Good Methane Burps

Liam M. Higgins

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We’ve been hearing for a while how warming temperatures might release huge burps from methane deposits on the seafloor and from permafrost—frozen reservoirs known as clathrates.

This is not something we want. Methane is 20 times more powerful than carbon dioxide as a greenhouse gas. In the last 150 years it’s more than doubled in the atmosphere until today it totals about half the greenhouse effect caused by carbon.

The good news is that the latest belch 11,600 years ago appears to have been caused by expanding wetlands not melting methane ice. This according to a Scripps Institution of Oceanography study measuring carbon-14 isotopes in methane from air bubbles trapped in glacial ice. They found the surge 11 millennia ago was more chemically consistent with an expansion of wetlands. The paper’s in Science.

Wetlands profusely produce methane as bacteria breakdown organic matter. Wetlands also tend to spread during warming periods.

Not this one though. We’re destroying coastal and inland wetlands faster than any other ecosystem on Earth, according to the 2005 Millennium Ecosystem Assessment.

So we’re killing off the methane factories. But also the biodiversity factories, the water filtration factories, the storm-buffer factories. Wetlands provide ecosystem services estimated at $14 trillion a year.

Sigh. Burp.
 

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Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

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Truth #6: The only thing that can save us is…us.

Please take a moment to see how all these truths add up, because what happens in the weeks and months ahead will reverberate for at least a generation and we better be prepared.

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