From the chapter on...

Population

Planned Parenthood

Information on health care, parenthood and birth control.

Child Welfare Information Gateway

Resources on all aspects of domestic and intercountry adoption. From the U.S. Dept. of Health and Human Services

World Population Awareness

Goal is to preserve the environment and its natural resources for the benefit of people, families, and future generations

Dieoff

A grim look at the future

Sierra Club

Global population and the environment.

Tragedy of the Commons

Wikipedia article

Population Connection

Formerly Zero Population Growth