Improving energy efficiency could also help to reduce greenhouse emissions. In fact, according to the environmental group Natural Resources Defense Council, "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."37 Major home appliances such as refrigerators, clothes washers, and dishwashers account for a large portion of people's monthly utility bills, and replacing them with new models— especially energy-efficient ones with a government Energy Star label—can dramatically reduce the amount of electricity consumers use. Using energy-efficient and environmentally friendly, or "green," techniques to build homes and commercial buildings is an-
other important objective. Some experts say that retrofitting older buildings and establishing strong efficiency standards for new construction could cut energy consumption by 40 to 50 percent. The U.S. Green Building Council, a U.S. nonprofit coalition of building industry leaders, has already developed a green building rating system, called Leadership in Energy and Environmental Design—to promote energy-efficient, healthy, and green design and construction practices.
In addition, because gas-burning vehicles create much of the greenhouse gas problem, increasing gas mileage and vehicle efficiency would go a long way toward reducing global warming. Today, under the U.S. Corporate Average Fuel Economy (CAFE) regulations, all new cars must exceed 27.5 miles per gallon, and light trucks must exceed 20.7 miles per gallon. Legislators, however, are pushing to increase CAFE standards to at least 35 miles per gallon. Some policy makers are also interested in regulating emissions from air travel, because aviation is the world's fastest- growing source of greenhouse gases and a major contributor to global warming.
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Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.