The world's population has more than doubled in the past fifty years, which has strained natural resources, increased pollution, and harmed many plants and animals. This book examines demography around the world, covering immigration, refugees, urbanization, poverty, trade, and access to water and food. Controversial issues such as eugenics and abortion are also discussed in terms of their impact on population and birth rates, providing readers with various perspectives to critique this complex issue.

Includes glossary and index.