Funded by the Natural Resources and Defense Council, this website provides information on causes and facts related to air pollution. It provides factsheets, overviews, and reports about various environmental issues.

From the National Institute of Environmental Health Sciences, which funds research to discover how the environment affects people in order to promote healthier lives.

This organization is the leading international body for the assessment of climate change. Its mission is to provide the world with a clear scientific view on the current state of knowledge in climate change and its potential environmental and socio-economic impacts.

A non-partisan think tank. It specializes in researching climate change and the environment.

A website by the American Lung Association. This website provides information on key findings, city rankings, health risks, and how to reduce air pollution. The information provided is useful for information regarding recent air pollution information and findings.