Pores (IMAGE) Kyoto University Caption Researchers documented how a porous material can change and retain its shape, even after absorbing and releasing carbon dioxide. Here, the crystal's pores remain open after releasing carbon dioxide, but can be collapsed when heated. Credit Kyoto University iCeMS 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.