Hudson River Estuary site Iona Island (IMAGE) Advanced Science Research Center, GC/CUNY Caption Soil samples were collected from Iona Island (seen here) and two other wetland area in the Hudson River Estuary and tested in a laboratory setting to determine if exposure to excess carbon pollutants stimulated production of methane and carbon dioxide emissions. Credit Brian Brigham Usage Restrictions Photos use w/ credit only in associated stories. 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.