Navigating Carbon Markets from the Climate Rising Podcast

On the Climate Rising Podcast, business and policy leaders join Harvard Business School faculty to discuss what businesses are doing, can do, and should do to confront climate change. Each episode dives into a particular topic with a subject matter expert in the field. While not presented in a true storytelling fashion, if you’re personal story involves a technical or scientific topic, there is much to learn about how complex issues can be dissected and presented in a way the general public will understand.

Alexia Kelly, Managing Director of the Carbon Policy and Markets Initiative (CPMI) at the High Tide Foundation, joins host Mike Toffel for the fifth episode in our series on voluntary carbon markets. Alexia has worked for nearly two decades at the intersection of carbon markets, policy, and finance, with roles spanning government, private industry, and nonprofits.

In this episode, Alexia discusses how voluntary carbon markets are evolving, the critical role of policy in shaping carbon finance,and how standards and governance can improve market integrity. She also explores how advances in digital technology, data transparency,and AI-driven monitoring are transforming carbon credit verification and market confidence.

Additionally, she shares her perspective on the integration of voluntary and compliance markets, including recent developments in Article 6 of the Paris Agreement.Alexia also offers career advice for those looking to enter the field and shares resources for staying informed on carbon markets and climate finance.

Okay, so there’s a lot of technical information here, along with acronyms, policies, and agencies. But note how Mike steers the conversation — at times diving deeper, while in other cases changing direction or seeking clarification.

You can use this technique by asking a trusted friend to interview you. They do need to have a basic understanding of your topic, of course, but having another person ask questions allows you to think about your story differently. Give this episode a listen and peruse the transcript to uncover new ways that complex stories can be told. The world needs to hear you, but also understand your message.

Transcript

Note: The following was AI generated, and may not perfectly match the interview.

Mike Toffel:

Alexia, thank you so much for joining us here on Climate Rising.

Alexia Kelly:

Thanks for having me, Mike.

Mike Toffel:

So, you have a really interesting biography. You’ve worked in the nonprofit sector. You’ve worked in the private sector. You’ve worked in the government sector. Tell us a little bit about your background and how you ended up where you are today.

Alexia Kelly:

Yeah, sure. Great to be here and have this conversation today. I’ve had the opportunity to work on carbon markets really since some of the earliest days. So, I started my career in 2006, actually the first regulation of the greenhouse gases in the United States at a nonprofit in Oregon called the Climate Trust, which was established under the 1997 carbon dioxide regulation. And so basically ran parallel to the development of the Kyoto Protocol under UNFCCC. So, over the course of nearly two decades working in and around carbon markets and carbon pricing, I’ve worked in the nonprofit sector, including with the World Resources Institute on Waxman-Markey when we were trying to get federal legislation passed in the 2009, 2010 era. I was recruited to join the State Department team in 2010 at the beginning of the Obama administration and had the opportunity to spend a number of years there working both on international development work through our Enhancing Capacity for Low Emissions Development Strategies program, as well as our lead negotiator for emissions trading under the UNFCCC, which was pre Article 6, but we’ll talk a little more about Article 6 later, which are the emissions trading provisions of the Paris Agreement.

And then after that, I wanted to go into the private sector. So, I ended up working in a family office trying to understand why we had this big finance gap between all of the investment opportunities we were seeing in the climate clean energy space, particularly in emerging markets, and why that money wasn’t moving. So did a bunch of work on understanding capital markets and really tried to understand what motivates the private sector to take action, which led me to joining Netflix in 2019 to help establish its inaugural sustainability program. So, they had no sustainability program prior to that, not even a greenhouse gas footprint. And so, we really built the program all the way from the ground up. And so, I served as our director of Net Zero in nature there for about three years before joining the High Tide Foundation just a couple of years ago to establish on what is now the Carbon Policy and Markets Initiative.

Mike Toffel:

Great. So, it’s such an interesting and varied history. Let’s talk about the High Tide Foundation. What was it formed? It’s a family office. It’s a funder. And it has a few different sorts of lines of interest. So, if you could tell us about each of them, then we’ll dive more into the Voluntary Carbon Market’s piece of it.

Alexia Kelly:

Yeah, absolutely. So, the High Tide Foundation is a private family office philanthropy focused exclusively on addressing the climate crisis. There are two primary areas of focus for the foundation. We do a tremendous amount of work on methane through our funding of Carbon Mapper, the Methane Hub and other major initiatives to help really address and tackle methane pollution, which of course is one of the fastest kinds of emergency breaks we have to pull as we’re looking at addressing the climate crisis.

I lead our work focused on carbon markets and carbon pricing. And so that’s through the carbon policy and markets initiative, which we established just two years ago, to really help bridge what we observed was an increasing divide between where civil society and the science wants companies to be and where companies operating in the real economy actually are.

And so, I joke that now I’m just a professional board member and we spend lots and lots of time really trying to build bridges and establish high integrity rules of the road that accelerate action and ambition while also recognizing that there are very real constraints that folks operating in the global economy are facing as we seek to advance decarbonization solutions.

Mike Toffel:

Great. Now, we’ve spoken with Mark Kenber at VCMI and Amy Merrill at ICVCM, some of the organizations that you directly work with. Can you tell us a little bit about the bridges between the High Tide Foundation and your role and those organizations as well as others that you’re also helping to coordinate and sync up?

Alexia Kelly:

Absolutely. Yeah. So, I serve on the, as a board alternate, a high tide foundation was a major funder of the ICVCM, the integrity council for voluntary carbon markets predecessor, which was called the task force for voluntary carbon markets. and that you think you’ll cover that when you talk to Amy, but really coming in and having real capital markets actors looking for the first time at this artisanal baby carbon market that’s been out in operation for a number of years and really thinking, okay, what’s it going to take to grow that market?

So, the High Tide Foundation has been a primary funder of that. We also invest significant in-kind resources there. I serve on the standard oversight committee of the ICVCM as well as the, as the chair of our continuous improvement work programs, which I can talk a little bit more about later.

I also sit on the expert advisory group of the Voluntary Carbon Markets Integrity Initiative and on the US Technical Advisory Group of ISO, which is the International Standards Organization. So really spending a lot of time helping to connect dots and accelerate connective tissue among and between all of the different standard-setting bodies that are out there that are now really deciding what constitutes credible, voluntary corporate climate action and how do we do the accounting for those actions so that we know what’s working and what’s not working and really have a basis upon which to compare level of effort and engagement across this set of issues.

Mike Toffel:

So all these, as I understand it, all of these organizations basically are trying to lift the tide of standards so that the critiques that have befallen much of the voluntary carbon markets are addressed by, again, raising the bar, setting standards, say, you have to be at least some level of integrity in order to even be in the market of voluntary carbon markets. Because to the extent that there’s these laggards, it pulls down the whole industry. Is that the right way to think about it?

Alexia Kelly:

Absolutely. I mean, you need that strong floor. And actually, when I was at the Climate Trust in 2008, we established something called the Offset Quality Initiative because there was a lot of concerns over whether or not we were really going to be able to set that bar for offsets because this endeavor of pricing and measuring and quantifying the impact of actions that we’re taking to mitigate climate change is so challenging.

And so, we’ve really needed to agree on what a rule set is for how you do that accounting and how you do that measurement, because it didn’t exist. Like we’ve been literally making all of this up as we go for the last two and a half decades. And we’ve learned a lot. But I think it’s important to remember that this is really the first time we’ve ever tried to do this. And certainly, when we were writing the rules, the first time, you know, 15, 20 years ago,

We lacked a lot of the technologies, science, and data that we have available to us today, which means that you sort of have to set rules with what you have, right? As a policymaker, that’s what you do. You take the best available information, and you set the policy in the best, most rigorous way you think possible.

