Join individuals around the world in celebrating Earth Hour by turning off lights, appliances and other electronics for at least one hour this Saturday, March 27 at 8:30 p.m. Started by the World Wildlife Fund (WWF), the annual event helps to raise awareness about global warming and demonstrate the collective power of simple, energy-saving actions.

Earth Hour began in Sydney, Australia in 2007, with 2.2 million homes and businesses switching off their lights for one hour. In 2008, participation rose with over 50 million people switching off their lights world-wide, and last year that number sky-rocketted to nearly 1 billion world-wide. Famous landmarks chose to go dark as well including the Golden Gate Bridge, the Empire State Building, the Las Vegas Strip, the Parthenon and Acropolis in Athens, and more.

In the past, some cities have been able to cut electricity demand by 13% during those peak hours. Help your city make an impact by powering down at 8:30 p.m. this Saturday.

• Learn more about Earth Hour 2010
• Access Earth Hour’s toolkits