Chlorella vulgaris (image) University of Exeter Share Print E-Mail Caption Phytoplankton absorb as much carbon dioxide as tropical rainforests and so understanding the way they respond to a warming climate is crucial. Credit Gabriel Yvon-Durocher Usage Restrictions Use with accreditation. 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.