As an introductory text aimed at those who have little background knowledge of the field and who require only a modest background in science; the understanding of our environment has no parallel. This third edition improves the position of the title by developing a more international approach. By uniting all important environmental media; such as the atmosphere; freshwater; oceans and solid earth; it also emphasizes the interconnections between these media. The main human and environmental impacts of pollution are summarized; and case studies are included as illustrations of the necessary measures for control. Examples and solved questions are included to facilitate both teaching and learning of the subject. This book will be an essential reading for students of environmental sciences and related areas; as well as for scientists and engineers in the industry.