Optical setup (IMAGE) Optica Caption Researchers have developed a new sensor that uses an interband cascade light emitting device (ICLED) and could allow practical and low-cost detection of low concentrations of methane. Credit Sameer Khan 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.