Dirty Air (image) Earth Institute at Columbia University Share Print E-Mail Caption Study author Dan Westervelt sets up an air-quality monitor in Kinshasa, capital of the Democratic Republic of the Congo. Credit Courtesy Dan Westervelt Usage Restrictions Credit must be given. Share Print E-Mail 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.