Rainforest Drought (IMAGE) U.S. National Science Foundation Caption Scientists at NSF's Luquillo Critical Zone Observatory are tracking drought in the rainforest. Credit NSF Luquillo Critical Zone Observatory 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.