So for one hour tomorrow night @ 8:30 (your time zone), they are trying to get people to save on energy consumption.  When you think about locally in your own house, by turning off your lights, or reducing your heat by a few degrees, you don't realize the impact as great, becuase you are only reducing by a small amount. But once you take it to the next level, and look at it on a global scale, for one full hour, if people around the world actually follow through, the amount of natural resources saved just during that time, would/should be incredible.   A saying we use at work that I think fits here 'The inches are all around us'.  It is the small steps, small increments that begin to take shape and forge a change in the way we view how we affect everything around us.  Take the time to cut back some. 

Earth Hour: Save a watt, and maybe the Earth

http://news.cnet.com/8301-11128_3-10206051-54.html?tag=newsEditorsPicksArea.0