And so, we’ve seen that kind of continue to evolve in the carbon markets over the last 20 years and we’ve also gotten a lot better at doing this. And I think that doesn’t get enough credit and attention. We have actually a fair degree of uniformity and agreement now on what the core rules should be for what constitute high-quality carbon credit.

And we have a much better sense of what needs to happen between now and the next five years to really get this market to scale because it’s still not operating on the scale, right? It represented about $750 million in value last year. Like it’s a baby market still relative to almost any other capital market that’s out there.

Mike Toffel:

So, can you say that you’re seeing some progress in these areas and getting some consensus? Can you describe an example or two of what that looks like? So, what would have been allowed in the past that’s now not going to meet the minimum bars that these organizations are lobbying for?

Alexia Kelly:

Yeah, it’s a really good question because what we’ve seen over the last couple of years, particularly through the work of the Integrity Council for Voluntary Carbon Markets, is an emerging consensus on what global thresholds quality standards look like. So the core carbon principles that we’ve laid out, thinking about things like additionality, things like permanence, those key tenets of what constitute a credible way to measure the impact of the things we’re doing are pretty well established now. I think we’ve explored that from just about every avenue and there’s broad consensus on how you do that. The assessment framework that the ICVCM published a couple of years ago, which is the rule book by which we measure how these core carbon principles are implemented by the programs, also represents a really important step forward in terms of the consensus of what right looks like.

But one of the things that struck me the most as we’ve been going through, so what we do at the ICVCM is we go through methodology by methodology, and we look at all of the methodologies that the programs are using for a given type of project. So maybe a landfill gas destruction project, for example, or renewable energy credits or RED+ or improved forest management.

So, there’s different methodologies that have emerged to measure the impact of all of those things. And it often comes down to one or two key decisions or like emissions factors in each of those methodologies that determine how much credit you get for that particular project and determine whether we’re doing a good job of assessing the net impact of that particular project.

That set of work has been particularly challenging. So, we’ve assessed about 37 % of the market at the ICVCM right now, and we’ve only approved 3 % of the core methodologies. And one of the reasons that that’s the case is because of renewable energy. And renewable energy is kind of a fascinating example of how this market has evolved because when the first renewable energy projects were getting going, 25 years ago, 30 years ago, they were substantially more expensive than their fossil fuel incumbent alternatives, orders of magnitude more expensive. And over the last 20 years, we’ve seen just a precipitous decline in the cost of renewables, which is a wonderful thing. That’s exactly what all the policies we’ve put in place is what we wanted to see happen. But it calls into question whether a lot of those projects really need now the carbon finance to help close that financial viability gap. And yeah, sorry.

Mike Toffel:

Right. Let me just interject a minute. So just to make sure people are following this and make sure I’m following this. So, one of the criteria to have a carbon credit issued is it has to pass these many tests, but one of them is this additionality test, which essentially states, this project, does the project success in terms of being profitable depend, is it hinge on the climate finance coming from the carbon credits? Because if it would be profitable on its own, well then you don’t really need the carbon credits. And only if the carbon credit pushes it over that threshold, that’s when it can be issued a carbon credit. That’s the game, saying I’m going to invest in one carbon credit in order to create emissions reductions or removals that wouldn’t otherwise have happened. So, this is all about the counterfactual, just to catch folks up.

Alexia Kelly:

Exactly. Yeah. Thanks so much for that explanation. And that’s exactly right. And so we have about eight different ways in which we test for what’s called additionality, ranging from a peer financial additionality test, which are the carbon credits helping you meet your internal rate of return threshold, for example, all the way through to what we call positive list of technologies where we say, okay, we know that this technology is still more expensive and not common practice. And so therefore, up until a certain rate of penetration, all of that’s going to be considered additional and you don’t even have to think about it. If you meet this technology test, then you’re good to go.

Testing for additionality is extremely difficult, right? Because what we’re trying to do is develop a universally applicable sort of set of tests that can accommodate the almost infinite range of individual project circumstances, while also setting a pretty good threshold bar that’s enabling us to separate out the stuff that really didn’t need the carbon finance from the stuff that did. And, you know, as in most other fields, it’s not going to be perfect every time.

That’s just not the way the world works. And that’s OK. And I think that’s one of the things that the carbon market has really suffered from is this expectation that it’s perfect all the time. And it’s not going to be. And we don’t need it to be. What we need to do it to be is effective. And we do need it to be actually delivering the environmental impact that it needs in order to help us solve this problem. Because for me, if I’m going to spend $1 on climate change mitigation, I want to make sure that that dollar is doing something that wasn’t going to happen anyways, that has a lasting atmospheric impact.

And that’s really helping us move the needle on the climate fight because otherwise I’m wasting my money. And so that is what the carbon markets enable us to do. It’s the first place I always joke that, you know, the carbon markets aren’t the worst. They just went first. Like they were the first time we ever tried to do this huge, complicated thing. And we are getting much, much better at it than we used to be. And I’m feeling particularly optimistic that, you know, moving forward, we’re really going to be able to do that granular assessment much more robustly and rigorously, you know, in no small part, as we talked about yesterday, you know, just around the advent of new technologies and data and sources of information that we just simply didn’t have available the first time around.

Mike Toffel:

Great. And I want to dive into that in just a minute. Before I do that, one of the organizations that you mentioned you’re working with is ISO, or the International Organization for Standardization, Swiss-based with lots with national, in a sense, national offices or national outreach in each of the countries, including the US, under other names that are like ANSI and so on. And ISO has lots and lots of standards. I’ve done research in this area for some time. They have ISO 14,001, which is an environmental management standard, the 9,000-quality management standard, a more recent occupational health and safety, 45,000 in one standard. And they so far don’t have a standard, I understand it, on voluntary carbon markets and what constitutes like an ISO meets an ISO bar. And so, it sounds like they’re working on that. It’s taken… I don’t know, you mentioned 20 years for us to get there and we’re not there yet. Tell us a little bit about what ISO’s angle on this and why it has taken so long?

Alexia Kelly:

Yeah, there’s two things happening at ISO that are related to both supply and the quality of the credits and then demand. And I’ll touch briefly on both of those. The supply side is actually interesting because ISO has had a standard on how you do project-based greenhouse gas accounting for a very long time. We finished it in, I think, 2006 maybe, 1464-2, for those of you who want to go look it up. And what that does is basically provide very high level guidance around how you do this quantification. So, you need to think about additionality. You need to think about permanence. But it’s really at a principles level.

So, ISO tends to deliver standards that are at a relatively high level. And then you layer underneath it in more detail at the other standard level. So, as we’ve noted, what’s happened in this space in particular is that because it’s not regulated and because we haven’t been able to come up with a uniform global system to address this problem, we’ve seen this kind of thousand-flowers-blooming approach in the voluntary carbon market where a bunch of different nonprofits and regulatory regimes around the globe have sort of popped up and said, okay, this is important. We need to figure out how to do this. And somebody should really be bringing some transparency and oversight to this space. We’re going to do that on a nonprofit basis.

And so, you hear about the big four, Verra, ACR, and other carbon crediting standards that are active. Those are nonprofit organizations. They are often built on top of the ISO 1464-2 rules. So, what’s happened is that’s become the backbone. And then you have other organizations that have come in and kind of put the muscles and the flesh on the whole system so that you have a system for actually getting all the way through to market issuance and crediting. So, they are in the process of reviewing some of those core standards around what are the principles of defining quality.

