Did you know the air pollution is more and more increase today ? Primary cause of it is too much traffic in the city centre, factories polluting the air, and too much rubbish being burned. Firstly, all countries have to face this problem, too much traffic in the city centre. For example New York City and Bangkok. The simple solution is introduce park and ride scheme. When you have more ride scheme, more cyclist too. So, in the city centre has a number of car less. Second, factories polluting the air. The guide is create industrial park, it'll reduce air pollution in the city. Industrial estate have to build away from the city because it makes health problems for people. Finally, too much rubbish being burned. Rubbish burning produce various compounds toxic to the environment including nitrogen oxide, VOCs, carbon monoxide, and particle pollution. In conclusion, there are many ways to decrease air pollution. We all need to do whatever we can. As Malcolm Bradbury said "If you're not part of the solution, you're part of the problem.