Carbon (1 of 2) (IMAGE) Rice University Caption A scanning electron microscope image, left, and a high-resolution transmission electron microscope image show an activated, sulfur-containing porous carbon sample. The material created at Rice University can be tuned to balance carbon dioxide sequestration and methane selectivity. Credit Barron Research Group/Rice University 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.