Navaneethan S is a Civil Engineering and History Graduate. He is a Civil Service aspirant turned Mentor for competitive examinations. He had worked as Design Engineer in a MNC at Chennai. He has mentored in various leading institutes of Chennai for aspirants appearing for competitive exams for more than 7 years. He had successfully cleared many exams and himself veteran of UPSC, TNPSC, SSC and other competitive exams.

          He had worked in Tamil Nadu Government Services in Group II cadre for one year, later resigned to meet his vision of serving society for larger good. He is the Founder-President of NGO named OLI Organisation which works in Tamil Nadu and Kerala in various social needs. This book is outcome of long thought idea to give aspirants appearing for TNPSC to have single source for topic like Environment, Bio-Diversity and Disaster Management. The other book of the author is Social Issues in India and Tamilnadu, General English for TNPSC and Science and Technology in the Development of India and India Mattrum Tamilnattin Samugha Pirachanaigal.