Environment is the concern of one and all. As a matter of fact, we are living on an edge in this age of environmental problems such as pollution, global warming, climate change, receding glaciers and depleting natural resources. There is need to create awareness about environment among all sections of society. The University Grants Commission?s decision of introducing Environmental Science as a compulsory subject at undergraduate level in all the universities is a welcome and worthy step in this direction. This book provides a comprehensive view of environment, environmental resources, environmental problems and environmental concerns in three sections for focused study. Section A consists of earth and environment, ecology and biodiversity, finite nature and problem of overexploitation of environmental resources. Section B discusses various environmental problems such as air, water, noise and solid waste pollution and related health hazards along with land-related problems like land degradation, soil erosion, etc. Contemporary important issues like greenhouse effect, global warming, climate change, Asian brown haze, etc. have been discussed in sufficient detail. Provisions of regulatory norms for pollution, vehicular emission, effluent discharges and environmental legislations are also discussed in this part. Major environmental concerns such as urban forestry, eco-tourism, environmental considerations, environmental education and international efforts like Agenda 21 have been studied in detail in section C. The book is meant for the students, teachers and researchers of Geology, Geography, Environmental Science and Mining Engineering at University level. It will also be of immense help to students preparing for competitive examinations like UGC-CSIR (NET), GATE and SLET for JRF and lectureship eligibility in universities and colleges as well as GSI, ONGC, OIL, CIL, CGWB, NMDC, etc. and also for administrative services (IAS, IPS, IFS, PCS, etc.).