Researchers Work on Upcycling PET (IMAGE) Cell Press Caption This photo shows researchers Beckham and Nic Rorrer working on a process of upcycling: breaking down PET in existing waste and combining it with compounds derived from biomass to make something more valuable, such as fiber-reinforced composite materials. Credit Dennis Schroeder / NREL Usage Restrictions Credit Required 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.