Center for Biological Diversity Population Program

Program examining the links between human overpopulation, urban expansion, and wildlife extinction.

Global Footprint Network

International think tank assessing human demand on nature relative to Earth"s ecological capacity.

Optimum Population Trust (Population Matters)

Campaigning charity addressing human overpopulation and its pressures on natural resources and ecosystems.

Population Reference Bureau

Organization analyzing demographic data and providing insights on human population growth and environmental impacts.

SBI - Sociedade Brasileira de Imunologia

A Sociedade Brasileira de Imunologia representa a comunidade de imunologistas brasileiros e tem como objetivo principal difundir a pesquisa e o ensino em Imunologia no Brasil, tanto no que se refere aos seus aspectos básicos como clínicos.

UN Population Division

Official United Nations body providing global demographic research, population trends, and growth projections.