any other electronics you can for one hour.
The World Wildlife Fund (WWF) began sponsoring Earth Hour to raise awareness about energy consumption's impact on climate change and global warming. The WWF partnered with just one city, Sydney, Australia, for the first Earth Hour in 2007, but last year the lights started going out around the world. More than 400 cities in 35 countries participated in Earth Hour 2008, with an estimated 36 million Americans taking part.
Among the United States cities committed to going dark Saturday night are Atlanta, Chicago, New York, Phoenix and San Francisco. The lights will be going out on Broadway!
Even the "City of Light" -- Paris, France -- has committed to participating in Earth Hour 2009. In addition to the Eiffel Tower, other landmarks going dark include the Sydney Opera House, the Christ the Redeemer statue in Rio de Janeiro, the Empire State Building in New York and Hong Kong's Symphony of Lights.
CLICK HERE for more Earth Hour information.
CLICK HERE to view an Earth Hour video on YouTube.