Linsey Marr, Virginia Tech (IMAGE) Virginia Tech Caption Poor air quality apparently affects the running times of women in marathons, according to a study by Virginia Tech civil and environmental engineer Linsey Marr. Credit Virginia Tech Photo Usage Restrictions The photo may be used in connection with Dr. Marr's air pollution research. 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.