Patricia L. Clark (IMAGE) University of Notre Dame Caption Patricia L. Clark, the O’Hara Professor of Chemistry and Biochemistry at the University of Notre Dame. Credit Photo by Matt Cashore/University of Notre Dame Usage Restrictions With Credit 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.