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The U.S. waste management industry moves more than 290 million tons of municipal solid waste each year. This is a potential trillion-dollar market, but much of the work still relies on paper tickets, clipboards, and spreadsheets. About 10,000 independent haulers handle a large share of collection and materials transfer in the U.S. In this business, a single truck costs $300,000, and profits depend on efficient routes. Most haulers do not have access to the digital tools that other logistics industries have used for years. Mike Marmo, CEO and founder of CurbWaste, is building a new operating system to change this. His goal is to create the data foundation needed for the circular economy to work. He is a fourth-generation waste industry professional who started his career as a scale operator at a family transfer station in New York and sold a hauling business in 2021. Since then, he’s built CurbWaste into a platform serving more than 150 haulers in 40 states. Its CurbPOS system for transfer stations tracks inbound and outbound materials with scale integration. It generates automated LEED diversion reports and Recycling Certification Institute-certified documentation; the per-load, per-material chain-of-custody data that extended producer responsibility programs need, as seven states now require producers to fund and document the recycling of their packaging.
Mike Marmo, Founder & CEO of CurbWaste, is our guest on Sustainability In Your Ear.
Mike made a simple but important point: “Waste is being created when it’s being manufactured.” The waste management industry reflects the economy and could become the base for a circular supply chain that keeps materials in use. Mike compares this to Amazon, which learned about buyer behavior and then built warehousing, freight, and delivery systems around that knowledge. The waste industry can do something similar. By tracking what is produced, where it goes, and where it ends up, haulers and new operators can work together on a shared digital system that gives full visibility of materials. Mike calls this the “waste meter,” and he thinks an AI-powered circular economy could be in place within 10 years. Accenture research estimates that the circular economy could add $4.5 trillion in economic output by 2030, a number supported by the United Nations Development Program. Right now, investment is far below what is needed to reach that potential. CurbWaste is working to build the transparency needed to connect collection and vision, helping turn a fragmented industry into a circular supply chain. To learn more, visit curbwaste.com.
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Interview Transcript

Mitch Ratcliffe  0:00

Hello, good morning, good afternoon or good evening, wherever you are on this beautiful planet of ours. Welcome to Sustainability In Your Ear. This is the podcast conversation about accelerating the transition to a sustainable, carbon-neutral society, and I’m your host, Mitch Ratcliffe. Thank you for joining the conversation.

Today, we’re going to take another dive into the circular economy, this time about how we manage our waste collection and processing systems. The U.S. waste management industry moves more than 290 million tons of municipal solid waste a year. It’s a potential trillion-dollar market, yet much of it still runs on paper, tickets, clipboards, and spreadsheets. Roughly 10,000 independent haulers handle a significant share of American collection and materials transfer, and they work in a business where a single truck costs $300,000 and profitability depends on route efficiency. Yet most of these haulers lack access to the digital infrastructure that other logistics-centric industries adopted a decade ago.

Now that society recognizes the immense value in waste—that it’s not just something to dispose of as quickly and quietly as possible, to manage for profitable reuse in a growing circular economy—the waste management industry is in the midst of a vast upgrade.

And our guest today is Mike Marmo, the CEO and founder of CurbWaste, an end-to-end operating system built for independent waste haulers. Mike is a fourth-generation waste industry professional. His great-grandfather started in the business, and Mike started his career working at a family transfer station in New York. Then he built his own collection and disposal hauling company called Curbside, and when COVID shutdowns wiped out three months of construction-dependent revenue, he pivoted to focus on the software platform his hauling company had built. He sold that hauling business in 2021 and has spent the years since building CurbWaste into a platform that now serves more than 150 haulers across 40 states, from five-truck family operations to 200-vehicle regional fleets.

CurbWaste brings order management, real-time dispatch, route optimization, automated invoicing, driver apps, and e-commerce into a single cloud-based platform. Its CurbPOS point-of-sale system for transfer stations tracks inbound and outbound materials with scale integration, and uses weighted averages by material type to generate automated LEED diversion reports and Recycling Certification Institute certified documentation. In other words, it helps a hauler qualify for environmental incentives that gives contractors and developers defensible, third-party verifiable proof that their construction waste was actually diverted from a landfill. And that, too, creates another economic opportunity.

The per-load, per-material chain-of-custody data is what the emerging extended producer responsibility programs that we’ve discussed many times need, as seven states now require producers to fund and document the collection, sorting, and recycling of their packaging. So if you put this operating system under the circular economy, you start to track the value flow, and that means more value can be recognized and rewarded.

In October, CurbWaste closed a $28 million Series B round led by Socium Ventures—that’s the venture capital arm of Cox Enterprises—bringing its total funding to $50 million. The investment is fueling AI-powered business intelligence tools designed to give independent haulers the kind of data-driven decision making that larger competitors like Waste Management and Republic Services have built in their own proprietary systems.

We’ll talk with Mike about what it takes to digitize an industry that’s resisted technology adoption for decades, how CurbPOS’s materials tracking could extend from LEED compliance into EPR reporting and regional materials flow planning, and whether a network of independent haulers on a shared platform can become a connective tissue for an emerging circular economy supply chain. And finally, what is AI actually delivering for waste operations today compared to the hype we’re hearing?

You can learn more about CurbWaste at curbwaste.com—CurbWaste is all one word, no space, no dash.

So, can a software platform that modernizes independent hauling also help build the data infrastructure for the circular economy? Let’s find out right after this quick commercial break.

[COMMERCIAL BREAK]

Welcome to the show, Mike. How you doing today?

Mike Marmo  4:42

I’m doing well. How are you doing?

Mitch Ratcliffe  4:44

Doing well. It’s a beautiful day here in Southern Oregon, and I know in New York City you’re getting through the snow.

Mike Marmo  4:51

Yes, it’s really cold.

Mitch Ratcliffe  4:53

I want to start off with this question, and it goes back to the fact that your great-grandfather started this business, or started in this business. Walk us through the paper and digital processes that recycling operations have been using, and how CurbPOS changes their day-to-day work.

Mike Marmo  5:07

Yeah. So my family had grown up in this, you know, been in this business. I had grown up in this business. Actually, my first job, I was a scale operator starting at a transfer station. And when I was working there, everything was pen to paper. You know, we used a traditional scale ticket. We would put it through this, you know, the EXP printer.

And, you know, within that first year of really working there, I started to realize how difficult it was and how much manual work was happening. You know, a lot of the requests that we were getting at that facility—it was a C&D facility—a lot of the requests we were getting were for LEED, or for something that was related to a regulatory compliance effort, and to get all that information was fairly difficult. So we, you know, at that point, I really understood kind of where the waste industry was relative to the technology around me and my regular day-to-day life, and when I started a waste company, and then ultimately ended up starting a software company, I really saw it at scale, working with a lot of companies around the country that are starting pen to paper or operating off kind of archaic systems.

And so when we originally built CurbWaste and then the CurbPOS product, which is for the transfer stations and recycling centers, we really hyper-focused on automating tasks and making sure that everything was as digital as possible for aggregation of data. So I think we’re starting to see adoption along the way, and I think the waste industry is progressing, but ultimately, I think a digital experience is necessary. And I think it’s for the future of the industry and for the future of the way that we operate in our waste streams. I think it’s critical.

Mitch Ratcliffe  6:45

When you pivoted from moving trash to selling software, how did that change your view of the system that you’d been working in?

Mike Marmo  6:52

Yeah, so New York, obviously, is fairly unique. We were operating the five boroughs, and there are many limitations, regulatory compliance. It’s very difficult to navigate logistically—you know, so many people, and limited parking, limited space, very tight. So you know, when you’re operating in that bubble, you don’t have a lot of options on how you have to operate. You have to be really, really good and really, really pointed.

But then once we moved into the software space, and we started to see, you know, around the country, how people operate, the term I like to use always is “local,” because it really is. You know, we’re all fundamentally doing the same thing. We’re all picking up garbage. We’re all bringing it to facilities. They’re processing materials. But the way they do it, or the nuances around that workflow, are very different, depending on where you are.

And the example I’ll use is like, you know, you have New York City—again, that’s like a very tight space, limited space, lot of people. And then you’ll operate with a company down in Alabama or Mississippi that has a big urban sprawl, and they have different types of issues, different types of problems. And so everybody’s trying to do the best they can from a service perspective. But ultimately, it really is dependent on where you are regionally. And I think that’s where dynamic software and the ability to be dynamic really provides a lot of value overall.

Mitch Ratcliffe  8:04

The old approach to this business was you had a landfill and you had a certain number of years to fill it, and so you were managing filling a hole rather than extracting value from the waste stream. How have you seen that transition change the focus of the business that you’re trying to support with software?

Mike Marmo  8:21

So I think, I mean, maybe I can take a step back into the history a little bit. To your point, I think waste used to be volume-based. It was very much like, I charge a price per yard, I dump for price per yard. And there was a simplicity in that. But I think it also led to—kind of, the way that pricing was done was, again, very volume, and it was very simple.

When the industry moved into weight and it started to weigh materials—and obviously within that, the kind of correlation of commodities being pulled out and the value in the global supply chain—there was a shift in the industry where some of the waste haulers still were pricing or stuck in a volume-based framework, but the facilities were pricing off of tonnage.

