Environmental economics integrates environmental and ecological systems into economic models. It evaluates how these changes influence the positive predictions and normative recommendations of economic analysis. There are many things derived from environmental and ecological systems that people care about because they enhance well being or contribute to the production of marketed commodities. As a rule they are also scarce, available outside markets, and influenced by the activities of others. This article considers the allocation problems posed by environmental commodities, the design of policies to address them, the roles for nonmarket valuation and benefit-cost analysis, issues posed by the distribution of environmental effects and the interaction of growth and the environment. This information can be published in our peer reviewed journal with impact factors and are calculated using citations not only from research articles but also review articles (which tend to receive more citations), editorials, letters, meeting abstracts, short communications, and case reports. The inclusion of these publications provides the opportunity for editors and publishers to manipulate the ratio used to calculate the impact factor and try to increase their number rapidly. Impact factor plays a major role for the particular journal. Journal with higher impact factor is considered to be more important than other ones.