It is a wonderful world we live in. For thousands of years the Earth has given support to all forms of life – human beings, animals, birds, fishes, insects and plants. But now human beings are killing our planet. Many species of animals and birds have disappeared.  Besides, every year people cut down more trees, build more roads, and use more land for farming. This leaves fewer jungles, fields and forests for wildlife. The country air, once clean and fresh, now may be polluted by power stations and factories. All over the words the forests are disappearing. People cut the trees down because they need wood and paper or new places for farms and houses. Forests the size of Belgium are destroyed every year. It’s an international disaster.There is a lot of litter on the beaches. Some of it was left by people and some was brought by the water. Pollution is very dangerous for people, wildlife and the environment. We live among litter and wastes which we have created ourselves – fumes of cars, throwaway packaging, etc.These are some of the world’s most serious environmental problems. And it’s no good pretending they don’t exist – they do. What’s more, they are getting worse all the time! What will happen if we don’t try to solve these problems? Scientists have made predictions and they are alarming.