Yasaman Ghadar Code Hour (IMAGE) DOE/Argonne National Laboratory Caption Argonne computational scientist Yasaman Ghadar highlights her work on supercomputers to students at Concord Elementary School in Darien, Illinois as a first-time volunteer for Hour of Code. Credit (Image by Argonne National Laboratory.) Usage Restrictions Original content 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.