On the other hand, and I think of interest to folks, you there’s been a lot of debate around what defines a credible net zero claim for companies that are taking voluntary action and what should be allowed to count. How do you set your target? How do you account for progress towards your target? What does that all mean? That’s the other half of the work that we do at CPMI quite actively. And that’s really part of this debate.

If we want a functional market, you need high quality supply. And you need high quality demand. We have to have both of those things. A market with no demand is not a market. And there are real ideological divisions in civil society and in the nonprofit space in particular around whether markets can ever be an appropriate way to solve environmental challenges. I think, over the course of my career, we’ve seen a number of instances where they’ve been harnessed very effectively to do that.

But there’s also been high profile failures, right? And if you read the New Yorker article about some of the stuff that’s happened in the voluntary carbon market, like the lack of oversight and regulation has been a real problem. And there are opportunities for carbon cowboys to come in and take advantage of the system. And so that’s really eroded trust and confidence, think, particularly among young people who are sort of saying, look, you guys have had 20 years to implement these market systems.

They aren’t working. We’re still in a climate crisis. And it’s a real honest and important and legitimate conversation to be having about where do we deploy market-based solutions effectively and where do we just need regulation? I think if you ask most of us who’ve worked in this space a long time, we’d prefer to have regulation hands down every time. But we’ve also really struggled to get regulation in place. And so now we’re in this world where voluntary action plays a really important role.

So ISO has actually established a process now to write rules around what a net zero standard might look like and what type of information you would need to disclose if you wanted to make a claim and have it, what we call assured or have a third party come in and look at what you’re saying to make sure it’s legitimate and meets the rules of an existing standard that’s out there in the world. So that conversation is happening right now under this big international umbrella in ISO’s incredibly complicated and kind of Byzantine architecture that frankly is worse than the UN. It’s kind of amazing. But those conversations are moving forward apace, and the hope is that they will have a kind of initial agreement on what our credible net zero standard looks like that’s internationally applicable in the next 18 months or so.

Mike Toffel:

Got it. I want to circle back to something you said earlier, where you said these markets have been evolving, and they don’t need to be perfect every time. I don’t know. wonder if, in fact, you mentioned the New York article has been a number of articles of instances when things haven’t worked, when the measurement has been proven to be overestimating, for example, how much carbon is actually being sequestered, or reversals occur. You prevent a stand of trees that had intended to be felled from, in fact, being felled and you’ve addressed leakage, no one else’s forest is falling instead, but then there’s a hurricane that knocks them down anyway or a forest fire.

So those emissions aren’t sort of secured for the long run, the permanence concept. So, my sense is that they don’t have to be perfect, but there has to be consequences when those imperfections arise because, just like when you buy a product or a service and you have an expectation that it’s going to work, if it doesn’t work, you have some recourse for a warranty. And I do know that there’s some mechanisms in place that are called buffer pools where you can tap into if in a reversal case, or there’s even insurance that can arise. My sense is that those mechanisms are not widely understood, and they’re often not in the

And maybe they don’t always exist. I don’t actually know. What’s your sense about that? When these failures do occur, do you feel like the systems are in place actually to nonetheless sort of compensate for the losses? Or are there still cases where those losses occur and then you’re just at a loss?

Alexia Kelly:

Yeah, this is one of my favorite questions and most important issues facing us. And I’ll take baselines and permanents separately because they’re two distinct but related issues. The permanent one is interesting because as you know, we actually have quite extensive systems in place to manage reversals and address the risk of reversal and storage. And they are not well understood. I think they don’t get talked about enough and people really don’t understand how they work.

A fundamental principle of almost all crediting systems is this notion of conservativeness. So almost always, you’re going to be the most conservative number across the board. And so, what we find is often projects are already pretty significantly discounted even before they get to issuance and the credits are out there. So, there’s this whole additional layer of protection that the system has built in that the public really never even sees because it all happens before the credits are issued. As you’re looking, so say I have a forestry project, I’m going to be applying my methodology. I’m going to be bringing my experts to collect the data. They do it all through statistically validated sampling systems, right? So, they’ll go out and they’ll do random plots and they’ll send people out into the middle of these woods and they have to go out and do direct measurements.

This is being helped and accelerated a bunch by remote sensing and AI, but we still do on the ground verification. So, it will often take a week to cover an entire project, and they send scientists out to go do direct measurement of the trees and then use really complicated sort of stratification systems in order to make sure that we’re getting a statistically valid representation of the carbon stored in that particular project. That then gets run through this whole process and you have a series of discounts that are applied before you even get to the credit issuance. So, there’s conservativeness built into the system there. Then after issuance, you have long-term monitoring requirements where farmer foresters will sign up and say, look, I’m signing up legally to make sure that this carbon stays sequestered in this particular project area for X number of years. And it varies. You have to figure it out, and the challenge here is that what we’re trying to do is design a system that delivers real atmospheric benefit.

And there’s been a raging debate in the academic and scientific community for a very long time about, we like to say as long as it matters, how long does carbon need to be stored in order for it to have a real meaningful atmospheric impact? And the answer actually turns out to be not very long, right? So at this point, particularly given where we are with CO2 loading in the atmosphere, anything we can do to store and defer the release of carbon has an atmospheric benefit. How much atmospheric benefit, right, is the thing that’s in question? And there’s the additional complexity of if I’m using that credit to compensate for a fossil-based emission somewhere else, then you need to think about the equivalent impact.

So, there’s two parts to permanence that you have to think about as we’re thinking about this system design. So, it gets very complicated. The way the standards have dealt with this is that they, in addition to the discounting and conservative calculations, also have what are called buffer pools. So, post issuance, they’ll look, and you are actually required to basically take a portion, and it varies across standards. It’s anywhere from 5 % for the jurisdictional level programs down to as much as 30 % 40 % of your total credits must be set aside in case there is a reversal. If a reversal occurs, then there’s an extensive process that they go through to actually directly measure the amount of carbon that was released from the project. And then they will go back and cancel an equivalent number of in the buffer reserve to make sure that the atmosphere is made whole and that the credit

And you’re not allowed to issue more credits until you’ve paid the buffer reserve back. So, it acts basically like an insurance mechanism. There’s lots of debate about how big those buffer reserves should be? What types of credit should be in them? What are the rules around administering them? Should we be looking at a two to one cancellation? Like there’s a lot of pieces to unpack as we design that system, but I believe that having nature in these markets is not optional. We must use the power of nature, which is our original carbon removal machine. Trees and forests and wetlands and soils play just an essential role in regulating the climate and in helping us fight climate change cost effectively and efficiently. And so, we’re going to need to take a system level approach to addressing this challenge. And I believe we can do that.

I actually think that we have both science and the system capacity to set up really robust safety nets so that if reversals do occur, we can still make the atmosphere whole because that of course is the most important objective of any of these systems.

Mike Toffel:

Is there transparency around the levels of these buffer pools, like an annual report that would declare these as assets and the usage of them?

Alexia Kelly:

So, the treatment of assets is a whole separate ball of wax, but generally, no. And that was actually one of the things that ICVCM really came in and did was to establish minimum transparency requirements across the board. actually, co-chair our continuous improvement work program on permanence. And one of the things that we’re looking at is doing buffer reserve stress testing. So, we’re working with the standards to go in and say, OK, guys, let’s look at how you do this. Because I have to say, you know, the standards get a lot of criticism for this, but the fact of the matter is nobody else cared or was paying attention when we were setting this stuff up the first time. And so, they’ve had to be judge, jury and executioner, you know, in terms of managing and building this infrastructure to make sure that we can deliver long-term atmospheric benefit and assurance.

