Sustainability In Your Ear

In South Africa, informal waste pickers recover between 80% and 90% of all plastic and paper that actually gets recycled. There are about 140,000 of these reclaimers, who walk through cities and landfills, pulling trolleys and selling what they collect to make a living. Each person can keep up to 24 tons of material out of landfills every year. Together, they saved municipalities R750 million (about $45 million) in landfill costs in just one year, yet they do this work without recognition, protection, or a formal role in the waste system.

Sifiso Gumbi began as a reclaimer at 19, collecting scrap metal in Soweto after school. After 15 years in the informal recycling economy, he founded Urban Surfer South Africa, a Johannesburg-based social enterprise that believes the people already doing recycling work should be supported and equipped, not replaced. Urban Surfer creates essential tools like PPE and collection trolleys with personalized number plates, helping reclaimers become recognized workers in their neighborhoods.

The organization also runs four recycling hubs where reclaimers can sort and bale their materials to sell at better prices, cutting out the middlemen who used to buy their collections for much less than market value.Urban Surfer tracks everything with GPS-enabled trolleys and a live dashboard, and this approach has increased reclaimer incomes by up to 300%.

Sifiso talks about why dignity is key to better recycling rates, how aluminum can prices show what gets collected and what ends up in landfills, and what it would take to expand this model across South Africa and the continent.

One key idea keeps coming up in the conversation: reclaimers are like an R&D department that no one asks for advice. In South Africa, aluminum cans sell for 28 to 30 rand per kilogram, and reclaimers collect them so thoroughly that Sifiso says finding one on the street is as rare as finding a dollar bill on the sidewalk. Meanwhile, materials with lower value end up piling up in landfills, which are quickly filling up in Johannesburg and Gauteng.

Companies that want their packaging recovered can learn from the people who decide every day what is worth picking up. Data is also important. Urban Surfer tracks every kilogram by material type and price at its hubs. As carbon and plastic credits become more common, reclaimers will have verified, real-time records of the work they have already done. Sifiso is honest about the challenges: four hubs are not enough for Gauteng, and there are always limits on land and equipment funding.

But the bigger challenge is building trust between waste pickers and a public that still sees them as vagrants, and between the informal workforce and the policymakers and companies whose programs will only work if rebates actually reach the people doing the collecting. This conversation asks whether a truly circular economy can be built by supporting the people who are already making it happen.

To learn more about Urban Surfer and to explore partnership and sponsorship opportunities that equip reclaimers with trolleys, protective gear, and recycling hub infrastructure visit urbansurfer.co.za.
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Most school uniforms are retired while they are still perfectly wearable. Children cycle through them on a predictable annual schedule as they grow, which sends a steady stream of usable clothing toward the landfill at the same moment families on tight budgets are paying to replace what their kids have grown out of. The waste side of that equation is substantial: the EPA estimates Americans generated about 17 million tons of textiles in 2018, and roughly 11.3 million tons of it was landfilled. Ethan and Desmond Hua, brothers from San Mateo, California, looked at textile waste and the cost of raising a family and saw a single solvable loop. In 2020, while they were still in middle school, they founded the HOPE Uniforms Program — HOPE stands for Help Our Planet Earth — a student-led nonprofit that collects gently used school uniforms families have outgrown and redistributes them, free, to families who need them. What began in one elementary school, run out of the family garage, now serves about 10 schools across three districts. By the brothers' count, HOPE has kept more than 14,000 uniforms out of landfills, redistributed over 12,000 of them, and served more than 1,400 households, saving those families an estimated $141,000. On this episode of Sustainability In Your Ear, Ethan and Desmond discuss why reuse sits a rung above recycling, how two teenagers built a multilingual logistics operation with a live inventory system, and what it took to talk Costco into donating 2,000 new uniforms. Ethan's work has earned him a 2025 Gloria Barron Prize for Young Heroes and a Samaritan House Young Samaritan Award.

