Brain under air pollution (IMAGE) Hiroshima University Caption Scientists from Hiroshima University uncovered the relationship between stroke and air pollution. Credit Yasuhiro Ishihara, Hiroshima University Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. License Original 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.