Earth Hour launched in Sydney in 2007 with backing from the city’s mayor. Inspired by this, San Francisco held "Lights Out" a few moths later. By 2008 there was participation from all continents with many landmark buildings around the world turning off non-essential lighting including the Sydney Opera House and the Empire State Building and participation has continued to increase year on year. In 2009, The United Nations observed Earth Hour at its Headquarters in New York and at other UN facilities around the world including the UN Environment Programme (UNEP) offices in Nairobi, Kenya.
Communications can serve many purposes - such as providing directions, marketing a product or promoting a brand. It is said that every picture is worth a thousand words and they certainly can be powerful emotionally as well as imparting information.
There is a clear aim for leaders this December at Lima. But the reality is that this is a shared challenge. Every person, company, organisation on this planet needs to see this challenge and relate world emissions, to temperature rises and their own potential to contribute to the solution