INTRODUCTIONI am taking this course because I am very interested in the environment, in recent years following the various news and the evolution of interest public on the matter. I think nature is an important and highly relevant subject. This is how I decided to take the Environmental Marketing Management course, critically in relation to everything I was learning and studying. This is a departure from my personal idea that every piece of writing or article we read is not objective, but subjective. Fortunately, during this period of study, I had the opportunity to study environmental marketing management and my public economics exam and discover how the topics are linked under the argument of bad externalities. I am currently studying the different types of government (in this case the USA) control over pollution, with the aim of regulating the economy and protecting the environment. The idea of ​​the author (Joseph E. Stiglitz, former chairman of President Clinton's Council of Economic Advisers) is radically different from those heard in class. I prefer to have different documentation and gain new knowledge. Fines, tradable permits, regulation and innovation are different ways for a government to control pollution which constitutes a bad externality in that, if by producing we create goods useful to the person, we create pollution which is an expensive problem to solve. The author follows the same points discussed in the lesson. Fines and tradable permits are not the best solution. In both cases, companies could be pushed, to maximize their profits, to pay the fines or buy tradable permits from less polluting companies (depending on the level of the fine); the same goes for subsidies. Performance and input-based regulations are being introduced as one of the best ways to control market-created pollution. Performance-based regulation can create some market unfairness, such as the example of scrubber regulations in the US coal industry, where the imposition of pollution limits has driven some western producers -United not to use scrubbers due to the different geological characteristics of the resources. with bad competition for the Eastern producer. In this way, performance-based regulations differentiate between geographies; but it would be better if all producers were pushed to reduce pollution. This type of solution was often driven more by politics than policy. Different problems for the national economy could also be posed by innovation policy..