And so, there’s a lot of really exciting conversations happening right now about, what would a global permanence approach look like? And how could we think about these types of systems in a more comprehensive way so that you don’t have these small nonprofits trying to stand up these systems and manage this big problem by themselves but actually think about it more holistically from a market wide perspective. So, I’m expecting that there’s going to be a lot of really exciting and interesting progress in this set of topics in the next couple of years. But we still have a way to go. There’s the system is not where I think any of us would like it to be if you asked the people who work in the market today.

And this I think is just a fundamental question that we have to ask ourselves is, know, is it better to have something that is working well, but maybe not perfectly, but actually doing things in the real world or which we can easily do, should we wait until we have the perfect design, and we’ve got it all figured out and we talk to each other about it for another 20 years and then maybe we set something up once we’re sure that we have absolutely every T crossed and every I dotted. I’m very much, especially after working in the private sector for so long in the camp of it is much better to be doing things even if they aren’t delivering 100 % of what we need them to be doing because we’re in a climate emergency. And I want to throw water on the fire, not debating the color of bucket of throwing the water.

Mike Toffel:

Yeah, and even if every drop of that water doesn’t reach the fire, the majority of it is doing so, and there’s these mechanisms to reroute those drops, it sounds like.

Alexia Kelly:

And I do just have to say also, the thing about the markets and the reason why I’m still like here and doing this work is because A, I don’t think we get to where we need to be in terms of transforming capitalism without putting a price on carbon. And that’s what carbon markets do. And B, I have never, ever, ever seen a better instrument, not even in all my years working with USAID and managing hundreds of millions of international assistance dollars.

I’ve never seen a better system for getting money from where it is today to where it needs to be in the global South and to frontline communities and ecosystems in particular. It is one of the best, most transparent, most rigorous systems we have for getting that money deployed into the things that really, really matter today for helping us address climate change and in addressing, you know, historic environmental inequity and providing support to frontline communities.

And I’ll just give one super-fast anecdote on that. When I was at Netflix, there was due diligence in our project that we were buying for our portfolio. And it was this amazing rainforest for dry lands protection project in Kenya. And there’s one paragraph, like one line in their kind of spec sheet that caught my eye. And I asked about it. And they said, it’s, the headwaters of a major river. And I asked in the interview about it, and they said, yeah, that’s the, actually is also the headwaters of the drinking water source of a city of a million people down river.

So, these projects like that wasn’t quantified. It was literally just a line in the report. But the fact that this forest was providing drinking water for a million people in an area that has severely affected by drought is just an example of what we call core benefits, not co-benefits of these projects and the climate resilience and adaptation benefits that they deliver along with biodiversity and economic justice and financial transfer. So, you know, we’re big believers in the power of these markets because we’ve seen them work and we’ve seen firsthand the impact and benefits that they deliver to people.

Mike Toffel:

Not to mention the whole point of carbon pricing is to try and reduce carbon at the most efficient way possible system-wide. That’s why economists are so in favor of this as a regulatory tool and the absence of regulations, borrowing that same logic in these, in the voluntary market; that’s the goal which I think often gets overlooked.

Alexia Kelly:

It very much does. And I think in this debate too, it’s getting a little lost. We talk in the net zero conversation, there’s a big focus on how do we drive supply chain decarbonization, right? Like we want companies that have a net zero target to reduce their emissions, which is totally fair. That’s true. We do want them to reduce their emissions. We also want their money to fund all of the other mitigation that is often, actually almost always substantially lower cost than what it’s going to cost them to reduce their emissions internally, particularly in the United States.

And so, balancing that in net zero kind of rules is really important and one of the big debates we’re having right now is how do we do that so that we can keep companies focused on the hard work of decarbonizing their actual operations, right? Getting electric vehicles in, deploying energy efficiency, buying renewable energy, doing all of that really important work, while also mobilizing the money we need for nature and all of the other core of carbon removal and building that whole ecosystem and set of technologies. It’s all going to take money, and we need to be doing it all simultaneously and as quickly as possible.

Mike Toffel:

So let me pivot a bit. Now, you mentioned these markets have been around in one form or another for quite some time. And more recently, we’ve seen the injection of all sorts of interesting data revolution pieces here, whether it’s the satellites collecting CO2 and methane data, including I think methane sat you guys were involved with. EDF has just recently launched a satellite, which we did an episode on, to monitor methane emissions.

There’s all this new data; there’s machine learning and AI technologies out there. Digitization is just really like the force that and climate change seems to be like two of the next gen, like disrupt everything forces. How do you view this revolution affecting the voluntary carbon market?

Alexia Kelly:

Yeah, great question. I’m so excited about what remote sensing, AI, machine learning, and internet of things is going to enable us to do to build really excellent monitoring reporting and verification systems. We call them MRV systems. And it’s the whole system you build to make sure that the thing you’ve done is actually doing what it was supposed to do. So High Tide has invested heavily in remote sensing capability and building out that ecosystem of both technologies and support nonprofits that are doing work. So, we are an early investor and instrumental in getting Carbon Mapper up and out, which is a compliment to EDF’s methane set. Carbon Mapper does very precise measurements of super emission sources of methane around the globe.

And these emission sources were going undetected because we didn’t have granular enough data review technology. So, we’re very excited about what that transparency is. And having philanthropy come in and fund this work means that this data is available to the public. So, there’s been a lot of work that’s happened in the remote sensing and satellite space because it’s very expensive to do, right? These satellites cost tens of millions of dollars each. There’s been a lot of that that’s been built behind proprietary paywalls.

And so having philanthropic dollars coming in means that we get to build the things and then make them publicly available, which then, of course, unleashes a whole new world of accountability and transparency. And we’re seeing that it really plays out in the carbon markets in big ways as well. So, what happened a few years ago as some of these new satellite technologies were coming on board, as folks were able to look at and see at much lower cost what was actually going on in a lot of these project areas. And in some instances, they found that we were underestimating the amount of carbon that was being stored. Those stories don’t tend to make headlines. What does make the headlines are the instances, and these also existed, where we overestimated the amount of deforestation that was happening.

And that, I think, it’s a wonderful thing that we have all of this new data and information, but it also means that it’s caused sort of a reset in the market in some ways, because when we wrote these methodologies the first time, we didn’t have any of that information available. And so, it’s caused, I think, a revolution in the way in which we are thinking about and making measurements for carbon projects and overall, incredibly exciting ways. I feel so much better knowing that we have this data and information because it enables us to say with much more precision and accuracy, this is working and this isn’t working. And that’s essential to building out this entire system.

So, I, and you know, I’ll also say the internet of things. So, often, particularly in developing countries, you’ll have a bunch of cook stoves, right? You’ll have thousands of cook stoves distributed over a bunch of countries. We know there’s real environmental and atmospheric benefits to those projects. But precisely measuring exactly the amount of wood that’s going into the cook stove on a daily basis in places that often don’t even have electricity is extremely challenging, right? So, we rely on statistics, which we should continue to do. We rely on sampling and survey technologies. But we can also now put sensors on that are just automatically pinging data all the time so that we can measure much more precisely and consistently; the atmospheric impact of these things and what’s really happening on the ground.

So it’s hard to overstate the importance of these technologies for enabling us to build out that really comprehensive MRV system that’s also going to enable us to help build better permanent systems overall, inform how much should be going into buffer reserves and do a much better job of setting baselines, which as you mentioned earlier, is that counterfactual projection into the future of what would have happened in the absence of the project. And so, we can get much better historical data at much lower cost now. So, we’re really excited to see this set of technologies come to fruition and it’s going to have huge impacts on the market moving forward.

