The crucial interdependence between humans and their environment is explored and illuminated in this revealing overview of the major environmental issues facing society in the twenty-first century. With attention to detail and cogent language, the author describes how human health and well-being are inextricably bound up in the web of interrelationships that characterize life on this planet. The presentation combines an overall ecological concern with specific elements related to personal and community health, giving readers a clear sense of how today's environmental issues directly impact their own lives. New to the seventh edition is a chapter on clean energy alternatives that evaluates the long-term potential of the most promising renewable energy technologies as well as short-term strategies to increase energy efficiency. The discussion of global climate change has been significantly updated to reflect the latest assessments of the Intergovernmental Panel on Climate Change with regard to evidence of global warming, mitigation strategies, and adaptation measures, as well as an up-to-date summary of ongoing international efforts to negotiate binding treaties that would produce meaningful reductions in greenhouse gases. Our Global Environment is widely praised by students and faculty for its clear, compelling presentation. Abundant photographs and illustrations highlight salient issues and clarify trends, while boxed inserts in every chapter contain timely examples of general concepts presented in the chapters.