And there was an evolution that happened over time. So what you end up seeing is like, if you order a dumpster, for example, and a dumpster has a certain amount of price and allowable tonnage, and then you’re pricing off a matrix format for additional tonnage—the industry shifted. There was a shift in the way that the industry actually started to work.

So now what ends up happening in that framework is, some landfills, you know, big facilities, certain markets have a lot of land and a lot of sprawl, and they have big holes with long lifespans. Whereas other markets don’t have any landfills, or have many landfills closing because they’re running out of space, and they’re moving to intermodal, or they’re moving to, again, like MRFs. There’s been more focus on bringing materials back into the supply chain. So I think we’re still seeing that shift happen. It’s still moving in that direction.

And I think, again, like I always say, waste is a utility that’s not measurable, and I think that’s the main problem. And in order to do this well, you need to have a unit of measurement, a single point of truth. And so that’s why I think software comes into play. It’s able to aggregate a bunch of data—operational data, but also data that’s related to the material and waste streams—and be able to measure what’s going on, and then be able to make better business decisions and better regulatory decisions on the long term.

Mitch Ratcliffe  10:23

CurbPOS tracks inbound and outbound materials at these transfer stations. When a truck dumps a load, what’s the data capture process, and how granular does it get in terms of the materials that you can classify and identify? And then what does that enable in terms of value extraction?

Mike Marmo  10:38

It all depends. It really depends on the market. Some, it hits the floor and then it just gets, you know, taken out to the next place. Other markets will obviously run it across a belt, pull out commodities. So there’s something measurable that’s happening.

I think, you know, the age of technology now, you can do things like material recognition—AI being able to do material recognition and get components of that. Obviously, the certification bodies like RCI and LEED that are helping to kind of audit and make sure that there’s an evaluation period of whatever they’re saying they did, or whatever they’re pulling out of the stream.

But the inbound-outbound correlation is really what matters. Because when you’re coming onto the scale and you’re getting weighed and you’re putting it on the floor, once it hits the belt, we can then take the outbounds and create that mapping of, okay, this material, amount of material came in that day, this load hit the floor, and then this is what was distributed out. And then we can show you what a recycling rate was. I still think there’s more to be done there. I do think that cameras and AI can measure that when it hits the ground, but I think the industry is moving in the right direction overall.

Mitch Ratcliffe  11:52

Let’s step back a little bit from the industry to, let’s say, a five-truck family operation that’s never used anything except maybe QuickBooks to do some invoicing. What is the actual on-ramp to CurbPOS look like for them? How does it change their business?

Mike Marmo  12:09

Yeah, so I think if you’re a hauler, you’re going to be on the CurbWaste product. If you’re transitioning to be on the CurbPOS product—but really, around implementation, I think that’s actually a natural point where people start thinking about software as a hauler. You know, you really want to be cost-efficient in the early days, and so sometimes software might be out of the price range. But I think as you start to grow, and you’re seeing that incremental growth, what most haulers are looking for at that point is efficiency and visibility.

So what software is able to do—operationally, it’s allowing you the ability to be efficient and to be able to see what’s working and what isn’t, and then it’s also giving you insights into what’s measurable, so that you can keep investing in the things that are working. That’s hard in the waste business overall, but it’s a good way to start.

When you go through change management, change is hard all the time. Like, if you have a process that’s working, and it’s, you know, the kind of old adage, “If it ain’t broke, don’t fix it.” You hit a certain point where you have to make a decision about what you want—what is the motivating factor of the business? So are you trying to grow, or are you just trying to maintain where you are? Most people that are entering business and entrepreneurship are trying to grow. So then it becomes about scale. It becomes about, I need to maximize and focus on the most important thing, and I can’t do everything. And eliminating manual tasks allows you to scale more efficiently.

So you go through the buying process and you find the right fit for the software that you need in the moment of which you need it. But you also need to consider what you can scale into as you grow. And then you go through a process of entering orders, getting training, training the drivers, training the staff, making sure everybody understands how the system works. But then there’s a transition period. We stick with them, we make sure that everything is going the way that we hoped it would go, what the project plan said, and you’re supporting them along the way. But at a certain point, the system is running for you, and then they’re off to the races and they continue to scale.

Mitch Ratcliffe  13:53

One of the major changes in the industry that’s driving this transition is the introduction of extended producer responsibility laws, which require, for instance, you’re measuring material type, the weight, its recyclability, and whether it’s recycled, and getting verification of that diversion from landfill. Was that in your head when you started thinking about developing CurbWaste, or is this an opportunity that’s just sort of emerged conveniently at the same time?

Mike Marmo  14:20

100%. When we got into this, the grander vision was the interconnectivity of the supply chain from a data perspective. So the way I kind of like to normalize it is, you have a generator, you have a collector—a hauler—you have a disposal site, and then ultimately end use, right? But it’s end of life. So does it go back into the supply chain through the circular economy? Does it end up in the hole? Whatever that is. There’s usually that period of time where the life cycle has ended.

So the way we thought about it was, well, where can we focus energy from a software perspective? I view the haulers and the transfer stations and the disposal centers as the core of the data set. So we really want to be hyper-focused on aggregating data and providing value in those areas. But ultimately, the idea was to interconnect the generation piece to the rest of it. So when we started, we really stayed focused on that part—the collector and the disposal. But now we’re starting to migrate into the generator piece, to really connect the data sets. And to your point, show where material is being generated, how it’s being generated, where it’s going, and ultimately where it ends up. That’s the measurement of the utility. That’s the waste meter. And that’s what we’re trying to achieve.

Mitch Ratcliffe  15:31

We’ve had a number of sorting and hauling folks on the show, as well as a lot of other thinkers on this topic of the circular economy. So building on this reality in which you’ve got verification that materials have been moved to a particular place and at a particular pace, do you imagine it’s possible to actually plan regional material flows, to really turn the circular economy on in its full flower?

Mike Marmo  15:55

Yes, I do. It’s a lofty goal. A lot has to happen. But I do believe that that’s possible. And the analogy I like to use is something like Amazon. Amazon was able to understand from a retail component, like, what buyer behavior was. They were able to leverage data around buyer behavior, and then they were able to integrate themselves into the supply chain—the freight forwarding, the warehousing, the ultimately last-mile delivery.

And they do it so well. The reason why you’re able to get something in the same day is because they were able to connect all those pieces and understand the output. I believe that the waste industry can achieve that. And so that was a core part of what we are trying to do. You have to walk before you run. You can’t do everything all at once. And again, this is a business, right? Like, if I sign up a hauler and I can’t run their business, then the workflows—you have to build a foundation before you build the house. But I think the long-term vision is the ability to do exactly what you just said.

Mitch Ratcliffe  17:03

Millions of people come to Earth911’s database to find out what to do with specific materials, and one of the things they’re interested in is getting the right material to the right place, so that it is actually recycled. And what you just described in the context of Amazon, for instance—should we not be thinking about putting everything in a single bin? But could we, in an economically viable way, actually have specialized collection that would produce a cleaner load?

Mike Marmo  17:33

Yeah. I mean, one of the things that I saw as a waste hauler that I struggled with was, we’re making decisions—whether regulatory or whether it’s, you know, just in general—like, if you’re trying to be a good actor and try to do the right things, but it’s not rooted in much data. And so what I tried to say was, well, if we can’t measure it, then how do you action it?

And I think the first step, the first thing that everybody should be paying attention to is, how do we measure this? Like, what are we actually looking at? What is the scope of the effort? I don’t think anybody could tell you that, but I think there are ways to do it. And I think, as you have—we like to refer to ourselves as a system of action. You have to have a single point of truth. And when you have a single point of truth, you can then make action against it. So data is the most important thing right now. Data aggregation is the most important thing.

To your point, you did say something that’s really important that I think gets missed as well, which is, it has to be economically viable. There has to be ROI associated. And so a lot of times, what ends up happening is you get a compliance or regulatory effort that doesn’t really take into account the business criteria, and then people are resistant to it, because the business still has to run—it’s a for-profit entity. We want to take the opposite approach. We want to provide value and find ROI in the haulers’ work. Work alongside them, work alongside the transfer stations, work alongside the landfills. Understand how they’re thinking about their business, and really get down into the KPIs of their ROI, and then funnel that back up to the generators and say, here’s how they make money, here’s what’s valuable to them. How can we work together to make that make sense?

I think there’s a way to do that, and it’s just about visibility. It’s transparency, it’s visibility, it’s getting people on the same page. And working together is really what we need to do.

Mitch Ratcliffe  19:05

So here’s a hypothetical. Let’s say you look to the one organization in the world right now that has the greatest visibility into what’s flowing into homes, and that’s Amazon, like we were just talking about. Could you partner with Amazon to say, we know you’re delivering this much cardboard, this much plastic waste, and so forth into this region, and then plan a hauling solution in response to that?

Mike Marmo  19:29

That’s right. That’s the end goal. That’s probably the last step, the last piece of the puzzle. But that’s exactly what you want to do. You know, waste is being created when it’s being manufactured, right? Like, ultimately, when it starts, at that point is when we know what the waste stream is going to look like. But again, if you have nowhere for it to funnel in, and you have nowhere to measure it, it’s disjointed. You have to have an integratable solution to be able to even do that. So yes, that is the goal. But ultimately, we have to start at the foundational level.

