pollution All over the world, the plane tickets’ fares are increasing in the last years because of the increasing of the petrol. In fact, ten years ago the ticket plane cost one third less than now. Although most people say that the main reason is to discourage people from travelling by plane. On one hand people who think the main reason is discourage people from travelling by plane explain that if there are a lot of people who travel by plane it will damage the fragile environment and if the fragile environment will be damage the global warming and the climate change will advance non stop faster and faster. Nobody knows really the true about climate change or if it’s just a natural process. On the other hand, plane tickets are a business and like a lot of business is very important to have costumers. Moreover, nowadays many people live far away from their family, there are several immigrants and emigrants in everywhere from America to Europe and from Europe to America. For these people are essential to travel by plane, is the only option to visit their family. However, people can´t afford as much tickets as before. To summarize, prevent the environmental pollution is very important but is also important for people to keep in touch with their family.