Some people are trying to save energy at home. For example , they are turning off lights and electrical appliances when they are not using them . They are also being careful about the amount of heat and air-conditioning they use. In addition , concerned people are conserving energy on the road. For instance, they are buying smaller, more fuel-efficient cars. Others are using public transportation or carpooling to save gas. Conserving energy at home and on the road are good ways to help the planet and save money.