Contact Controlled Aging (IMAGE) University of Delaware Caption University of Delaware chemical and biomolecular engineering professor and chair Eric Furst and a team of researchers from the Ecole des Ponts and University Paris-Est and in France have discovered a process called contact-controlled aging that explains some age-related changes in paste materials. Credit Photo illustration by Joy Smoker 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.