Recognizing that world population growth will be explosive well into the twenty-first century, Six Billion Plus offers a geographical and global perspective on the profound implications of this trend. This compact, balanced, and accessible text focuses on the key factors that will shape the global environment in the decades to come, including population fertility, epidemics like HIV/AIDS, legal and illegal immigration, refugee flows, scarce resources, and the potential for conflict. This fully updated edition will be an invaluable resource for all readers concerned with the intertwined issues of population, environment, and health.