Methane, a short-lived greenhouse gas with 120 times the heat-trapping potential of carbon dioxide on a mass basis (1), is responsible for 锝?5% of today's manmade global warming. Addressing climate change effectively requires both rapid reductions of emissions of carbon dioxide, a long-lived climate pollutant, as well as those of methane, a short-lived climate pollutant (2). The oil and natural gas (O/NG) supply chain, which accounts for about one-third of global anthropogenic methane emissions (3), provides an important opportunity for cost-effective reductions (4). Natural gas is composed primarily of methane, and a salable product can be captured when emissions are controlled. According to the International Energy Agency, 40-45% of O/NG methane emissions can be mitigated at zero net cost worldwide (5).
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