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Environmental Defense Fund
Reducing methane is a wise short-term win
Reducing methane is a wise short-term win

For too long, carbon dioxide has dominated the discussion of greenhouse gases; for the most part, it has been the discussion. That gas, emitted by the burning of fossil fuels, is, after all, the biggie in terms of volume. But this single-minded approach has meant that the so-called short-lived gases have been all but overlooked, and that's a mistake. There might be less of them in the atmosphere, but they are powerhouses when it comes to trapping heat. Methane, for example, is 80 times more potent at trapping heat than carbon dioxide for 20 years after it is released, and 20 times more potent over 100 years. Soot and refrigerants are similarly potent. In the long term, carbon is...

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