Air quality is still a major problem in much of the world. Greenhouse gases and other pollutants still continually make their way into our atmosphere. On a global scale these emissions contribute to climate change. On a local level they contribute to air pollution which contributes to heart and lung diseases.

This study looks at population density within the land-use of an area to determine if there is a negative correlation with transportation emissions. The goal of this study is to enrich our understanding of how we contribute to air pollution. My hypothesis predicted that population density leads to lower average driving distances which in turn improves air quality.