Mike Toffel:

Got it. Let’s just dive in for just a second on the cook stove example, because I want to provide a little bit of background or seek a little background. So typically, cook stoves projects involve someone financing the deployment of cook stoves to enable folks, in some cases, to, for example, use less wood or use wood more efficiently in cooking. And so, the idea is it reduces deforestation. It still allows people to cook their meals.

And the reduction in the deforestation is the carbon credit claim and the financing that these cook stoves wouldn’t be available without carbon financing. That’s the additionality claim. And the issue, as I understand it, is like the measurement question, which, for example, is, well, if we give out 1,000 cook stoves, are all 1,000 of those being used every day? Are some of them maybe breaking and therefore like only 900 in year two are being used? And then maybe some people use two of them.

And so, there’s actually, they’re getting twice as much cooked. So that’s good for the family. But they’re still using the same amount of forest, for example. So, there’s all these different question marks in the deployment. Is that the type of thing? And you’re saying with technology, we can perhaps identify the extent to which these cook stoves are being deployed to take away some of the assumptions that one would otherwise have to do or the manual census every year for X years to sort of check in on this. Is that what we’re talking about?

Alexia Kelly:

That’s right. Yeah. I think the cook stove is actually an interesting example because as you noted, a lot of these impact numbers are tied to the relative deforestation rates around the project area where people are collecting the fuel wood from.

And there’s been a lot of debate about what is the right number, how do you measure it? It’s obviously enormously variable depending on cultural, geographic, know, a wide range of conditions that are in place all over the place. And so, there’s a new model that’s being developed using remote sensing data in order to do a better job of calculating the net impact of cook stove projects in surrounding areas. And so, it’s just a good example of how new technologies are enabling us to do better and more accurate measurement. But it also is causing corrections in the market because the data we had before wasn’t as good as the data we have now. And so, most of the standards are now in the process of rewriting the rules to reflect and accommodate this new data that we have. Does that mean that everything that came before is garbage? No, it doesn’t. But it does mean that we are now even better at more accurately measuring what’s happening on the ground.

Mike Toffel:

Great. OK, so I want to pivot again. You had mentioned earlier in your intro, of course, that you’d worked for the State Department. You’d mentioned that you’d sort of helped negotiate the Paris Agreement. And so, I want to take advantage of that expertise that you bring to talk a little bit about the compliance markets, which are working in parallel to these voluntary carbon markets, and just to sort of explore the use of carbon credits in that market, which I think date all the way back to the Kyoto Protocol in the late 90s and the CDM or Clean Development Mechanism, which set up some rules for how you can, in countries that didn’t themselves have to reduce, they could nonetheless reduce and sell the benefits of that to the countries that had to reduce, which sounds a lot like a carbon credit, but maybe at the more national level, with the of the endorsement and backing of the UN, which again is different from the voluntary carbon market.

So, give us a brief history of carbon credits in the compliance market. And then all the way to today, where most recently in Baku, the most recent COP, as I understand it, there was finally some real precision around, you mentioned Article 6 of the Paris Agreement, which sets up some rules again for going above and beyond regulatory requirements using mechanisms that seem a lot like the carbon credits we’ve been talking about.

Alexia Kelly:

Yeah, absolutely. And it’s important to note that the unit of measures in carbon markets, regardless of whether they’re in voluntary or compliance systems, is the same. So, it’s one ton of carbon dioxide reduced, removed, or avoided, and typically measured in metric tons. And so, the difference comes in the methodologies, typically. and the issuing bodies for the credits. And so, one of the disadvantages of the fact that we haven’t had a global system in place so far is that there is no kind of one decider on what quality looks like in the market. So, we have this patchwork of both regulatory and voluntary standard setting bodies that have emerged over the course of the last 20 years to say, this is how you measure a ton of carbon.

These are the rules under the UNFCCC, the United Nations Framework Convention on Climate Change, which is of course where we negotiate international agreements related to climate change, under the UN has been working for almost 30 years on trying to broker an international global deal to address the climate crisis. I joined the UN process in 2010 when I joined the beginning of the Obama administration and we had just come out of Copenhagen where the US came and said, we’re back.

But the system we built under Kyoto that we helped architect, we didn’t really like so much anymore because it differentiated between developed and developing countries. And in order to get a deal through Congress, the US felt that it needed to, we needed to be on equal footing with China and India and some of our economic competitors or we were never going to get a deal done.

Mike Toffel:

Right, because those were categorized at the time as developing countries which didn’t have obligations unlike, for example, Europe and the US.

Alexia Kelly:

Correct. So, under Kyoto, global North countries, the US, the EU, Australia, Canada had emission reduction obligations that were quantified, and the global South did not. Which look, there are good reasons for that. The global North is responsible for most of historic emissions, and it’s only been until the last decade or so that the emissions profiles have flipped pretty dramatically and China and India, South Africa have all emerged as large, globally important, and impactful emitters.

So, we came to Copenhagen and, after Copenhagen, and basically said, we need a new deal. We’re going to have to renegotiate everything because we need developing countries. We know your emissions are increasing, and we need developing countries at the table and on equal fitting with the US. And so, it took us six years, but that’s what the Paris Agreement is.

It is a normative system that enables us to bring all countries to the table. In order to get all countries to the table though, what it basically meant is that the countries demanded that they were able to write their own rules by and large for what they wanted to do domestically. And so, we have these things called nationally determined contributions, which is where every country kind of sits down and says, this is what I’m willing to contribute.

These are the targets I’m setting. These are the coverage requirements. And we have reporting and transparency about that at the UN. We also have a court of public opinion where you come and you bring your report, you have this thing called a biennial report, you bring it to the UN, you stand up in front of the UN, you report on your progress and you defend it and countries ask you questions about your report.

What are you saying? What are you doing? How is this policy working? What happened here? Why did you do that? But that is now the kind of international architecture and system we have emissions training has always been a contentious part of the UN system as well. Historically, under Kyoto, there was a bidirectional, it was one-way flow. There are the clean development mechanism and a variety of other instruments, but mostly the EU, which was really the only country that had a significant carbon price and obligation, bought from developing countries who generated credits and sold them through a UN administered mechanism called the Clean Development Mechanism.

Because we are now in a world where all countries have emission reduction obligations, accounting gets a little more complicated and so do the kind of flows of credits and the potential flows of credits. So, there’s three articles or three paragraphs under Article 6, which are the emissions trading provisions of the UN. Article 6.2 covers bilateral agreements. Its countries now are able to sort of write their own rules for how they want to do emissions trading.

If two countries want to cooperate on a bilateral basis, they can do that. They set up their program. They set up their systems and they report it to the UN on this is what we’re doing. Article six, four is the centralized UN body. So, we have a centralized UN body that works a little bit like the CDM did where there is a decision-making group that sets the rules, approves the methodologies and issues the credits supported by the UN secretariat.

And it’s called Article 6 supervisory body. And they are responsible for writing and approving the rules under Article 6.4. So that’s for countries that would really like to have that UN oversight and want a centralized and administrative, you know, it’s like a system that’s all kind of taken care of for them. That’s what 6.4 is. And then the third paragraph is 6.8, which are non-market-based approaches, which is in there at the assistance of countries that don’t believe in market based mechanisms. I wanted to have a note in there. So that’s the story about over a beer. The important ones are really 6-2 and 6-4.

Mike Toffel:

Great, so what’s the recent. What happened in Baku? Because these paragraphs were in from the beginning, or are these paragraphs new? Yeah, okay.

Alexia Kelly:

Those are the original paragraphs. And then what we needed to do was write all the rules for how you did that because 6.4 just says we’re establishing this body. And then you had to go out and write all of the what we call modalities and procedures, all of the rules for how the body was going to work, who was going to sit on the body, how many times was it going to meet, who was going to be responsible for making the decisions, what were the criteria that you’re using to make the decisions, like all of that had to be written up. And that ended up taking 10 years.

So, they worked for the last nine years. So, what happened in Baku that’s so significant is that we finally agreed to the rule set. So that means that in the next year or so, we should start to see credit flowing through this UN system as methodologies get approved and as projects and pipelines start to come in. So that’s net-net a great thing because it hopefully means that we’ll get that money going again into mitigation globally.

But we’re going to need to watch it as well because the thing I personally don’t like about the Paris Agreement is that it is normative, and it is largely voluntary, and it doesn’t have as much oversight as I would like of stuff that’s happening in different parts of the world. We rely very heavily on transparency. So, it’s going to be important for civil society and others to keep an eye particularly on 6-2 and these bilateral agreements that countries are writing because here you have two parties that are both interested in potentially inflating baselines or creating credits because it’s going to make it cheaper and easier for them to meet their international commitments.

So that’s a place where I think folks are going to need to keep a close watch and that we’re certainly watching closely, and we’ll be seeking to advocate. I think it’s also a place where the ICVCM is going to help a lot because we are becoming truly a global benchmark for both voluntary and systems about what right looks like and what good looks like. So, making sure that we push the whole world towards that threshold is going to be incredibly important in the next few years.

Mike Toffel:

Yeah, a very interesting enmeshing of the voluntary institutions and the compliance markets that are emerging. OK, so before I let you go, let me ask you the same question I ask all of our guests before I let them go, which is advice. So, for folks who are listening to this podcast, some might be interested in learning more, maybe thinking about career opportunities in the voluntary carbon markets or maybe now in the compliance carbon markets, now that there’s some interesting evolution going on – What advice do you have for them as far as podcasts or conferences or websites or newsletters, whatever it might be?

Alexia Kelly:

Yeah, but well, before I give you my quick list, I will say I really encourage people to go work in government. Go work in government. You learn a tremendous amount. Our civil society and government institutions are really fragile right now. And whether it’s the local level, the federal level, we need good people filling those jobs. And so, it is the best way to develop your career I can possibly imagine. And its’ incredibly important work for keeping the fabric of our society knit together. If you want to get more involved in carbon markets, there’s lots of good resources out there. So, there’s the Navigating the American Carbon World Conference that happens every year in Los Angeles in March.

That’s hosted by the Climate Action Reserve and the International Emissions Trading Association. The International Emissions Trading Association is an industry association that is basically the carbon market. And they host a number of conferences as well that are quite good. Then if you can, go to a COP or go to the UN because that is where a lot of these conversations end up happening. So that’s a really excellent place to learn more as well.

Mike Toffel:

Great. Terrific. And you’re launching a podcast?

Alexia Kelly:

I am launching a podcast, yep, just in the next couple of months. It’ll be called Navigating Net Zero and we’ll cover both corporate decarbonization perspectives as well as really dig into some of these meaty issues that you did such a great job raising here today, Mike, in terms of how does the carbon market work, what’s happening, where is it going, and how do I stay abreast of the rapidly moving and evolving spaces.

Mike Toffel:

Well, I look forward to subscribing once that’s launched. It was a wonderful conversation, Alex. Very wide-ranging and I’ve learned a lot. So, thank you so much.

Alexia Kelly:

Thanks so much and thanks so much for having me today. This is great.

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Science Storytelling with TILclimate – Farm to table, with a side of fossil fuels

Climate change stories can be complex, especially when they’re full of technical descriptions and lists of numbers. But when these stories are linked to our daily lives we can understand the issue more clearly. So I had to laugh when listening to this episode of the TILclimate Podcast as I happen to be a fan of tortilla chips — artisan style, of course — and this story highlights how fossil fuels are part of the journey, from start to finish, of tortilla chips traveling from the farm to store.

While this narrative involves a specific food product, you can easily see how the process applies, with minor variations, to a host of other items that end up on our table. In this case, we have farm machinery, giant fans, trucks, fermenters, grinders, dryers, fryers, fertilizer, and even the plastic bag the chips come in.

Instead of people, the cast of characters includes objects, chemicals, processes, but we get a visual sense of how everything works as raw ingredients are grown, processed, packaged and delivered. Instead of a, “This is what climate change is doing to the planet” story, we have a, “Behind the scenes look at how the things we consume contribute to the problem of climate change” type of story.

There are no villains here, no finger pointing or blame, just a real life example of how a food manufacturing process works. And since there are many steps in the tortilla chip supply chain, finding a more sustainable solution involves solving a number of problems.

If you’re working on a personal story that’s founded in science, think about how your technology or research can be explained within the context of a story that your audience can relate to. And if you need help creating and presenting that story, reach out, I enjoy working with scientists who are making an impact!

Transcript

LHF: Hello, and welcome to Today I Learned: Climate from the Massachusetts Institute of Technology. I’m Laur Hesse Fisher.

If you’re like many of our listeners, you might be wondering: okay, so the CO2 from burning fossil fuels is warming the planet, right? So why haven’t we just gotten rid of all these fossil fuels already?

Because we live in a world that’s currently dependent on fossil fuels, yet a lot of that dependence is invisible to us. So we collaborated with TABLE, an international coalition of universities that helps the public understand our food system. Their recent podcast miniseries is called Fuel to Fork, and it explores all the many ways that fossil fuels are involved in putting food on our plates.

And today, we’re going to get a glimpse into the hard work that is happening to eliminate pollution from the food system—and in doing so, explore the very real ways that our food now depends on fossil fuels.

Even to produce the simplest thing, like a tortilla chip.

JC: I love tortilla chips. In fact, I had some on the weekend, and they were very tasty.

LHF: That’s Jennifer Clapp.

JC: I’m a professor and Canada research chair in global food security and sustainability at the University of Waterloo in Canada. I’m also a member of IPES-Food, which is the international panel of experts on sustainable food systems.

LHF: She’s here to help us follow the journey of a tortilla chip from farm to grocery store, taking note of all the ways fossil fuels are used along the way. So let’s get started.

JP: Well, tortilla chips have relatively few ingredients. They’re made of corn, or in the rest of the world, it’s called maize.

LHF: Here in the U.S., we have over 90 million acres of cornfields. If that were a state, it would be the fifth largest, just barely behind Montana. And if you took a drive through this great state of corn, the first thing you might notice above the vast, waving expanses of green are the machines that tend the corn from planting to harvest.

JP: Farm machinery typically runs on Diesel fuel. And that’s the machinery used to plow the fields, drill the seeds, spread the fertilizer, spread the pesticides, spread the herbicides. Also for harvesting crops, big machinery is used, you know, combine harvesters and other kinds of machines that thresh the grain.

LHF: It’s probably no surprise that these great machines need fuel to run. But what about the quieter parts of a corn farm—like the barns?

JC: Corn has a lot of moisture in it. It’s a heavy crop, and to store it properly it needs to be dried. And farmers typically use giant fans in a barn to dry out the corn and typically heat those barns with propane fuel.

LHF: The two things we’ve mentioned so far—the farming machinery, and drying the crop—make up about half of the fossil energy use on a typical corn farm. There’s one last big chunk of emissions that we’re going to come back to a little bit later in this episode.

For now, though, we’re packing up our corn for sale.

JC: Commodities like corn do travel around a fair bit. If it’s trucked, it’s typically using diesel fuel. And also, if it’s shipped, it’s definitely using oil.

LHF: Those fossil fuels get our dried corn to a factory, where it will be turned into masa, the delicious dough that makes a tortilla.

JC: And what it involves is soaking and simmering, like cooking, these dried kernels of corn for up to 12 hours. And that process is called wet milling.

LHF: For our tortilla chips, this is almost the end of the line: the masa from the wet mill is ready to be shaped, baked and fried. Other corn products will keep passing through more screens and grinders and dryers and fermenters, on their way to becoming things like cornstarch, and corn syrup, and even the ethanol we add to gasoline.

There isn’t good recent data on this, but back in 2001 the US Energy Information Administration did a study of corn wet mills and found that they used 15% of all the energy in, not just corn, but the entire U.S. food industry.

JC: So that gives you a sense of just how energy consumptive it is.

LHF: When you hear about “ultra-processed” foods, this is what it means: the ingredients go through a whole bunch of machines to break them down to their proteins and fibers and oils and such. And it tends to use a lot of fossil fuels—and be less healthy for us, too.

With our tortilla chips, the last machine would be the fryer that makes them nice and crispy and snackable. But there’s one more step before they’re shipped to the grocery store, and that’s packaging.

JC: In my local community I can buy corn chips that come in a paper bag, which really makes me happy. But most corn chips that you’re going to find in a grocery store shelf are packaged in plastic.

LHF: And that plastic is made of—do you know? It’s oil!

Yeah, our food system doesn’t rely on fossil fuels just for energy. Tons of stuff—packaging, farm equipment—is also made of fossil fuels.

JC: You might have seen large sheets of plastic covering farm fields that sort of keep in moisture and keep temperatures warm in the soil, or covering a greenhouse, Herbicides, pesticides; they’re all fossil fuel sort of oil based chemicals. So when we think about fossil fuels on the farm, they’re just, they’re everywhere.

LHF: Remember earlier, when we found that the farming and drying machinery added up to about half of a farm’s fossil energy use? Well, most of the remaining half comes from just one of those fossil fuel-based chemicals alone.

JC: The fertilizer use is probably the biggest use of fossil energy when we’re talking about growing corn.

LHF: For as long as there’s been farming, people have been adding fertilizers like manure and wood ash to soil to revitalize it.

JC: These products really started to be used much more frequently after around the 1840s, when scientific developments led to an understanding about the importance of nitrogen, phosphorus, and potassium as key nutrients that plants need for better plant growth.

Phosphorus and potash are actually today typically mined from the earth and processed to make fertilizers.

LHF: But the third nutrient, nitrogen, is trickier: there’s no nitrogen rock that we can mine. On the other hand, there is one very abundant source of nitrogen very close to hand. It’s in the air we’re breathing. Earth’s atmosphere is almost 80% nitrogen gas.

JC: And scientists knew that nitrogen was in the air. They just didn’t know how to capture it and make it into a physical, usable form that could be applied to soil.

LHF: And then, in the early 1900s, two German chemists, Fritz Haber and Carl Bosch, figured it out. If you react nitrogen with hydrogen, they mix to make NH3, also known as ammonia. And this became the main ingredient for modern fertilizers.

The catch is that the hydrogen comes from yet another fossil fuel: natural gas.

JC: So the Haber Bosch process really changed everything because people didn’t have to worry about where the nitrogen was going to come from to fertilize crops. And the use of synthetic nitrogen increased massively.And what that’s meant is that more crops can be grown. More land around the world can be cultivated for agriculture, because the nutrients can be continually replenished.

LHF: And on that land, humans are supplying a regular stream of nitrogen, provided mostly by natural gas. Where, unfortunately, it continues to impact the climate in yet another way.

JC: There’s been a tendency to over-apply fertilizer. Just as kind of like an insurance policy that farmers want to be sure that they’re putting enough on the field to ensure plant growth.

But not all nitrogen that’s put down in the field is taken up by the plant. And then soil microbes eat up the nitrogen, and it converts it into a gas called nitrous oxide, which is more damaging than carbon dioxide when we’re talking about climate change. And corn uses a lot of fertilizer, so it has a lot of nitrous oxide emissions.

LHF: Fertilizer is by far the biggest way that humans create nitrous oxide, this highly climate-warming gas. If you add both the manufacturing process and the nitrous oxide, fertilizer has the same impact on the climate as a major country—in fact, it contributes as much to climate change each year as Japan does, which is the world’s seventh-largest climate polluter.

JC: So all in all, the fertilizer industry is pretty significant.

LHF: Okay, so what do we do about all this? You might ask: is it even possible to have our tortilla chips without the climate pollution?

JC: Can I imagine a fossil fuel free bag of corn chips? I think, in this current world that we live in, that’s a bit hard to imagine, given all of the places in the whole production process that have relied on and continue to rely on fossil energy.

LHF: Let’s take farming machinery for a moment. You might say, well, couldn’t we just run these machines on electricity, like switching a gas-powered car for an electric car? And, yeah—we probably could.

JC: But it’s not straightforward. Because a tractor has to have a lot of horsepower, especially for plowing, especially for these sort of harvesting and threshing activities.

LHF: That means that an electric tractor would need to hold a lot of energy in its battery. For the heaviest equipment like combine harvesters, the industry is still waiting on more powerful motors and batteries to hit the market—and to be affordable.

But don’t throw up your hands. There is a lot we can do right now. Like in the drying barns, which can be heated electrically, and the wet mills that can switch to clean power sources. Or what about the problem of overapplying nitrogen? That’s no good for anybody who cares about our climate—but it’s also especially bad for the people buying all this fertilizer that just ends up being wasted.

JC: Because it’s a big cost for farmers. And the big companies are all investing in digital technology that can analyze the type of soil and its fertility, and then provide advice to farmers that says you should only put this much fertilizer in this part of your field. Maybe you want to use a little bit more in that part of your field.

LHF: There are also these things called “slow release” fertilizers, which are coated in a slow-dissolving plastic so all the nitrogen doesn’t get dumped on the field at once. Or, could we produce the nitrogen our corn needs without using natural gas? There are emerging processes that use clean electricity instead, or even engineered microbes in the soil. All of these ideas are being actively pursued right now—and also studied to see what kinds of unintended effects might arise if we start doing things like treating our soils with plastics, or using a lot of energy for AI-powered digital farming tools.

So today, we wanted to highlight the often hidden fossil fuel use in our food system—but we also wanted to highlight the often-invisible solutions that are happening. Because as more and more of us get activated and equipped to tackle this issue, researchers, innovators, investors, and folks working across the food system get creative, and solutions like these become possible.

JC: So it’s a big ask to say, okay, throw that model out the window and start from scratch with something else. But there are models of other things that can work, such as agroecology, which is using nature’s own processes to provide the fertilization of soils by growing different crops next to each other. It’s a big change. And so it’s not going to happen overnight.

But I always think about the fact that the way that we ended up with the agriculture we have today took about 200 years. Farmers did adopt synthetic fertilizers. They did adopt hybrid seeds. You know all of the aspects that we think of as conventional farming today were at one point new technologies. So we shouldn’t think necessarily that farmers are going to be resistant to change. But that change has to be tangible for them in terms of the benefits, and it has to be easy, and it has to be affordable.

LHF: And that’s harder than just saying, keep the fossil fuels in the ground. But in the end, this hard, steady work is what it’s going to take to have a clean economy that offers us a good living and the things that we need. And even the things that we like, like a bag of chips.

That is our show. But if you’re interested in learning more about fossil fuels in the food system, I invite you to check out the entire Fuel to Fork miniseries from TABLE, in collaboration with IPES-Food and the Global Alliance for the Future of Food. Just look up Fuel to Fork on Apple Podcasts, Spotify, or wherever you get your podcasts.

And hey, you can also look up TILclimate there and follow us—there are lots more episodes to brush up on your climate knowledge. Or get in touch and ask us your climate change questions! Email us at tilclimate@mit.edu, or leave us a voicemail at 617 253 3566.

TILclimate is the climate change podcast of the Massachusetts Institute of Technology. Aaron Krol is our Writer and Executive Producer. David Lishansky is our Audio Producer. Michelle Harris is our fact-checker. Grace Sawin is our Student Production Assistant. The music is by Blue Dot Sessions. And I’m your Host and Senior Editor, Laur Hesse Fisher.

A big thanks to Prof. Jennifer Clapp for speaking with us, and to you, our listeners. Keep up your climate curiosity.

And if you want to dive deeper into this topic:

  • Read more about Prof. Clapp.
  • For a deeper dive into where fossil fuels are used in the global food system, check out the Fuel to Fork podcast mini-series produced by TABLE, IPES-Food and the Global Alliance for the Future of Food.
  • For detailed data on the sources of greenhouse gas emissions in the global food system, see this scientific publication from the Food and Agriculture Organization of the United Nations. The data is also summarized in this report, and made available in an interactive tool where you can break down emissions by source, country, and type of greenhouse gas.
  • Learn more about how fertilizer is produced and why it contributes to climate change with this Explainer from the MIT Climate Portal.
  • This episode breaks down the use of fossil energy on a typical corn farm. You can find data on this question from the University of Minnesota and Iowa State University.
  • TILclimate has covered related topics in our episodes on farming a warmer planet and what I eat.
  • For an overview of climate change, check out our climate primer: Climate Science and Climate Risk (by Prof. Kerry Emanuel).
  • For more episodes of TILclimate by the MIT Climate Project, visit tilclimate.mit.edu.

[Note: any comments inserted into this transcript represent the views of the author and are solely intended to help other storytellers create personal stories which are more impactful.]

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Franziska Trautmann: Your Empty Wine Bottle Could Help Rebuild Coastlines @ TEDNext 2024

During the week of October 21, 2024 I had the pleasure of attending TEDNext, held in Atlanta. The event is a new initiative from the folks who produce the TED Conference. There were enlightening talks, insightful discussions and revealing discovery sessions. This post is the first in a series highlighting some of my favorite talks from the stage.

In her TED Talk, Franziska Trautmann highlights the power of individual action to create innovative solutions to local environmental challenges. The first problem she noticed was how Louisiana was falling short when it came to recycling glass. The result: about 295 million pounds of glass was ending up in landfills annually. The next problem Franziska identified was the fact that Louisiana was suffering from a coastal erosion crisis. Since glass is made from sand, the logical solution was to turn discarded glass into sand that could be used for coastal restoration.Glass Half Full Founder Franziska Trautmann

To turn their idea into reality, Franziska and her partner founded Glass Half Full, a company that’s diverted millions of pounds of glass from landfills and restored thousands of square meters of wetlands. At just over 5 minutes, her talk is brief, yet clearly highlights the issues, the initiative, the result, and their future plans.


While the talk was top notch, I really wanted it to be longer as there were lots of questions that came to mind: issues around the lack of recycling, the process of turning the glass into sand, alongside how to scale that process, and the nature of the state’s erosion crisis. But that was not to be, as Franziska’s talk was in a session created along with Ignite Talks, which are only 5 minutes in length.

It’s easy to see how this 5 minute talk could be expanded to 15, 30, 45 minutes in length. And that’s not uncommon when it comes to stories that involve social or scientific topics. If this is an issue you’re facing – how to compress a lengthy talk – then study this transcript to see how the main points are laid out in a way that a member of the public can follow and understand.

Transcript

00:04
As a kid growing up on a Louisiana bayou, the boogeyman was the existential threat of my state being washed away with the Mississippi River.

00:16
Louisiana loses a football field’s worth of land every 100 minutes due to coastal erosion. It’s an unimaginably large amount to a kid. But in my lifetime so far, we’ve lost over 600 square miles. That’s more area than New York City, San Francisco, DC and Atlanta combined. It’s due to sea level rise, warming waters, increasingly severe storms and exploration of the oil and gas industry.

00:51
Fast forward to 2020, in my last full semester as an engineering student and over a Two-Buck Chuck, my boyfriend and I lamented over the lack of glass recycling in Louisiana. My state was landfilling about 295 million pounds of glass annually. The bottle we just finished would likely end up in a landfill. It felt like a total waste, and we wanted to figure out how we could get all of this glass recycled.

01:20
The next day, it took a quick Google search to remember that glass comes from sand, and that sand is an increasingly finite resource. We also learned about everything sand is needed for, including toothpaste, by the way. And the last puzzle piece we found was this small, human-sized machine that could crush one bottle at a time into sand, and we jumped into action, setting up a GoFundMe campaign and a pilot project in the backyard of a fraternity house.

01:50
(Laughter)

01:52
Now you might be thinking to yourself, how in the world would two college kids ever be able to make a dent in these problems? And that would be valid. Plenty of people told us the exact same thing. But we didn’t listen, because we knew that no matter how small of an impact we made, it would be worth it. It felt like we could alleviate two problems with one solution: convert the otherwise landfilled glass back into sand and use it in restoration projects across the state. Easy, right?

02:22
(Laughs)

02:25
But we didn’t listen to the haters, which is actually why we named our company Glass Half Full.

02:30
(Laughter)

02:31
But that glass-half-empty mindset might actually be one of the biggest threats we face today. Because climate apathy might be the new climate denial. Meaning that the biggest threat to our environment may no longer be people who deny our part in the changing climate but people who deny that we can actually make a difference.

02:54
Now climate change is happening right before our eyes. It’s terrifying. I’ve witnessed firsthand the severity of rapidly intensifying hurricanes like Ida. But dread, doom and gloom tend to get us nowhere. Whereas hope, combined with action, can be one of the most powerful tools to enact change.

03:15
(Applause)

03:21
Since that late night wine-fueled idea over four years ago, we’ve been able to divert more than eight million pounds of glass from our landfills.

03:30
Thank you.

03:31
(Cheers and applause)

03:34
We quickly grew out of that small, tiny machine and upgraded a lot along the way. We continue to work with over 50 scientists and engineers across the Gulf South. And they helped me learn if this is good-smelling mud or not. But also understanding the interactions of our sand with the plants, animals and even fungi of our region. We’ve also answered difficult scientific questions as well as questions like, can you actually walk on sand made from glass? And I exposed my toes to the internet to answer that.

04:11
In a few short months, we’ll be opening up our new facility, enabling us to recycle the 295 million pounds of glass entering our landfills annually.

04:23
(Cheers and applause)

04:29
And with a combination of biodegradable sandbags and native marsh grasses, we’ve already restored thousands of square meters along our coast, converting open water back into thriving wetlands.

04:41
(Cheers and applause)

04:48
But the key to our success so far isn’t that we had all of the answers in the beginning or tons of money to try this thing out. The key was that we simply started, and we kept going. Somewhere, the belief that we, as individuals, could enact change trumped our doubts. And for us, finding a way to help with a problem much, much bigger than us meant taking that first step. And in our case, it was a step in the sand, in an eroding but once magnificent swamp.

05:22
Thank y’all.

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