Wood Carbon Sponge after Compression (image) Cell Press Share Print E-Mail Caption In this photograph, a wood carbon sponge rebounds to its original shape after compression. Credit Chen et al. Usage Restrictions Credit Required. Share Print E-Mail 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.