The environmental case rests on a point that's easy to miss: the highest-value thing you can do with a garment is keep it whole and in use. What makes HOPE worth attention is the operations as much as the intent. The brothers engineered the return step directly into the model: families request uniforms through a website available in English, Spanish, and Mandarin Chinese; the uniforms are returned when kids outgrow them; and Ethan and Desmond spot-check and reissue them. That return loop, paired with a deliberate decision to treat families as repeat customers who deserve a dependable service, is what converts a one-time donation into a repeating cycle. The approach is also honest about scale — a garage operation in San Mateo County will not move the national textile-waste numbers on its own. The brothers' wager is replication; Ethan's dream is HOPE in another garage, and then another, and the model is plain enough for a motivated student in another district to copy. Whether thousands of small local loops can add up to a circular economy is the open question this conversation puts on the table.

To find out more about HOPE — and to donate uniforms, request them, or start a program in your own community — visit hopeuniformsprogram.com and follow the program on Instagram, @hopeuniformsprogram. If you know a teen making a difference for the planet, the Gloria Barron Prize for Young Heroes recognizes young changemakers each year. And to find reuse, donation, and recycling options for textiles near you, search the Earth911 recycling directory.
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About a quarter of global greenhouse gas emissions come from the food system, but the public conversation about food and climate keeps getting stuck at the two ends of the chain — what farmers grow on one side, what consumers buy on the other. The middle of that chain — processing, packaging, distribution, storage — is where most of the practical climate levers actually live, and it is the part you almost never see. Brendan Niemira, Chief Science and Technology Officer at the Institute of Food Technologists (IFT), wants us to look there. Brendan spent more than 25 years at the USDA Agricultural Research Service leading a team of 30-plus scientists developing non-thermal treatments — cold plasma, high-intensity light, irradiation — that kill foodborne pathogens on produce, meat, poultry, and shellfish without cooking the food. He stepped into the IFT role on December 1, 2025, and joins Sustainability In Your Ear to walk through IFT's new white paper, Food Science & Technology Solutions for Mitigating and Adapting to Climate Change, which lays out a roadmap covering circular bioeconomy practices, AI-enabled supply chain resilience, reusing food waste, precision fermentation, and cellular agriculture.

Brendan describes food safety as a three-legged stool — exclusion, containment, and eradication — and notes that in a warming world the first leg is getting harder. Pathogens travel further, persist longer, and show up in places they didn't used to, with warming oceans already expanding Vibrio bacteria in shellfish that previously didn't carry them. That reframes food safety as climate adaptation work — and it lands at the moment when federal research capacity is being thinned out. The conversation then opens into the ultra-processed food debate, where IFT is pressing the case that nutritional quality, not processing intensity, should define dietary guidance, because pasteurized milk, shelf-stable beans, and a deep-fried snack cake are all "processed," and collapsing them into a single category hobbles the very technologies that extend shelf life and cut food waste. Brendan closes on the structural shift coming next: humans domesticated about 50 animal species over 25,000 years of agriculture, but precision fermentation — built on whole genome sequencing and metabolomics — opens up trillions of possible microbial community combinations, each able to turn side streams and waste streams into dairy proteins, vitamins, flocculants for water treatment, and food ingredients. Garbage in, gumdrops out, as he puts it. We're not there yet, but the trajectory is clear.

To learn more about IFT's work and download the climate white paper, visit ift.org.
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Less than 2% of Americans can put plastic film in their curbside recycling bin, according to The Recycling Partnership. Meanwhile, the country generates millions of pounds of bags, pallet wrap, bubble mailers, and dry cleaner sleeves every year that machinery at materials recovery facilities is designed to reject. The plastic film problem has been the recycling industry's white whale for three decades — too contaminated for most processors, too light for most economics. But more than 30 years ago, Trex Company, then a small operation in the Shenandoah Valley of Virginia, decided to build its supply chain around exactly this material. By the end of 2024, Trex had upcycled more than 5.5 billion pounds of waste plastic film into composite decking and had become one of the largest plastic film recyclers in North America. On this episode of Sustainability In Your Ear, Amy Fernandez, Chief Legal and Sustainability Officer, and Zachary Lauer, Chief Operations Officer at Trex, discuss how the company designs an entire manufacturing process around feedstock variability, why Trex indexed its 2024 sustainability report to IFRS standards before any US regulator required it, and what has to happen for old Trex decks to become new Trex decks.
 
