Sponge Setup (IMAGE) University of Washington Caption University of Washington researchers created a sponge-like material, left, from wood pulp and small bits of metal that can remove color from dyes in water within seconds. More of the material is shown in the tubes on the right. Credit Mark Stone/University of Washington Usage Restrictions Photo 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.