Mitch Ratcliffe  19:58

Yeah. We’re moving to a more planful economy, and there’s a lot to unpack in that idea. Let’s take a quick commercial break. We’re gonna come back to this fascinating conversation. Folks, stay tuned.

[COMMERCIAL BREAK]

Welcome back to Sustainability In Your Ear. Let’s return to my discussion with CurbWaste CEO Mike Marmo. He’s a fourth-generation waste industry veteran whose AI-augmented CurbPOS system automates recycling operations. So, Mike, until recently, the waste management industry has been resistant to digitization. Let’s just put it that way. And there’s a massive change ahead. What do you see in terms of a new generation of leadership and the way they think emerging as this industry grows?

Mike Marmo  20:43

Yeah, I think tech adoption in general runs through cycles, right? You have your early adopters, people that see the value. Usually, that’s someone that understands that they have to differentiate. That’s helping at the market. I was at that at one point—when you’re competing with 200 haulers in New York, you have to figure out a way, right? So tech, for me, was the way that I differentiated myself.

So you start with those, and what you’re really doing is you’re proving the ROI, you’re proving the case. You’re building case studies around, okay, this is providing value in this particular area, but you’re also identifying the meaningful pain points of what they’re experiencing. I think a lot of times, if you talk to a waste hauler, maybe generally they’ll say, like, things are working. But if you really get down into it, pull back the layers, there’s always a pain point. There’s always something they’re trying to solve for.

But when you see margin shrinking, you have to either try to drive net new revenue, or you have to be able to save in a certain area. So then what ends up happening naturally is that people start paying attention and they say, okay, this person is growing. They’re growing 30% year over year. What’s driving that growth? And eventually you get adoption. In that way, you get that mass adoption. But some people don’t want to take the risk. They want the other people to take it first and have that proof point. But then it kind of accelerates, and that’s when you start to get into that hyper-growth, hyper-adoption phase.

I think we are very, very close to that. I think what’s happening is people are paying attention to what’s going on. From a tech perspective, it is moving at hyper speed at this point, and so the world is evolving at such an incredibly fast rate that anybody that doesn’t adopt will ultimately fall behind at some point. So I think the waste industry historically has been a little behind, but I don’t anticipate that being the case for the long term.

Mitch Ratcliffe  22:23

When you raised your Series B, you said that you wanted patient capital that understands that this industry won’t transform overnight. And in the context of what you just said about everything changing at hyper speed, why patient? And how does that transformation happen in practice? And what do you see as the timeline?

Mike Marmo  22:41

It’s pretty simple. I think I alluded to this earlier. You have to build the foundation before you build the house. You can’t build the roof first, right? You have to build the foundation. And a lot of waste haulers—you have a varying degree of waste haulers around the country that are like two-to-three-truck operations all the way up to 30,000-truck fleets, right? So you have to meet them where they are. If you cannot run the business for them in a meaningful and impactful way, then you’ve already failed. There’s nothing that you can do that will really help them unless you pick a niche part of their business. And we have a lofty goal of being an operational management system. We want to be able to run the entire business on the platform.

So you have to start there. And when I say patient capital, there’s a lot of effort that goes into building those workflows, not just surface level, but adding depth, adding nuance and depth, to make sure the system is dynamic but rigid. You don’t want data to be wrong, and you don’t want it to get convoluted, but you want it to be dynamic enough to meet the need in the market. So that takes time. You have to learn. You have to listen. You have to pay attention to what’s going on. You have to be a really, really good partner to the waste hauler. They have to trust you and believe in you.

So that part of it is like the first step into the rest. But in conjunction with that, you have to be forward looking. You have to be looking at the things that they’re not paying attention to, the things that they don’t know, because they’re in the weeds dealing with the day-to-day. They’re dealing with servicing their customers, they’re dealing with the community, they’re dealing with building the business that they’re focused on. So it’s our job as a tech partner to be able to say, this is where the industry is moving, here’s what this is going to lead to, here’s the vision, and hopefully get people to sign up to that and believe in that.

So when we brought in a partner, we articulated that. I think a lot of times, when you bring on venture capital or any funding, they’re expecting this major hyper growth. But if you want to achieve what we’ve been speaking about thus far, you need to get things right, and you need to make sure that you’re building the foundation correctly.

Mitch Ratcliffe  24:40

You’re leaning into AI. Does that mean that you’re training models to become an expert in managing waste or hauler processes? Where’s the focus of your training?

Mike Marmo  24:51

It’s really in a couple different areas. I think what we really preach out there in the market is, AI for the sake of AI means nothing. Like, AI is cool. It’s great. It can provide you really meaningful value in certain areas of your life. And I think it’s going to be transformative, without a doubt. But in our industry, waste haulers don’t really care about necessarily putting something in because it’s flashy and nice and cool. They want it to provide value.

And so when we think about AI, we think about manual tasks. We think about repeatable tasks. We think about infinite-scale areas of their business that we’re solving an immediate pain point, or that they can scale with for the remainder of time, because that thing is going to happen all the time. So an example of that would be, how are we ingesting orders from multiple channels to create efficiencies? How are we setting up call centers? How are we transcribing phone calls for customer support and customer success?

And then I think what you’re referring to on the learning side is the gluing of traditional machine learning and algorithmic types of optimizations—for example, like route optimization—gluing it to historical behavior and being able to say, here’s the nuances, here’s when the person never puts their garbage out on time, here’s where this street is closed, but it doesn’t show you that in the map. Just certain things that dispatchers know, that tribal knowledge, that they understand their market, that an algorithm is not going to understand. And that’s where AI can layer in and learn behavior and then make better recommendations.

So it’s not an overnight thing. You have to have the data. It’s only as good as the data. So we’re really focused on the infrastructure architecture, making sure that we’re aggregating that data appropriately, and then learning on that data in order to make sure that we’re giving them the best option for success, or the best decision-making process, or the most optimal insight that we can provide.

Mitch Ratcliffe  26:42

So what’s an example of an AI-driven recommendation that one of your haulers has used to make a decision that they wouldn’t have otherwise?

Mike Marmo  26:50

Yeah, I think, like, operationally, or just anything that we can do that’s kind of AI-powered—

Mitch Ratcliffe  26:56

One that was a material difference for the hauler. What do you point to as an example when you’re talking to other haulers?

Mike Marmo  27:04

Yeah, let’s—I’ll probably say two. I think first, let’s just talk about—we’ve talked about change management. I think right now, internally, we’re really hyper-focused on making sure that we can create a really nice change management experience of adopting software. So we do a ton around AI data migrations, so that when we’re taking data out of a system, we’re able to map it in a quick and easy way that they can understand it, but also do structured cleanups of that data to make sure that they’re getting what they want into the new system. It seems like a small thing, but it’s a very challenging thing when you’re going through a long change management process. So that’s an immediate impact to the hauler, that they feel more comfortable in that change.

The second thing is, anything agentic that we build is going to provide value to the pain point that they’re trying to solve for. So whether that’s migrating data from one place into another—being able to take data out of a CRM or being able to put it into an ERP—meaningful value. You’ve just eliminated a manual task that they would have to do over and over and over again. That’s repetitive, that’s manual, and it applies. So it’s a really good method in providing ROI, because you can just say, that work is never going to be done again. That agent will work in that and do that for you with conviction.

But I think longer term, things like we talked about—service verification, material recognition, route optimization—those are efforts that we have to make meaningful investments in, that’ll be coming down the pike.

Mitch Ratcliffe  28:29

You know, as I listen to your description of this, and I think about the U.S. recycling system, which is, as you’ve pointed out, filled with small, private recyclers and haulers looking for ways to plug into, for instance, the growing extended producer responsibility infrastructure that’s emerging around us—I’m reminded of eBay. Is CurbWaste aiming to become a marketplace layer where those independent operators can begin to identify and plug into broader materials flows?

Mike Marmo  29:00

It’s on our radar. Like I said, I think a marketplace, to me, again, is really indicative of the behavior and the learning and understanding what’s going on. So right now, core focus is just visibility. I think we have to create the transparency layer first before anything else.

But yes, I would say, a marketplace, the ability to understand who’s best—like, RCI is a great example. I mean, RCI, when you’re partnering with LEED and you’re trying to find RCI facilities to establish those LEED points, that’s an area where we can help and say, this facility is in this area. Partner. We’re driving revenue for our customer base. We’re saying this RCI facility is on our platform. We can measure it. We can automate that process. We can get that LEED report to the right person in the right moment and give that level of visibility through dashboards or anything that we’re building at a customer-facing level.

Again, that’s work that doesn’t have to be done manually. That’s something that can happen in automation. That’s probably the first natural step. And we are doing some meaningful work with RCI and LEED. But long term, I think, yes, to your point, we want to get to a visibility layer, a waste meter layer, for anybody that wants it.

Mitch Ratcliffe  30:10

That transparency that you’re describing is going to be particularly important to producer responsibility organizations, the entities that are standing up to fulfill EPR requirements. Are you talking with them about how you can facilitate the management of their specific materials?

