Earth hour started in 2007 in Sydney and has grown to a global event as a symbol of hope and a movement for change. Last year was the largest voluntary action reaching 1.8 BILLION people in 135 different countries and territories.
You can be involved to! All you have to do is turn out your lights for 1 hour starting at 8:30p.m. and if you feel like doing more you can create your own challenges or help others here.