One advantage of natural gas is that it emits less carbon dioxide than other fossil fuels. But releasing unburnt natural gas into the atmosphere contributes significantly to global warming. That's because natural gas is mostly methane, a greenhouse gas 30 times more potent than carbon dioxide. Stanford's Adam Brandt and colleagues have found that methane leakage from the US natural gas infrastructure is much higher than official estimates, a problem that can be addressed by the industry.
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