EIA is an exercise to be carried out before any project or major activity is undertaken to ensure that it will not in any way harm the environment on a short term or long term basis. Any developmental endeavor requires not only the analysis of the need of such a project, the monetary costs and benefits involved but most important, it requires a consideration and detailed assessment of the effect of a proposed development on the environment. The environment impact process was introduced with the purpose of identifying /evaluating the potential beneficial and adverse impacts of development projects on the environment, taking in to account environmental, social, cultural and aesthetic considerations. All of these considerations are critical to determine the viability of a project and to decide if a project should be granted environmental clearance.

Associate professor, S.N.College, Kollam, Kerala, India. He is the president of Kerala Environmental Researchers Association (KERA). in 2008, NASA and IAU (International Astronomical Union) have been named a minor planet after his name (5178 Pattazhy Planet). also, his name has been included in the world category scientists list in 2009.