Lee Ferguson, Duke University (IMAGE) Duke University Caption Nanotechnology researcher Lee Ferguson stands amid a collection of simulated wetlands called mescosms at Duke University. Each wetland-in-a-box is used to run the experiment under varying conditions. Credit Duke University 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.