Mike Marmo  30:28

Yes, we are very much in discovery and in conversation with people that are obviously interested and incentivized to want to work with us and try to achieve this vision. So we do talk to people, and we do try to understand, what visibility do they want? What would they love to see? What is a utopian point of view? I mean, product is always something that we’re always forward looking on, right? What’s being built today is actionable. It’s already been validated. Now it’s about, what are we going to build in the future? We’re probably talking a few years down the road. I think we still have a lot to do on the workflow side. But yes, we are always keeping these teams informed and making sure that they’re aligned with where we’re going.

Mitch Ratcliffe  31:06

You’ve raised $50 million to date. Do you see a substantial amount of capital sitting out there waiting for this efflorescence of data visibility to take hold, so that they can begin to mine the material value in the economy?

Mike Marmo  31:21

Yes. I mean, our Series B was led by the venture arm of Cox Enterprises, and it was a very big part of their thesis. They saw the vision. They aligned with it. We were able to move quickly. But it really was rooted in the fact that they’ve been seeking this type of solution internally. They’ve been trying to figure out how to get more visibility into their own efforts as it relates to sustainability. So yes, I think we will continue to build. We have to fund the business in order to build the products and achieve the dream that we want to. We do believe that this can be a very big business, but ultimately, we are still aligning on that mission statement and that vision of giving the true visibility and measurement of the waste industry.

Mitch Ratcliffe  32:00

We’ve been looking kind of over the horizon without a clear timeframe. But let me ask you this: in 10 years, will we have an AI-enabled circular economy running, or will it still be in the process of being constructed?

Mike Marmo  32:12

I think it will be there. Yeah, in 10 years, I think it will be there. I think, you know what I know internally of where we are—we are not that far off. We have spent the last four years on the workflows. We are starting to see the data benefit of that. I think in the next 10 years we will 100% have it.

Mitch Ratcliffe  32:33

So how does that change the economy of the United States?

Mike Marmo  32:37

You know, that’s the part that I’m not 100% sure. I’ve been operating under the mission statement of this dream and this vision. I do think that it’s going to ultimately make us rethink how we think about waste.

You know, you have electricity, right? You can measure it. You can go onto your portal and see how much you’re consuming. You can measure water. You can measure all the things that you’re using on a day-to-day basis. The waste industry is a part, a core part, of our infrastructure. It’s a core part of our society. You can even look historically and say, when waste stops getting picked up, it can crumble a society. It can crumble a city. I mean, New York City went through that in the strike, and recently in Boston they went through it.

So there’s meaningful implications to the societal impact that waste has. And sometimes I think that gets taken for granted. And I think what we really want to focus on is showing that—getting all the waste haulers in our community, which I really think we’re building, is a really great community of waste haulers that are forward thinking, that want to be a part of that mission, and try to show people how critical this industry is, and also all the things and all the information and insights that can come out of it.

So yeah, it’s very mission-driven. It’s a very personal journey. It’s a very mission-driven journey. But ultimately, I think we have to break it down into its parts, phase out what the goals are, and then get to a point where we can show people how important it actually is.

Mitch Ratcliffe  34:05

This is a huge vision. How can our listeners keep track of your part of the story?

Mike Marmo  34:10

Well, I mean, obviously we post whatever we have to post on our website, so that’s a good place—at curbwaste.com—but also, anybody can reach out to us. I mean, we are very much trying to be an advocate of the industry, and we’re very much trying to be people that can be thought leaders and really speak about what we’re trying to achieve here. We’re very transparent, we’re very honest, we’re very true to who we are. So we love interacting with people in the space. We have people come to our office often. We have people talk to our team often. So for me, it’s reach out. Reach out on LinkedIn, reach out on the website. You can reach out by any means necessary.

Mitch Ratcliffe  34:48

Mike, thanks very much. It’s been a really interesting conversation.

Mike Marmo  34:52

Thank you. I really appreciate you having me.

[COMMERCIAL BREAK]

Mitch Ratcliffe  35:08

Welcome back to Sustainability In Your Ear. You’ve been listening to my conversation with Mike Marmo. He’s CEO and founder of CurbWaste, and a fourth-generation waste industry professional who’s building the CurbPOS system, an end-to-end operating system for independent waste haulers. You can learn more about the company and its work at curbwaste.com—CurbWaste is all one word, no space, no dash.

Mike said something during the conversation that I encourage you to sit with: waste is being created when it is being manufactured. Now, that’s a deceptively simple observation, and it reframes everything with regard to how we think about the leftovers of the take-make-waste economy. The moment a product rolls off the line, its waste stream is determined—its packaging, what you need to do with it, the end-of-use disposition of the product itself, and the materials that will need to be collected, sorted, and either returned to the supply chain or, unfortunately, sometimes buried in a hole. If you can accept that premise, then the waste management industry isn’t simply a downstream result of the current economy. It’s a mirror that we need to look into to see the potential value to be recovered next week, next month, next year, or decades from now, when materials can no longer serve their current purpose.

Mike also pointed to what happens when waste stops moving. In 1968, New York’s sanitation workers walked off the job for nine days—just nine days—and 100,000 tons of garbage piled up chest-high on sidewalks. Rats swarmed into the city’s best neighborhoods, and New York declared its first public health emergency since the 1931 polio epidemic. And just last summer, when Teamsters struck against Republic Services in the greater Boston area, trash went uncollected for more than two months across 14 communities. Dumpsters overflowed behind restaurants. The rodent population exploded, and schools faced the start of their school year buried by rotting waste. As Mike put it, when waste stops getting picked up, a society can crumble.

And that fragility reveals something profound about society’s relationship with the materials from which it is constructed. We’ve built a civilization on the assumption that waste must disappear—that it’s someone else’s problem, and that it is best put out of sight and kept out of mind. We’ve treated waste as dirty, shameful, and beneath notice. That cultural contempt has real economic consequences, because it means we’ve systematically underinvested in the infrastructure that manages the material afterlife of everything that we produce and consume.

Now just imagine what happens when waste is no longer something to dispose of, but something that it’s important to recover. When the 290 million tons of municipal solid waste moving through U.S. systems each year is finally understood not as a cost center, but as part of the supply chain—a feedstock stream worth tracking, optimizing, and monetizing with the same sophistication we bring to any other logistics challenge. That’s when the world CurbWaste wants to enable and its staggering economics will come into being.

Accenture research projected that the circular economy could generate $4.5 trillion in additional economic output by 2030 and as much as $25 trillion by 2050. The United Nations Development Program has endorsed that same $4.5 trillion figure, noting that the transition would simultaneously cut emissions, create stable jobs, and open new green markets all over the world. Market analysts are converging on figures that describe an enormous circular economy. King’s Research projects it will reach nearly $2.9 trillion by 2031, while a more conservative estimate from Next Move Strategy Consulting pinpoints $1.3 trillion in projected value by 2030—so that even the lowest projections represent a doubling or tripling of the current waste market’s value in just five years.

The point is that we’re dramatically underinvesting relative to the opportunity. CurbWaste’s CurbPOS is just getting started on the path to connecting waste generators to local haulers, closing the loop that Mike described, from the point a product is manufactured to the end of its life and, ideally, back into the supply chain.

Mike’s Amazon analogy is the right way to frame this. Amazon took the time to understand buyer behavior first, when they were just selling books, and then they connected warehousing, freight forwarding, and last-mile logistics based on the knowledge of the consumer’s needs. The waste industry can follow the same logic: identify what’s being generated, where it flows, and where it ends up, ready for collection. Then the challenge is plugging the myriad gaps in our collection infrastructure by connecting independent operators—new startups—to materials that they can monetize, using a shared digital infrastructure. Right there you can see the necessary transparency layer, the marketplace layer, that turns a fragmented collection system into the connective tissue for a circular supply chain.

And that’s the signal that can transform waste into value, and that will drive new revenue for state and local collection and processing companies under extended producer responsibility programs, and ultimately lead to planned regional materials flows that citizens don’t pay for, that companies exploit because it’s profitable.

So when waste stops being considered the dirty result of our consumption and starts being recognized as valuable—when society looks at what it throws away with the same interest it brings to what it buys—we will have a fundamentally different relationship with the material world. One that recognizes that the people who move and manage our waste are operating a utility as essential as electricity or water. And that’s the story that will help unfold and explore here on Sustainability In Your Ear.

So stay tuned. And folks, would you take a moment to check out our archive of more than 540 episodes of Sustainability In Your Ear? We’re in our sixth season, and I guarantee you there’s an interview that you’ll want to share with one of your friends. Writing a review on your favorite podcast platform will help your neighbors find us. Folks, you’re the amplifiers that can spread more ideas to create less waste. So please tell your friends, your family, and co-workers. They can find Sustainability In Your Ear on Apple Podcasts, Spotify, iHeartRadio, Audible, or whatever purveyor of podcast goodness they prefer.

Thank you for your support. I’m Mitch Ratcliffe. This is Sustainability In Your Ear, and we will be back with another innovator interview soon. In the meantime, folks, take care of yourself, take care of one another, and let’s all take care of this beautiful planet of ours. Have a green day.

The post Sustainability In Your Ear: CurbWaste’s Mike Marmo Is Building the Waste Logistics Layer of the Circular Economy appeared first on Earth911.

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Earth911 Inspiration: Waste Can End With You

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This week’s inspiration: “Waste starts with people and can end with you.”

