The fourth edition of this highly acclaimed text on the natural environment of the earth has now been thoroughly revised and updated and includes a new chapter on The Organic World, more "windows", new illustrations, and a range of other features. Fully updated with an entirely new chapter, and new features throughout. Now features a list of key concepts and points for review. Includes increased number of windows, updated and expanded reading guides, and new plates and diagrams. Well illustrated with updated examples and case studies. Puts more stress on the importance of hazards, natural environmental changes, and human impacts.