This year on March 26 at 8:30 pm millions of people, businesses, city landmarks, and buildings will turn out their lights in support of Earth Hour. I've been doing this for a few years now and every year it's really fun. In addition to turning off all lights I also unplug things like power strips, clocks, dvd players- anything that still has a light on when it is turned off.
Even though it is great that more and more people are participating in Earth Hour, the question has been asked, how much of a difference does it really make? The conclusion was that Earth Hour could be doing more. So now in addition to turning off the lights for an hour people can pledge to do other environmental actions.