Photo 1 (IMAGE) Helmholtz Centre for Environmental Research - UFZ Caption The world's tropical forests store huge quantities of carbon in their biomass and thus constitute an important carbon sink. Credit © R-M-Nunes_Shutterstock 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.