Earth hour started in Sydney in 2007 and since then has become a global initiative. The idea is that everyone around the world will turn their electricity off for 60 minutes at a particular time and date, in order to bring attention to the way we are destroying our earth. The last two years I have supported it and we have turned our lights off for that hour. This year I hadn't heard anything about it and then last night I suddenly got an email. I popped off to the website to discover that it is this Saturday night at 8:30pm, so I have signed up again. I will be switching off, are you?