We can make changes to reduce our waste by precycling when we shop, reducing what we purchase, reusing items to get the most use out of them, and recycling when possible. But when we have items to throw away, please dispose of trash responsibly and don’t litter. Let’s reduce our waste and clean up our planet. It’s our only home.

Earth911 inspirations. Post them, share your desire to help people think of the planet first, every day. Click the poster to get a larger image.

Waste starts with people and can end with you


Editor’s Note: This poster was originally published on March 12, 2021.

The post Earth911 Inspiration: Waste Can End With You appeared first on Earth911.

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Green Living

Best of Sustainability In Your Ear: GS1 Goes Wholechain To Track Beef Impacts

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Revisit an important conversation about understanding the source of your food. Consumers and grocers who want to verify the quality of the beef they sell are asking for increased supply chain transparency. Vivian Tai, Director of Innovation at GS1 US visited with Earth911 in February 2024 to introduce GS1’s Digital Link advanced universal product code and returns to talk beef transparency with Jayson Berryhill, cofounder of Wholechain, who worked with GS1 to develop a new standard for cattle traceability using innovative blockchain technology. Wholechain Cattle Traceability is a system for verifying compliance with various standards, including animal welfare and feeding practices. Wholechain’s blockchain-based system ensures that information about the entire supply chain—such as where the cattle were raised, what they ate, and their treatment in life—can be tracked and authenticated.
Vivian Tai, Director of Innovation at GS1 US, and Jayson Berryhill, cofounder of Wholechain, are our guests on Sustainability In Your Ear.

We explore how their collaboration will provide you with more information and how Wholechain’s platform might be used to calculate environmental impacts, such as deforestation and methane emissions, while helping companies comply with regulations that shape the world’s food supply, like the Food & Drug Administration’s Food Safety Modernization Act Rule 204, which requires business to maintain records of food production, processing, and distribution to enable rapid identification of contamination sources during a foodborne illness outbreak. We’ll also discuss how Wholechain’s blockchain technology could expand beyond cattle to other industries, creating more transparent, sustainable, and circular global supply chains. You can learn more about Wholechain at https://wholechain.com/ and about GS1’s traditional rectangular bar codes and next-generation 2D QR code, GS1 Digital Link at https://www.gs1us.org/

Editor’s Note: This episode originally aired on October 7, 2024.

The post Best of Sustainability In Your Ear: GS1 Goes Wholechain To Track Beef Impacts appeared first on Earth911.

https://earth911.com/podcast/earth911-podcast-gs1-goes-wholechain-to-track-beef-impacts/

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Green Living

Sustainability In Your Ear: The Ocean Conservancy’s Dr. Erin Murphy Documents the Lethality of Ocean Plastics

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Each year, over 11 million metric tons of plastic end up in the ocean, which is like dumping a garbage truck full of plastic every minute. For years, we’ve known that marine animals eat this debris, but no one had measured exactly how much plastic it takes to kill them. Dr. Erin Murphy, who leads ocean plastics research at the Ocean Conservancy, is the principal author of a major study published in the Proceedings of the National Academy of Sciences. Her team analyzed more than 10,000 necropsies from 95 species of seabirds, sea turtles, and marine mammals worldwide. Earth911’s summary describes this critical study, which found lethal plastic thresholds that could change how we view the plastic crisis.

Dr. Erin Murphy, Manager of Ocean Plastics Research at the Ocean Conservancy, is our guest on Sustainability In Your Ear.

The study measured how deadly different types of plastic are to sea life, which makes the results especially useful for policymakers. Each finding suggests a clear policy action, such as banning balloon releases like Florida has done, banning plastic bags as in California’s SB 54, or improving how fishing gear is marked and recovered. Still, Erin points out that focusing only on certain plastics is not enough. Her team found that even small amounts of any plastic can be dangerous. As she says, “At the end of the day, there is too much plastic in the ocean,” and we need big changes at every stage of the plastics life cycle, from production to disposal.

There’s encouraging evidence that interventions work. Communities in Hawaii conducted large-scale beach cleanups and saw the Hawaiian monk seal population rebound. A study published in Science confirmed that bag bans reduce plastic on beaches by 25 to 47%. And Ocean Conservancy’s International Coastal Cleanup, now in its 40th year, removed more than a million plastic bags from beaches last year. These actions address a parallel crisis in human health that is building from the same pollution source. Most of the microplastics now found in humans and around the world began as the same macroplastics that are killing puffins and turtles. As Erin puts it, “I do view this all as part of the same crisis.”

You can read the full study at pnas.org and learn more about Ocean Conservancy’s work at oceanconservancy.org.

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Interview Transcript

Mitch Ratcliffe  0:00

Hello, good morning, good afternoon or good evening, wherever you are on this beautiful planet of ours. Welcome to Sustainability In Your Ear. This is the podcast conversation about accelerating the transition to a sustainable, carbon-neutral society, and I’m your host, Mitch Ratcliffe. Thanks for joining the conversation today.

We’re going to talk about ocean plastics. Every year, more than 11 million metric tons of plastic enters the ocean. That’s the equivalent of dumping a garbage truck worth of plastic every minute. And we’ve known for decades that marine animals eat this debris. But until recently, no one had systematically quantified how much plastic it actually takes to kill them.

And the answer is, it turns out, disturbing. Less than three sugar cubes worth of plastic increases an Atlantic puffin’s risk of dying by 90%. A loggerhead turtle reaches the same threshold at about two baseballs worth, and for a harbor porpoise, a mass of plastic roughly the size of a soccer ball can kill. More concerning, at the 50% mortality level — that is, where half the animals who consume the plastic die — the volumes that kill them shrink to less than one sugar cube for a puffin and half a baseball for a loggerhead turtle.

Our guest today, Dr. Erin Murphy, is the manager of ocean plastics research at the Ocean Conservancy, and lead author of the study that produced these findings, published last month in the Proceedings of the National Academy of Sciences. Her team’s research analyzed more than 10,000 necroscopies across 95 species of seabirds, sea turtles, and marine mammals worldwide. It’s the most comprehensive assessment yet of how different plastic types — soft film like bags, hard fragments, synthetic rubber from balloons, and abandoned fishing gear — translate into mortality across marine life.

The findings matter beyond ocean conservation. A 2024 study in the New England Journal of Medicine found microplastics embedded in human arterial plaque of cardiovascular surgery patients, and those with detectable plastics were 4.5 times more likely to suffer a heart attack, stroke, or death in the following three years. The same polymers killing seabirds and sea turtles — polyethylene, PVC, and their chemical additives — are found in human blood, lungs, liver, and placenta.

Dr. Murphy’s research offers policymakers what they’ve been asking for: science-based data to inform decisions about which plastics to regulate and how aggressively to act. Nearly half the animals in her study that had ingested plastics were threatened or endangered species, and with global negotiations on a binding plastic treaty continuing and extended producer responsibility programs expanding across the United States, the timing of this research could not be more relevant.

So we’ll talk with Erin about what her team found, why balloon fragments are amongst the deadliest items for seabirds, how fishing gear became the leading killer of marine animals, and what her research means for the humans who share a planet and a body burden with these species. You can read the full study at pnas.org and find Ocean Conservancy’s work at oceanconservancy.org. Ocean Conservancy is all one word, no space, no dash. Oceanconservancy.org.

So how much plastic is too much for wildlife and for humans? Let’s find out right after this brief commercial break.

[COMMERCIAL BREAK]

Welcome to the show, Erin. How you doing today?

Erin Murphy  3:44

I’m doing well. Thank you so much for having me.

Mitch Ratcliffe  3:46

Well, thank you for joining me, and for this really important research. It was a fascinating read. We wrote it up, and I’m really pleased that you would join us to talk about it today. So can you explain what made this study different from previous attempts to quantify plastics’ lethality to marine life?

Erin Murphy  4:01

Yeah. So first, I’ll specify that we focus specifically on macroplastics, which are just plastics that are bigger than five millimeters in length. There’s more research on how microplastics, which are these smaller plastics, can harm animals, because scientists can study these in laboratory settings. Of course, it’s not feasible or ethical to feed animals like whales, sea turtles, or seabirds large plastic items and study what happens to them in the lab. And so as scientists, we really have to depend on opportunistically collecting dead animals in the environment and looking at what’s inside them to understand what’s happening with these bigger plastics.

And so previous research has looked at these sorts of threats as well, but they focused on fewer species, on smaller geographic areas, and they didn’t differentiate by plastic type, like hard plastics versus soft plastics. So they were really important for laying the groundwork for our larger study. But we were actually able to look globally and look at a broader set of species, and also differentiate by these different plastic types and by species size as well, which allowed us to get at some of these species-level understandings.

Mitch Ratcliffe  5:13

So the unfortunate truth is, we are feeding these animals this material by throwing it all away. That is a stark way of starting this conversation. And you use a lot of illustrative examples, like three sugar cubes worth of macroplastic can kill a puffin. How did you arrive at those kind of volume-based comparisons, and why is translating your data into those relatable measures important?

Erin Murphy  5:37

Yeah, so when we did this in the study, we actually looked at the influence of volume based on the animal’s body length. So we reported all of this as a deadly volume per centimeter of body length. But telling people 0.098 centimeters cubed per centimeter doesn’t really mean anything to them. And honestly, when I first got those centimeter-based thresholds, it didn’t mean that much to me.

