Natural-Gas Spill: How Bad Is Methane for the Environment? – TIME.
“The clean, green claim is more than just hype. Natural gas produces about half as much carbon dioxide as coal does when burned. But it’s not quite that simple. Some amount of methane will always leak away during the production of natural gas — particularly during the process of drilling or transporting via pipelines. And that means more warming. If enough methane leaks, natural gas loses its clean reputation — and the billions of dollars of new natural-gas infrastructure now being built could end up making the climate worse, not better.”