Covering all aspects of interaction of man and environment, related to air, water and soil pollution and their cyclic nature. Concept of biodiversity in relation to the dangers posed to the diversity of flora and fauna. Global warming and climate change Environmental impact assessment is discussed with case study on coal based thermal power plant along with a brief outline on environmental audit. Environmental laws, policy matters that help in drafting them are discussed Examples cited with detailed scientific data on issues such as green house gases, ozone holes, water pollution and soil degradation