Going Carbon Negative

Forget wind and solar. A process called pyrolysis could produce energy more efficiently than either one.

Let our journalists help you make sense of the noise: Subscribe to the Mother Jones Daily newsletter and get a recap of news that matters.


When plants are burned or decay, carbon is released, combining with oxygen to become CO2. But when the same plants are heated in a kiln without oxygen, a process called pyrolysis, about half of that carbon turns into charcoal, a substance so inert it takes hundreds of years to revert to CO2.

Pyrolysis can be performed on an industrial level—a Wisconsin-based company called best Energies sells a device that processes about two tons of wood or other biomass (including turkey waste) an hour—or on a small scale anywhere on earth. The resulting “agrichar” or “biochar” makes a great soil amendment, which means fewer greenhouse-
enhancing fertilizers, and more crops that can be turned into more biochar…It’s the most virtuous of circles.

Added bonus: Pyrolysis produces a gas that can be burned to produce more energy than the pyrolysis itself requires—energy that beats wind or solar in that it’s actually carbon negative. Cornell University’s Johannes Lehmann, a leading expert on the subject, believes the US could convert huge amounts of logging and agricultural leftovers into biochar, and even grow crops just for that purpose. Pyrolysis, he estimates, could eventually offset nearly a third of America’s CO2 emissions.

SIX TRUTHS

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.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

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.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

payment methods

SIX TRUTHS

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.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

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.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate