Kathleen Alexander, Virginia Tech (IMAGE) Virginia Tech Caption Kathleen Alexander (second from right), shown with residents of Kasane, Botswana, while conducting household surveys of the region, works with communities trying to understand connections between the environment, water quality, and human diarrheal disease. Credit Virginia Tech 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.