Nowadays, the environment problem is more and more serious. One of the most worrying is sources of energy. Therefore, the easiest way is to save electricity at home. People use electricity more efficinetly. We also reduce our electricity bills, turn off all the lights before going to bed. Besides, we use low energy light bulbs or use public transportation. Otherwise , we increase the tax on petrol, avoid using cars or motorbikes for short trips. Especially, we should reduce the use of fossil fuels. Sources of energy will be exhausted so we should infrom for people to economic energy