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Instant summaries in graphics and text of the demographic characteristics of the U.S. population. From Population Reference Bureau, non-profit organization for objective research.

An activist network concerned with national revitalization, population stabilization, immigration reduction, sustainable economic activity, and resource conservation.

Supports voluntary family planning as a key element in conserving and restoring natural ecosystems.

Discusses population issues, impacts and solutions.

A library of electronic documents created by partner organizations working in reproductive and child health, HIV/AIDS, and population.

PAA is a non-profit, scientific, professional organization established to promote the improvement, advancement and progress of the human race through research of problems related to human population.

Organization seeking to improve the wellbeing and reproductive health of current and future generations around the world, and to help achieve a humane, equitable and sustainable balance between people and resources.

Aimed at doodlers worldwide, this offers a unique chance to contribute your portrait to a special exhibit that will show 6 billion drawings of the world's people together for the first time ever.