Obviously, you do not need to be that depressive or dark in your analysis of the problem. Do not aggravate the situation. Be objective and reserved. Inform your reader. Emphasize the need to solve the problem of environmental pollution quickly. Speak about future generations. How will they live in an environment full of industrial and health threats? What do you think you and other society members should do to create a more favorable and friendlier environment for your children? Do you think that the laws which obligate factories to reduce air pollution are effective? Do you think that the key polluters must pay higher taxes? How can these taxes help the environment? Environmental pollution is a serious problem, so be thorough and use rich evidence to support your claims.