The president of an air line was showing a reporter how to run a green airline.He started in the front offices.. He flipped on the lights of the new building,here how we save on lights,there were one light fixture.He said this is how you save,you only install the minimum,with sky light. Every one takes there own trash to dumpster at the end of day. And other do it your self things,a sign do,don't do or out the door. That was his personal office.The same air line has passengers do the same,take care of minimal things and pay for minimal things,in exchange for minimal fares. Charge for for carry ons.Doing by example.Your opinnion.Build without the extras to do or turn off.