Airplane (IMAGE) Penn State Caption In a series of flights during NASA's ACT-America campaign, Penn State researchers measured methane plumes in the atmosphere over portions of south central US. The researchers found measurements of methane emissions from the oil and natural gas industry are higher than EPA estimates. Credit David Kubarek, Penn State Usage Restrictions Non commercial use only 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.