Natural gas emits only half the carbon dioxide of coal when burned, but if methane leaks when oil companies extract it from the ground in a sloppy manner - methane is far more potent a greenhouse gas than carbon dioxide - it can wipe out all the advantages of natural gas over coal.

Thomas Friedman

Thomas Friedman

Advantages Burned Carbon Carbon Dioxide Coal Companies Extract Far Gas Greenhouse Ground Half Leaks Manner More Natural Natural Gas Oil Oil Companies Only Out Over Potent Sloppy Than Wipe

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