The world needs a new source of energy, an unspillable source.

How do I convince office people to conserve electricity?

I work in a real estate office where, for some reason, they insist on leaving all the lights on. Even in offices that are empty. It drives me crazy, because it wastes a lot of electricity in a part of the country that we don’t have a lot. Any ideas why they might feel the need for this? My theory is that they want it to look like there are more agents working here (a lot have quit with the housing slump). I feel, however, that clients would be better served by lowering overhead costs than by having a feeling that there are a lot of agents in the office. Any suggestions on how to get them to agree that turning out the lights is the smart, responsible thing to do?