Luquillo Experimental Forest (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption An expedition into the Luquillo Experimental Forest in Puerto Rico by JBEI and Berkeley Lab researchers led to the identification of a soil microbe that utilizes lignin as their sole source of carbon. Credit Photo from Kristen DeAngelis 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.