Methane Bubbles Pantanal (VIDEO) Radboud University Nijmegen This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Methane bubbling up in the Pantanal, Brasil, the world's largest tropical wetland area. Credit Radboud University Usage Restrictions Credit to Radboud University 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.