And so we thought that choosing some iconic species that people could picture would help, but still saying, you know, three centimeters cubed of plastic kills a puffin, or 220 centimeters cubed of plastic kills a loggerhead, doesn’t really paint a picture in people’s heads, and three sugar cubes or a baseball are much easier to picture.

So we chose to do this because I think when people can picture these items, they can really understand that volume, and people do use plastic every single day, and so having volumes like that to compare to allows them to think about how little plastic can kill animals, especially when we compare it to how much we produce or use globally.

Mitch Ratcliffe  6:42

Can you put in context how long it takes for a puffin, for instance, to eat that much plastic? What do they eat in a day or a week generally?

Erin Murphy  6:52

Yeah, that’s a great question, and it’s actually the next step in our research. So to estimate the risk that something poses to wildlife, we have to understand two things. One is your question: how likely are they to be exposed to this threat? The second is, if they are exposed to it, how likely is it to harm them? And so this research really focused entirely on that second piece.

But to fully understand risk, we have to dig deeper into the first part, and that’s what we call likelihood of exposure. And so for puffins specifically, there’s not a lot of research, but we do know a lot about what species are eating, and we know that different species are more or less likely to eat plastic based on where they live, what they eat, and how they feed. So we’re really excited to be working with some really amazing researchers over the next few years to think about how we can connect exposure for these animals to the lethality and understand risk in a more comprehensive way.

Mitch Ratcliffe  7:48

I want to get a sense of what you found. You mentioned in the study that one whale can have a three-gallon bucket in its stomach. What’s the range of objects that you encountered as you were doing the research?

Erin Murphy  8:00

Yeah, this was pretty unbelievable to me, actually, some of the things that we saw in animals, and I’ll just give a few items that stood out to me. But there’s many more. Part of an oar handle from a plastic — or a plastic belt, webbing from the back of a lawn chair, a koozie, rubber pencil topper, fake Easter grass, ice cream tubs, single-use coffee pods, bungee cords, tons of different types of gear, ropes, nets, fishing line.

But I’ll just illustrate kind of how dramatic this can look with one example that really stood out to me, on a sperm whale that researchers in Spain reported on. Sperm whales feed very deep in the ocean, and they use echolocation to find their food. So it may be particularly hard for them to tell plastic from prey. And in this case, it seems like an entire greenhouse washed into the ocean, and this sperm whale happened upon it. It had plastic film cover material for a greenhouse in its stomach, along with a flower pot, a piece of a hose, a plastic burlap sack, plastic craft, and plastic spray bottle, and even fake plastic mulch in its stomach. And unfortunately, this was one of the individuals that did lose its life to plastic ingestion.

Mitch Ratcliffe  9:23

That’s — I mean, that’s shocking in so many ways. You found that one in five animals had plastic in their digestive tract when they died. Was this percentage higher or lower, and in the context of your previous answer, more or less shocking than you expected?

Erin Murphy  9:45

Yeah, I think, you know, it was higher than I expected. And it’s funny, because all of our research was based on previous research. It was a meta-analysis. So we collected data from existing literature. And I’d seen some, you know, similar numbers then reported at more local scales. But I think it still really shocked me to look at so many studies and see, you know, for sea turtles, that was one in two. Sea turtles had plastic in their gut. And for seabirds, one in three.

And when thinking about that at a global scale, that felt higher to me than it should be, and I suppose it’s because it is higher than it should be. These really are high ingestion rates. And for some of these individuals, the bulk amount of plastic in their gut, like that sperm whale, is particularly shocking.

Mitch Ratcliffe  10:35

I want to step back just for a second and talk about how long this kind of research has been going on. Because when I was a child, oceanography was very much in its infancy. How aggressively are we trying to understand what we’re doing to the ocean environment at this point, and where do you think we are in terms of the long arc of beginning to reach that understanding?

Erin Murphy  10:58

Yeah, I don’t know if we’ll ever fully understand it, which is one of the things that makes studying the ocean so interesting. It’s so complex and vast. But, you know, we’ve come a long way, and for plastic pollution in particular, the ’70s was really when we started seeing those first reports of animals eating plastics. You know, and it’s been 50 years since then. Now we have evidence of plastic ingestion in more than 1,300 species, and we’re starting to be able to get at these really more complicated analyses that help us understand like the potential quantity that kills an animal, like this one, or what does that mean possibly for populations.

I think the thing that’s been really impressive in the last decade, though, is how much research has been done on plastics. In particular, 10 years ago, roughly, the first study came out by Jambeck et al. that gave us an idea of the amount of plastic that was getting into the environment. And since then, we have learned so much as a scientific community, and people are working really hard to try to understand what these vast amounts of ocean plastic mean for ecosystems, for human health, for fishing industries and other marine industries that really depend on a healthy ocean, and we’ve been doing a lot of research on how to address it. So I don’t think we’ll ever fully understand everything that we’re doing to the ocean, but I think we’re working hard as a scientific community to get there.

Mitch Ratcliffe  12:38

It’s really disturbing to think about, because plastic in the 1970s was really only — was 10 years into widespread use, and widespread compared to today is nothing, since half the plastic we’ve manufactured in history has been made since 2002. So it sounds like what we’re really delving into now is a real-time accounting of the damage that we’re doing. How do you as a scientist think about what your goal is in terms of bringing the consequences of our decisions back to the public so we can think about it?

Erin Murphy  13:11

Yeah, that’s why I feel very lucky to work with an organization like Ocean Conservancy. We conduct research that we know governments and decision makers need to help address these problems, and we have a policy team and a communications team that are really well trained on helping us bring this research to the decision makers.

And the type of research we’re doing here, in particular on risk assessments, is something that governments are really craving. They want to set science-based targets as they try to address plastic pollution, and part of that is understanding environmental thresholds that we should be aiming for to better protect marine wildlife, to better protect marine ecosystems.

And so when we do research like this, a big part is getting it into the literature, in this sense to the scientific community, but it’s also working with our policy team and our communications team to make sure the public hears about it, and to make sure that decision makers nationally and abroad hear about the work that we’re doing, and can use this to help inform science-based targets that they’re setting right now.

Mitch Ratcliffe  14:22

So one of the materials that you found was most dangerous is rubber, particularly from balloons. It emerged as especially deadly for seabirds, where you estimated that just six pea-sized pieces could create a 90% mortality rate. What’s happening physiologically with balloon fragments that make them so lethal?

Erin Murphy  14:45

Yeah, so if you think about the design of a balloon, they’re super stretchy, and they’re long and they’re thin, and even the fragments seem to have this shape. And so they get stuck at those junctures in the gastrointestinal tract, like between the stomach and the intestine. And the gut moves things along through these wave-like contractions. And it seems like these stretchy materials just kind of stretch with it, and so the gut just isn’t able to move them through as easily. And we see similar things for those plastic bags as well.

Mitch Ratcliffe  15:20

Well, you also point out that sea turtles appear to mistake plastic bags for jellyfish. Is there anything we could do in terms of the chemistry of soft plastics or the appearance of soft plastics to make them less attractive to sea life?

Erin Murphy  15:35

Yeah, I don’t know if there’s a way that we can make them less attractive that I know of. And it’s unfortunate, because we know there are a lot of plastic bags in the environment compared to other plastics. Every year, Ocean Conservancy organizes the International Coastal Cleanup, and plastic bags are consistently in the top 10 items we see most frequently.

That being said, we do know ways of keeping plastic bags out of the ocean and protecting turtles in that way. And so every year — or in this last year, during our Coastal Cleanup — we collected, or our partner organizations collected, more than 1 million bags off our beaches. So this is really important for helping protect ocean animals, because those bags are already very close to their environment, and by removing them from beaches, we prevent them from getting into the ocean.

We also know that plastic bag bans, like the policy that California just implemented, are very effective in reducing the threat that plastic bags pose to marine wildlife, and help by preventing them from getting into the environment in the first place. So there was a recent study published in Science that actually showed that communities that implement bag bans, whether that’s a city, a state, or a country, do meaningfully reduce the amount of plastic bags that end up on beaches by 25 to 47%. So that’s a really significant reduction, and just provides further evidence that we know how to address some of these threats. We have ways of measuring if policies are effective, and it’s really about preventing these bags from getting into the environment in the first place.

Mitch Ratcliffe  17:18

Another example of really short-term human thinking is the impact of fishing gear pollution. Can you talk a little about what you found in terms of what’s being tossed overboard by the boats that are hoping to treat the ocean as an ongoing resource and source of living?

Erin Murphy  17:36

Yeah. I mean, I think a lot of the fishing gear that’s lost is lost on accident. Fishing gear can be really expensive for fishermen. Like crab pots can cost thousands of dollars. And so these are very valuable resources for fishers, and they’re expensive to replace.

But unfortunately, one of the challenges with fishing in turbid and wavy environments around storms, especially with things that are set, is that some gear does get lost. And we did see interactions and ingestion of fishing gear by many of these animals. And partially that’s because gear attracts prey species. So we know that for some animals, they’re more likely to interact with fishing gear, and this isn’t just ingestion, but also being entangled in fishing gear, because, you know, that gear is still fishing. And for a lot of these bigger species, fish are their prey, and so they’re also being drawn to these devices, or this lost gear that might have their food in it.

