Global Journal of Environmental Science and Management has been approved and recognized as a journal of the highest ranking by the Ministry of Science, Research and Technology of Iran as the first rank (A+ = 100). Also, GJESM has been approved by the General Office of Science Development and Scientometrics of the Central Organization of Islamic Azad University (IAU) and its validity has been announced to the Science and Research Branch. GJESM is currently indexed in the Web of Science: ESCI, ProQuest, Chemical Abstract and Agricola. Therefore, all published manuscripts in this journal can be considered for graduation of IAU postgraduate students as well as for the promotion of IAU faculty members.