Earth Hour US - Earth Hour 2008 Created to take a stand against the greatest threat our planet has ever faced, Earth Hour uses the simple action of turning off the lights for one hour to ...Be part of making Earth Hour 2008 a huge, global success by telling your friends and family. Remember, every single light makes a statement and makes a ... In 2008, 24 global cities will participate in Earth Hour at 8pm on March 29. Earth Hour is the highlight of a major campaign to encourage businesses, |