Living Materials Laboratory (IMAGE) University of Colorado at Boulder Caption Students working in the Living Materials Laboratory, which utilizes calcifying microalgae to produce limestone and create a carbon neutral cement, as well as cement products which can slowly pull carbon dioxide out of the atmosphere and store it. Credit Glenn Asakawa / CU Boulder Usage Restrictions None License Original 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.