Earth Hour started in 2007 in Sydney, Australia with 2.2 million homes and businesses turning their lights off for one whole hour. Only a year later and this event had become a global sustainability movement with up to 100 million people across 35 countries participating. Global landmarks such as the Golden Gate Bridge in San Francisco, Rome’s Colosseum and the Coca Cola billboard in Times...

Earth Hour started in 2007 in Sydney, Australia with 2.2 million homes and businesses turning their lights off for one whole hour. Only a year later and this event had become a global sustainability movement with up to 100 million people across 35 countries participating. Global landmarks such as the Golden Gate Bridge in San Francisco, Rome’s Colosseum and the Coca Cola billboard in Times...