The Guardian reports: Natural gas has been touted as an environmentally friendly substitute to coal and oil production, but a new report estimates enough gas is leaking to negate most of the climate benefits of process.

The report, commissioned by the Environmental Defense Fund and carried out by environmental consulting group ICF International, estimated the amount of leaks from natural gas and oil production on federal and tribal land in the US. It also looked at venting and flaring, processes in which drilling sites purposefully let gas go into the atmosphere for a variety of reasons – usually for safety.

The claim that natural gas is environmentally friendly hinges on how much methane leaks into the atmosphere during the production process. But the EDF report adds weight to those who say methane leaks at natural gas sites can make the process nearly or as carbon-intensive as coal.

The EDF found that 65bn cubic feet of natural gas was released into the air on federal and tribal lands in 2013 – amounting to about $360m of lost gas. That, the EDF says, is not only an economic loss, but an environmental problem. Methane, the main ingredient in natural gas, is 84 times more potent than carbon dioxide over short periods of time and 30 times more potent over the long term. [Continue reading…]