Traces the development of primitive societies showing why some groups advanced more rapidly than others and how this progression explains why various populations stabilize at specific phases of development.
Argues that the Earth's potential to produce food has reached the point where it can no longer keep up with population increases, and offers suggestions for achieving a humane balance between food and people.
An account of America as it was before it got its name. Presents a heart-rending portrait of the lush, miraculous New World on the eve of the first arrival of the Europeans.
