EnergyWire: Concerns have cropped up in recent years that the methane leaks from oil and gas fields could be large enough to pose a significant climate threat. In various studies, scientists have estimated that anywhere between 1 and 10 percent of natural gas produced leaks through wellheads, transmission lines and compressor stations. Recent measurements from the Uinta Basin of Utah taken by the National Oceanic and Atmospheric Administration set leakage as high as 9 percent. Now, preliminary results are...