a href="http://www.oupcanada.com/ebrochure/dearden/index.html"img src="/images/hed/closer_look_btn.gif"/aNow in a fourth edition, Environmental Change and Challenge is a fascinating introduction to the field of environmental studies. Respected geographers Philip Dearden and Bruce Mitchell explore a host of contemporary environmental issues such as drought, flooding, loss of biodiversity, ecosystemtoxicity, and crop failure, while also offering a detailed overview of basic scientific concepts. Maintaining the same optimistic tone of previous editions, the text emphasizes that informed global citizens are the key to meeting these challenges and generating positive change. With increasedcoverage of demography, more international examples, and new material on human health and the environment throughout, this updated edition shows students how environmental concerns impact our daily lives both at home and abroad.