Energy conservation a Penny Saved Is a penny earned The oil not taken from the earth One less barrel of oil is used to No emissions to foul the environment heat your home You save money in the bargain It is better to save a barrel of oil than to find a new one 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan UniversityEnergy Conservation A Penny Saved Is a Penny Earned One less barrel of oil is used to heat your home The oil not taken from the earth No emissions to foul the environment You save money in the bargain It is better to save a barrel of oil than to find a new one