Mitch Ratcliffe  18:44

And your study didn’t look at the external plastic lethality, it was only that which was consumed. So we don’t really fully understand what the consequences of, say, for instance, a net lost at sea is for the ocean yet? Or do we?

Erin Murphy  19:01

Yeah, we have — there’s some studies that have looked at this, but this is actually another study we’re working on. So one of the next papers we’re working on right now is looking at entanglement lethality, and that really will be important for understanding the impacts of plastic pollution together, because ingestion and entanglement, when we talk about these bigger plastics, are the two main threats that we see.

Mitch Ratcliffe  19:24

I feel like we’ve got our bearings and can have a really productive conversation. But folks, we’re going to take a quick commercial break. We’ll be right back.

[COMMERCIAL BREAK]

Welcome back to Sustainability In Your Ear. Now, let’s get back to my discussion with the Ocean Conservancy’s Dr. Erin Murphy, who led a groundbreaking study about the lethal effects of macroplastics in sea life. Erin, nearly half the animals that you studied that had ingested plastics were already listed as threatened. Is plastic pollution accelerating extinction risk, and what species do you feel are most endangered?

Erin Murphy  20:03

Yeah, that’s a great question. Right now, there’s not a lot of research yet on population-level effects of plastic pollution, and our study is really helping build that information out. But it’s just very difficult to understand what’s happening to populations that often we have trouble studying in the first place.

Still, for many marine species, the IUCN Red List notes plastic pollution as a significant threat. Six out of seven sea turtle species are threatened. We saw really high ingestion rates for sea turtles. We know that 5% of the turtles in our data set died from plastic ingestion.

So I think there is a lot of evidence suggesting that this could be contributing to extinction risk. And there are some studies that look at very specific populations that we know are vulnerable, like the Hawaiian monk seal, that have found that plastic pollution is contributing to extinction risk.

And the hopeful piece in the Hawaiian monk seal case was actually that as communities started doing large-scale cleanup efforts in the Hawaiian Islands, they actually saw a rebound of that population. So again, just a reminder that even though we know that this is something that is posing a threat to marine species we really care about, it’s also evidence that targeted and effective intervention strategies can be really important in helping some of these species rebound.

Mitch Ratcliffe  21:34

That’s encouraging. So it isn’t as though we’re doomed, or that nature is doomed. We can intervene in our behavior today and make a change for the better in the future. How does the Ocean Conservancy encourage people to do that?

Erin Murphy  21:49

Yeah, so there was a study that we — some of us co-authored, and the Ocean Conservancy supported — that came out in 2020 that looked at what we would really need to do on a global scale to reduce plastic pollution in the ocean meaningfully enough to hit some of our potential targets. And in this case, we were thinking about just returning to 2010 annual leakage rates into the environment.

And what we found is that we really need sweeping change to our relationship with plastic and our waste management systems. And so we found that to achieve this goal, we would need a 40% reduction in plastic production globally. We would need waste management to reach levels of 98 to 99%, depending on the income of the country. And we would need, annually, 40% of waste that gets into the environment to then be cleaned up.

And at Ocean Conservancy, we really work on policy efforts in all three of those big buckets. And so we have the International Coastal Cleanup, but we also work on upstream policies with our policy teams at the sub-national, national, and international levels to try to work towards some of those goals of reducing plastic production and better managing the plastic waste that we do use.

Mitch Ratcliffe  23:10

You used the phrase “our relationship with plastic,” which is an interesting concept. In 2024, the New England Journal of Medicine reported that microplastics were found in human arterial plaque, and that resulted in much higher risk for cardiovascular events. Do you see what you’re studying as a parallel crisis, or the same crisis, just in a different species?

Erin Murphy  23:35

Yeah, I view that — you know, so they were looking specifically at microplastics, and we focused on macroplastics in this study. That being said, most microplastics that are in the environment are breaking off of these larger macroplastics. So in that sense, I do view this all as part of the same crisis, and I think we need to think about all of the harms that plastic materials are causing to human health, to animal health, and to sociocultural outcomes like our marine and terrestrial industries that are affected by plastic pollution, and we need to think about comprehensive policies that are addressing all of those harms.

Mitch Ratcliffe  24:17

Are there studies that are showing the same types of impacts from plastic in human and non-human species that we can use to start to tell the story in that same illustrative way that you did with the sugar cube analogy, so that people really take this seriously? I mean, the problem with our society is that we’re accustomed to throwing everything away.

Erin Murphy  24:40

Yeah, so there’s a lot of really great research that’s being done on microplastic exposure in other marine and aquatic organisms, and those are more similar to what’s happening in humans. But that human research, and the research on sort of sub-lethal microplastic risks — like the risks to cardiovascular systems, nervous system, gastrointestinal tracts — those are all pretty new, and so this body of research is really building, and I think we’re going to learn a lot in the next decade.

Mitch Ratcliffe  25:14

Do you see an acceleration of your ability to make those kinds of conclusions — well-grounded conclusions — emerging as a result of the advent of something like artificial intelligence? Are we at the dawn of a scientific revolution?

Erin Murphy  25:33

You know, that’s a good question. I don’t know in what ways AI will change the way that we’re doing research. Definitely, the rate at which we are producing research has increased. There’s more people working on these issues, and the scientific process is really just about iterating as a community and building on what we know. And so I think what we’re seeing here is a large-scale interest in this plastics issue and a big concern by the scientific community and by the public.

And as we learn more, we can answer more complicated questions. And so I was only able to do my work because over the last five decades, people have been studying what plastic is in the animals and reporting on that, and we have thousands of published papers now that tell us about what animals are consuming. And each one of those papers is really important in producing this bigger picture. And as we have, you know, similarly more studies on these sort of individual systems and humans, using model organisms like mice, we will be able to do the same sort of thing of painting this bigger picture for humans as well.

Mitch Ratcliffe  26:48

So as we get this higher-resolution view of what we’re doing, both to the planet and to ourselves, how does Ocean Conservancy potentially use those storytelling opportunities to get us to think about things like plastic bans, or the impact of extended producer responsibility on not just what ends up in the environment, but what we design so that it doesn’t end up in the environment in the future? It’s a big, complicated, multifaceted story. Where are we going?

Erin Murphy  27:17

Yeah, that is true, and I am not the policy expert at Ocean Conservancy, but the work that they do is amazing. And they, you know, they go and they talk to the public about these issues and educate the public through blogs and other resources to make sure that people understand the scale of the problem. And they work really closely with local decision makers who are interested in addressing these problems and help them develop bills, help them build support for bills. And, you know, we’ll meet with legislators and other leaders to help them kind of understand the reason that these policies are useful.

So Ocean Conservancy in the last 10 years has done a lot of work on state bills, like helping to push forward California’s SB 54, or specific bills that are targeting problematic plastics. Like recently, Florida passed a balloon release ban. Ocean Conservancy was also really involved in pushing that.

And I think we have seen with plastic pollution — what, for me, one of the things that’s most comforting in studying plastic pollution is actually that people do really seem to care about this issue and do seem willing to make change. So when people find out what I research — strangers — they always tell me about what they’re doing to reduce their plastic footprint, and I think that’s just a sign that there is appetite for change, and people want to understand how to do it. And as an organization, we’re just trying to leverage that passion and that stewardship that does kind of inherently exist in people, especially when they see the plastics that they’re using, and use that and sound science to help develop policies that can actually make a change on this issue.

Mitch Ratcliffe  29:06

Building on what you mentioned a moment ago, based on your findings about which plastics are the most lethal, it sounds like it’s a blend. But should policymakers prioritize specific materials, or just look at broad categories? No more of this type.

Erin Murphy  29:23

I think we need to do both. So we did find that different plastics pose different levels of risk, and I think there’s policies that are smaller and easier to implement, like balloon release bans and bag bans, that are effective in targeting some of these problematic plastics specifically. You know, using that Hawaiian monk seal example as well, having very targeted and strategic cleanups can be really important for protecting animals at sea turtle nesting beaches or seabird nesting areas. There’s these areas that we know are of particular importance for animals.

But still, the total plastic thresholds that we found were also low, and we see all types of plastics in these animals. So at the end of the day, there is too much plastic in the ocean, and we do need sweeping reforms along the entire plastics life cycle, from production to management to disposal, to meaningfully address this issue and protect our oceans.

And it takes longer to implement these policies because it does require some pretty extensive system-wide changes. But I think policies like California’s SB 54, which aims to reduce 25% of single-use plastics used, that’s really a step in the right direction. And so our policy team is on the front lines of making sure that that bill is fully implemented and that we understand the benefits of that policy by monitoring outcomes and effectiveness of it.

Mitch Ratcliffe  30:56

You mentioned earlier that on the International Coastal Cleanup Day, which is a distributed event all over the world but a day, they collected more than a million plastic bags last year. Is the goal in the long term to no longer need to do those cleanups? Or do you anticipate that we’re always going to be needing to do those cleanups?

Erin Murphy  31:18

Yeah, I think unfortunately, at this point, it’s hard to imagine a world where cleanups aren’t necessary. I think when we did that study in 2020, that was led by Lau et al., it was pretty alarming to see how much we would have to reduce plastic production and how well we would have to manage waste to no longer need cleanups at all, and we really did find that cleanups needed to be an important part of this solution.

