For more around a decade methane concentrations in the atmosphere were pretty much constant from year to year. In the last few years they have begun to creep up again Is that the sign of the fracking boom? Some research finds that methane leakage from fracking is much greater than from traditional gas fields and supply networks. We estimated that gas supply was the smallest anthropogenic source and gas flaring had declined from its peak contribution:
Flaring might also be again increasing. Climate Progress posted this image of gas flaring in North Dakota:
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