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Recent updates from the Science-Based Targets initiative (SBTi) have pushed an old debate into public awareness, highlighting a perceived divide between emissions reductions and carbon removals. While SBTi's new guidelines focus on cutting emissions directly within company operations, some argue this creates a false dichotomy, downplaying the essential role of carbon removals in achieving net-zero goals. In reality, both strategies—reductions and removals—are not opposing forces but complementary tools needed to combat climate change effectively.

In Episode 69 of Bionic Planet, I spoke with Eli Mitchell-Larsen, a self-described "carbon removal evangelist," who provides valuable insights into the various types of carbon removal methods, including nature-based, hybrid, and engineered solutions. I'm rerunning this episode here today as episode 111.

The discussion begins with a focus on the importance of both reducing emissions now and removing existing gases from the atmosphere to achieve net zero emissions by 2050. The host and guest emphasize the need for a comprehensive approach that includes a mix of nature-based solutions, such as afforestation and soil carbon sequestration, as well as engineered technologies like direct air capture.

Throughout the episode, the host and guest explore the different categories of carbon removal, including biomass carbon removal and storage, geological storage, and unconventional methods like kelp farming. They highlight the importance of understanding the capture, utilization, and storage of carbon in evaluating the effectiveness and durability of each method.

The conversation also touches on the evolving landscape of carbon removal technologies, with a focus on the need for continued research and development, government support, and deployment incentives to scale up promising solutions. The host and guest stress the urgency of accelerating the deployment of carbon removal strategies to address the escalating climate crisis.

Overall, the episode provides a comprehensive overview of the complexities and challenges of carbon removal and reduction efforts, emphasizing the need for a multifaceted approach to combatting climate change effectively. Through engaging dialogue and expert insights, listeners gain a deeper understanding of the critical role of nature-based and engineered solutions in achieving a sustainable future.

Timestamps

• Introduction to Nature-Based Climate Solutions

• Discussion on the Importance of Carbon Removal

• Different Types of Carbon Removal

• Nature-Based Solutions and Soil Carbon Sequestration

• Carbon Capture and Storage Technologies

• Accelerating Deployment of Carbon Removal Technologies

• Cost Considerations and Government Support for Research and Development

Quotes

• "The great tragedy of climate and biodiversity finance is that those who understand it most have their noses to the grindstone, while those who understand it least have their mouths to the megaphone." - 00:00:53-00:01:03

• "The only thing we can all really agree on at this point is that to meet the climate challenge, we must eliminate those emissions that we can eliminate and then find ways to suck the rest out of the atmosphere, getting to net zero emissions by 2050 at the latest." - 00:02:52-00:03:03

• "The fact that these tiny oscillations in the obliquity or the eccentricity of the Earth's orbit can kick into motion and then be magnified by the biological system and swing the climate into different states. It's just so fascinating. It's so powerful." - 00:10:48-00:10:58

• "Earth. We broke it. We own it. And nothing is as it was. Not the trees. Not the seas. Not the forests, farms, or fields. And not the global economy that depends on all of these." - 00:06:07-00:06:18

• "We know that the enemy is carbon and we know its ugly face. We should put a big fat price on it. And of course, add to that, drop the subsidies." - 00:05:56-00:06:07

• "There's a group of us now who are proposing that the Earth has actually entered a new epoch, and that is the Anthropocene." - 00:05:56-00:06:07

• "We can restore it. Make it better. Greener. More resilient. More sustainable. But how? Technology? Geoengineering? Are we doomed to live on a bionic planet? Or is nature herself the answer?" - 00:06:18-00:06:29

• "The enemy is climate change and the we is the climate community. Those of us who've been in the trenches fighting this beast for decades in some cases." - 00:01:47-00:01:57

• "I think carbon removal and storage, removing carbon and then storing it safely somewhere, it serves a couple purposes." - 00:12:51-00:13:01

• "The more you do something, the more you build, the more the costs go down. And we've seen this happen with solar and wind." - 00:44:34-00:44:44