Mark Widrlechner, Iowa State University (IMAGE) Iowa State University Caption Mark Widrlechner looks at a few of the thousands of seeds currently in the storage facility. Widrlechner is in charge of a nationwide effort to collect seeds from ash trees before they are destroyed by a pest accidentally imported from Asia to Michigan by an unknown source several years ago. Credit ISU photo by Bob Elbert 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.