Sydney Morning Herald: DOES Earth Hour really work? It depends how you define "work", say organisers, who are honest about the event’s symbolic role in the face of a degree of public apathy and scepticism. When the plan for Earth Hour was hatched in World Wide Fund for Nature’s Sydney office just under two years ago, no one expected it to spread to 35 countries and be embraced by millions of people who want to play their part in fighting climate change. But there have also been waves of …