With a little effort, and not much money, most of us could reduce our energy consumption by 25 percent or more -- doing the Earth a favor while helping our pocketbooks. What's holding you back? Thermographic photography offer clues to where energy is being wasted. Red and yellow patches indicate escaping heat, while new double pane windows appear cool blue. By sealing in warmth, the windows cut heating costs, which can amount to half a families energy bill.