Nitrogen Dioxide Levels in Beijing (IMAGE) NASA/Goddard Space Flight Center Caption This map, an average of August 2005-2007 nitrogen dioxide levels, shows high levels of pollution in Beijing and other areas of eastern China. Credit NASA Usage Restrictions None 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.