Some companies are concerned with saving money, instead of saving the enviroment.
They support or move companies to countries with weak enviromental regulations so that they can by pass responsibility. For instance, it is a well known fact that many companies have relocated to Mexico because enviromental regulations are not as strict as in the United States. Therefore, air pollution has increased dramatically south of the border. Ironically, the waste from these irresponsible corporations travels back to the United States via the Colorado River and potent gas clouds along the southern United States. American companies also support corporations polluting the enviroment by continuing to do business with them.