Most manufacturers spend their engineering effort narrowing input tolerances. Trex went the other direction. Zach described thousands of recipes the production lines can run through, swapping between cleaner stretch film one day and heavily contaminated industrial trimmings the next. Artificial intelligence reads each feedstock stream in real time and adjusts extrusion temperatures and line speeds to keep the finished board within specification. In 2024, the company sourced over 1 billion pounds of reclaimed PE film and wood scrap, including 377 million pounds of waste plastic, through a national collection network of more than 10,000 retail drop-off locations and hundreds of school and community partners enrolled in its NexTrex program. The company is also preparing for the first generation of Trex decks, which are reaching replacement age, and its manufacturing lines can reabsorb the company's own boards. The recycling bottleneck is contractors pulling up old decks who don't want to sort screws from boards. Underneath all of it is a point worth lingering on: Trex's poly feedstock isn't priced off a barrel of crude, which means in a period of reshoring, tariff volatility, and oil-market disruption, recycled supply chains are structurally more stable than virgin ones, not less.

To find out more about Trex and its sustainability work, visit trex.com. The 2024 Sustainability Report is available on the company's investor relations site.

A traditional sustainability certification can take six to eight weeks and thousands of dollars in consultancy fees, and still leave purchasers wondering whether the claims actually hold up. Martin Johnston, founder of EarthRating.ai, thinks he can deliver a more useful answer in 10 minutes. His London-based startup is building a universal credibility score for sustainability — a 1,000-point rating, drawn from roughly 100 public data points, that measures whether what a company says about its environmental and social performance is consistent with what its audited filings and regulatory disclosures actually show. The premise borrows directly from consumer credit scoring: a FICO score doesn't tell a lender whether you're a good person, only whether your behavior is consistent enough to be trusted. On this episode of Sustainability In Your Ear, Martin explains how EarthRating's "accelerated impact engine" gathers verified data instead of relying on questionnaires, and why the small and mid-sized businesses now caught up in the EU's Corporate Sustainability Reporting Directive and the UK's Procurement Act 2023 need an affordable way to prove their credentials.

Most sustainability frameworks rely on self-reported questionnaires; EarthRating pulls data from audited annual reports, regulatory filings, press coverage, and marketing materials, then cross-checks them against each other to surface contradictions before they become a regulatory or reputational problem. A near-term emissions target that appears in a press release but not in the audited annual report is exactly the kind of credibility gap the platform is designed to flag. Importantly, EarthRating isn't measuring environmental impact — it's measuring whether a company's story is internally consistent and externally verifiable. That sidesteps the impossible problem of reducing carbon, water, biodiversity, and social performance into a single comparable number, and replaces it with a more tractable question: are the claims true? That speed and accessibility comes with real caveats, and Martin and I dig into them. A credibility score isn't an impact score: a small landscaping firm with a modest, well-documented commitment to electric mowers could rate higher than a multinational with aspirational but unverified net-zero pledges. That's the right calibration for measuring trust, but it isn't the same as measuring environmental performance. EarthRating also exists at "Google 1.0," in Martin's own words — a launch-stage platform with a proprietary methodology that hasn't yet been externally audited. Global standards aren't willed into existence; they're earned through adoption. The underlying problem EarthRating is trying to solve — making credible sustainability measurement accessible to the businesses that have been priced out of it — is a real one, and worth watching.

To find out more about EarthRating, visit EarthRating.ai.