Create a game (for all ages) where you compete to use as few resources as possible, and enlist some popular recognizable faces to help promote it. A few opportunities for a younger person to experience actively reducing resource use will get them thinking and creating on their own. At our house, we play "living at sea on a sailboat", so we think of how much water and electricity we use, and how to make healthy dried food... more »
We should use more public transports to work, home or travel in order to reduce the green house gases emission and fuel consumption. I know it is really hard for the car dependent city - like where I live - Plano, TX, but we should make a start.