The cheapest and fastest way to cut global warming pollution is to make things that use electricity -- like appliances, industrial equipment and buildings -- more energy-efficient. We know this works -- most of us have bought an Energy Star appliance or two, and have seen firsthand how much money and energy they can save. But there's still much room for improvement, and we must continue to push for products that waste less energy. Likewise, "green building" design and construction can dramatically reduce the enormous amounts of energy that buildings consume in heating, cooling, lighting and water use. It Can Be Done: » Efficient Appliances Save Energy -- and Money » Building Green: From Principle to Practice » How to Reduce Your Energy Consumption Step 2: Better Cars & Smart Growth.