Pollution Hotspots (IMAGE) University of Texas at Austin Caption Researchers identified high concentrations of pollution, called 'hot spots,' that were highlighted in the map and images. Some hot spots included warehouses, high-traffic intersections, car dealerships and drive-through restaurants. Credit American Chemical Society Usage Restrictions Please credit the American Chemical Society. License Licensed content 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.