And there’s already a lot of legacy plastics in the ocean. So I think as far as we can look forward, cleanups will always be an important part of the suite of solutions that we use.

They’re also really effective for monitoring what’s happening in our ocean. So I mentioned earlier that study that was published in Science that showed that plastic bag bans are effective. We were really excited to see that they actually used Ocean Conservancy International Coastal Cleanup data to do that analysis, and it really just emphasizes the value of citizen science. When you go out and collect data during a cleanup on your beach, we can see what changes occur through time in terms of what debris you’re seeing, and that helps us better understand whether it’s targeted policies or these broader policies, if they’re being effective or not.

Mitch Ratcliffe  32:42

What does the Ocean Conservancy do to help people do citizen science beyond the International Coastal Cleanup?

Erin Murphy  32:49

So that program has been going on for 40 years, and that’s really, in terms of citizen science, our main body of work. But we are interested in having citizens engage in other ways. So we often have — you can sign up for our newsletter and get information about opportunities to call your senators or write your senators or legislators about important ocean issues that are coming up.

And we also just have a lot of educational material so that people can start their own cleanup events, or find cleanup events to participate in, so that individuals can be engaged in being part of the solution.

Mitch Ratcliffe  33:31

You’ve mentioned a couple of items of research that you are beginning to pursue now. But if you had unlimited resources for the remainder of your career, what would you like to investigate and build on those findings with?

Erin Murphy  33:44

Yeah, it’s pretty hard to imagine unlimited resources, especially now, I know. But yeah, you know, we already started working on answering some of these next questions that are remaining for us, and I’m really excited about the work that we’re going to be doing over the next three to five years. And I will not be surprised if, you know, this body of work, trying to understand what’s happening to ocean animals, becomes a career-long question for me.

But in the short term, the things we’re really trying to get at is, first, that entanglement piece, which you mentioned — what is the lethality of plastic entanglement. And we also just launched a working group with scientists from all over the world to take what we have learned about the lethality of plastic ingestion and to build out, include what we are learning right now in our research about entanglement, and then bring in that exposure piece.

So that question you asked earlier about how much plastic is a puffin eating, how often does it have a lethal dose — that’s really what we want to get at. We want to know if we have an idea of what’s in the environment, how likely is that to have population-level effects for species? How likely are they to eat a lethal dose? How likely are they to die? And are we worried about populations because of this?

And right now, governments around the world are really trying to determine how to effectively address plastic pollution, and these sorts of comprehensive risk assessments are really helpful in setting targets. And so that’s really what I want to keep getting at: How can we take everything we know and help decision makers better understand, you know, a reasonable goal? Because a perfect goal is an ocean with no plastic, and I think we have to keep working towards that collectively. But it’s also really important to understand what species are being adversely affected and what we can do to immediately protect them now.

Mitch Ratcliffe  35:46

Well, it’s a multi-generational challenge, and I really applaud the work that you’re doing. How can folks keep up with the work that you’re undertaking?

Erin Murphy  35:55

Yeah, we have a brand new website at oceanconservancy.org, and we have a lot of information there, you know, specifically on what our plastics team is doing, but on what our entire organization is doing in terms of bills that we’re working on. They can also sign up for our newsletter to get information about what the organization is working on, and that will give them ample opportunities to participate in being part of the solution to the plastics crisis.

Mitch Ratcliffe  36:20

Erin, thanks so much for your time today. It’s been a fascinating conversation and an encouraging one.

Erin Murphy  36:26

Thank you. It was great to be here.

[COMMERCIAL BREAK]

Mitch Ratcliffe  36:34

Welcome back to Sustainability In Your Ear. You’ve been listening to my conversation with Dr. Erin Murphy, manager of ocean plastics research at the Ocean Conservancy, and she’s the lead author of the recent study published in the Proceedings of the National Academy of Sciences that quantifies, for the first time at this scale, how much plastic it takes to kill seabirds, sea turtles, and marine mammals.

You can explore the Ocean Conservancy’s wide-ranging work and sign up for a beach cleanup event at oceanconservancy.org. Ocean Conservancy is all one word, no space, no dash. Oceanconservancy.org.

The numbers Erin and her colleagues reported should stop us in our tracks. The volumes we heard about are disturbing, but imagine — one in five animals had plastic in their gut when they died. For sea turtles, it was one in two. What makes that study especially useful for policymakers is its differentiation by plastic type. Rubber fragments can be targeted because balloons are the deadliest material for seabirds. Soft plastics like bags are the top killer for sea turtles. Ghost fishing gear poses the greatest risk to marine mammals like whales. And each of these findings points to a specific, actionable policy lever: balloon release bans like Florida’s recent legislation, bag bans like California’s, and better gear-marking and recovery programs for the fishing industry.

But the targeted approach is only part of the answer. As Erin emphasized, the total plastic thresholds her team found were low across the board, meaning that every type of plastic poses a threat. “At the end of the day,” she said, “there is too much plastic in the ocean, and we need to do sweeping reforms along the entire plastics life cycle, from production to management to disposal.” That’s a very important quote. Keep it in mind.

A 2020 Ocean Conservancy-backed study quantified what “sweeping” means: a 40% reduction in global plastic production, waste management reaching 98 to 99% effectiveness in its collection and processing of plastic so it doesn’t reach nature, and annual cleanups of the 40% of plastic that still escapes into the environment — and that’s just to return to the 2010 leakage rates.

So that brings us to the elephant in the room — or maybe more to the point, the sperm whale with an entire greenhouse in its stomach — the global plastics treaty negotiations. Which were supposed to deliver a binding international agreement, collapsed in August 2025 in Geneva after oil-producing nations blocked provisions that called for production caps and toxic chemical phase-outs. More than 100 countries in the group known as the High Ambition Coalition were pushing for full life-cycle regulation for plastics, but the requirement that the negotiations reach a consensus gave a handful of petrochemical states an effective veto power. And effective it was.

So between the Busan round in late 2024 and the end of the Geneva talks in 2025, an estimated 7.4 million more metric tons of plastic entered the ocean. The world currently produces more than 460 million metric tons of plastic annually, and only 9% of that is being recycled. Every day, the equivalent of 2,000 garbage trucks of plastic is dumped into our oceans, rivers, and lakes.

However, the collapse of the treaty talks does not mean the end of progress. Erin pointed to evidence that targeted interventions can work. For example, communities in Hawaii conducted large beach cleanups and saw the Hawaiian monk seal population rebound. A study published in Science confirms that bag bans reduce plastic on beaches by between 25 and 47%. California’s SB 54 law aims to cut single-use plastics by 25%. And Ocean Conservancy’s International Coastal Cleanup, which is now in its 40th year, removed more than a million plastic bags from beaches last year. That cleanup data, collected by citizen scientists worldwide, is a research tool providing the time-series evidence that tells us whether policies are working.

So here’s what I want you to leave with from this conversation. Erin’s research focuses exclusively on acute mortality from ingested macroplastics — that’s obstruction, perforation, and torsion of the digestive tract. It does not capture the chronic effects of plastic and chemical exposure or entanglement, which her team will study next. That means the lethal thresholds that she reported likely underestimate the total harm plastic inflicts on marine life.

And the parallel crisis in human health is building from the same source of pollution, which has scattered microscopic shards of plastic across the planet, from the seas to the highest peaks. Most of these microplastics began as macroplastics, like those that are killing puffins and turtles. They break down in the environment into fragments small enough to enter our bloodstream, lungs, liver, and even women’s placentas. As Erin put it, it is all a part of the same crisis.

So one of the most encouraging things that Erin said was also the simplest. When strangers learn about what she studies, they stop and they tell her what they are doing to reduce their plastic footprint. That instinct to environmental stewardship is a real and powerful phenomenon, even if it’s currently being actively suppressed by governments. And the public’s will to protect nature is the foundation that policy, science, and investment will ultimately build on.

The ocean doesn’t need our sympathy. It needs a 40% cut in plastic production, waste systems that actually work, and the political will to treat a binding plastics agreement as a matter of human survival rather than an inconvenience for a few petrochemical companies. Until international negotiations deliver that agreement, the work continues at every other level: state legislatures, coastal cleanups, citizen science, and research programs like Erin’s that give decision makers the evidence-based targets that they’ve been asking for.

So stay tuned, folks, for more conversations about the solutions that can still turn this crisis around. And I hope you’ll take a moment to take a look at any of the more than 540 episodes of Sustainability In Your Ear in our archives. Take the time to share just one of them with your friends or your family. Writing a review on your favorite podcast platform will help your neighbors find us. Folks, you’re the amplifiers that can spread more ideas to create less waste. So please tell your friends, family, and co-workers they can find Sustainability In Your Ear on Apple Podcasts, Spotify, iHeartRadio, Audible, or whatever purveyor of podcast goodness they prefer.

Thank you all for your support. I’m Mitch Ratcliffe. This is Sustainability In Your Ear, and we will be back with another innovator interview soon. In the meantime, take care of yourself, take care of one another, and let’s all take care of this beautiful planet and its oceans. Have a green day.

The post Sustainability In Your Ear: The Ocean Conservancy’s Dr. Erin Murphy Documents the Lethality of Ocean Plastics appeared first on Earth911.

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