History of Earth Hour
2008
Global landmarks such as the Golden Gate Bridge in San Francisco, Rome's Colosseum and the Coca Cola billboard in Times Square, all stood in darkness, as symbols of hope for a cause that grows more urgent by the hour.
2009
Over 4000 cities in 88 countries officially switched-off to pledge their support for the planet, making Earth Hour 2009 the world's largest global climate change initiative.
