People Going Lights Out Worldwide Tonight for Earth Hour
Sure, you've heard of Earth Day, but have you heard of Earth Hour? No, it isn't just a more abbreviated time of environmental remembrance for those with particularly busy schedules. It's a global event organized by the World Wildlife Fund and hosted annually on the last Saturday of every March -- that just happens to be tonight.
The event started in 2007, when 2.2 million Sydney, Australia ...








