Haze in Washington, D.C. (IMAGE) American Geophysical Union Caption Air pollution is the leading environmental risk factor to health, and it inequitably affects people of color and low-income residents in the D.C. area, according to new research in GeoHealth. Credit Jim Kuhn Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.