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Methane is a major contributor to climate change behind CO2 — but it's been largely overlooked05:07
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A cow eats grass in a field at a farm. (Lou Benoist/AFP via Getty Images)
A cow eats grass in a field at a farm. (Lou Benoist/AFP via Getty Images)

Until now, methane has gone largely undetected as a contributor to climate change. The greenhouse gas is more potent than carbon dioxide.

The United States has joined with more than 30 countries in a pledge to tackle methane emissions.

Here & Now's Peter O'Dowd talks with Mark Brownstein, senior vice president of energy at the Environmental Defense Fund.

This segment aired on October 22, 2021.

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