Earth Hour in Saint Louis050

Earth Hour is a worldwide effort in which people around the world simply switch off their lights for one hour. Earth Hour began in Sydney in 2007, when 2.2 million homes and businesses switched off their lights for one hour.

In 2008, the message grew into a global sustainability movement, with 50 million people switching off their lights. Global landmarks such as the Golden Gate Bridge in San Francisco, Rome's Colosseum, the Sydney Opera House, and the Coca Cola billboard in Times Square all stood in darkness.

The website offers ways that individuals can get involved in the 2010 effort.