On the 27th of march, we celebrated Earth Hour at 8.30pm till 9.30pm. Earth Hour is a global event organized by WWF (World Wide Fund for Nature orWorld Wildlife Fund). We need to turn off our non-essential lights and other electrical appliances for one hour to raise awareness towards the need to take action on climate change. Earth Hour started in 2007 in Sydney, Australia. Click here to go to Wikipedia’s post on Earth Hour. Click here to view some of the Earth Hour Photos from Yahoo!