Measuring Epoxides (image) California Institute of Technology Share Print E-Mail Caption Caltech scientists used mass spectrometers on NASA's DC8 aircraft to measure epoxides above Canada's Boreal Forest last summer. These epoxides are formed from isoprene, a chemical emitted into the atmosphere by many deciduous plants. Credit Yohei Shinozuka Usage Restrictions With credit as given above Share Print E-Mail 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.