Scientists at Northwestern University have developed a breakthrough building material that could redefine sustainable construction—using seawater, electricity, and CO₂ to create carbon-negative concrete, cement, and plaster.
This innovation turns atmospheric CO₂ into sand-like minerals, offering a scalable alternative to traditional aggregates. Not only does it reduce emissions, but it also generates clean hydrogen fuel—unlocking a powerful synergy for green infrastructure.
This has key applications in the UAE and aligns with national goals: decarbonising the construction sector, conserving natural resources, and scaling green hydrogen production. With vast coastlines, advanced infrastructure, and an innovation-driven vision, the UAE is ideally positioned to lead the regional adoption of such solutions.
As the cement and concrete industry faces increasing pressure to cut emissions, technologies like this can turn buildings into carbon sinks—offering both climate impact and commercial potential.
Turning Sustainability from Compliance into Business Value | ESG Strategy & Governance Advisor | TEDx Speaker | LinkedIn Creator | UNAM Professor | +127K Followers
Transforming coffee waste into eyewear
🌎
Every day, billions of cups of coffee are consumed worldwide, generating significant amounts of organic waste. Most of these used coffee grounds end up in landfills, contributing to methane emissions as they decompose. However, advancements in material science have enabled the transformation of this waste into durable biopolymers. By integrating coffee grounds with plant-based binders, new materials can be developed that offer structural integrity comparable to traditional plastics while maintaining a significantly lower environmental impact.
One application of this innovation is in the production of eyeglass frames and cases. Traditional eyewear is predominantly made from petroleum-based plastics, which contribute to long-term environmental pollution due to their slow degradation rate. In contrast, frames produced from coffee-based biopolymers biodegrade at a much faster rate and, under the right conditions, can even serve as organic fertilizer. This not only reduces reliance on virgin plastic but also creates a circular economy model by repurposing an abundant waste stream into a functional product.
The production process involves compressing coffee grounds with biodegradable polymers and natural fibers to form a solid, moldable material. This composite is then cut into precise frame shapes using automated machinery, ensuring consistency and quality. The result is a lightweight, durable product with a unique aesthetic that appeals to environmentally conscious consumers. Additionally, because the material is derived from organic sources, it avoids the toxic emissions associated with conventional plastic manufacturing.
Despite challenges in global supply chains and external disruptions, the production of sustainable eyewear continues to grow. Advances in biopolymer technology are expanding the potential for waste-derived materials in other consumer applications.
With increasing regulatory and consumer pressure to transition away from fossil fuel-based plastics, innovations in waste upcycling offer a viable pathway toward more sustainable product development.
#sustainability#sustainable#business#esg#climatechange#innovation#circulareconomy
Waste Or Wasted?
People treat recycling and upcycling as the same thing. They're not.
Recycling breaks a material down so it can be processed and used again, usually through melting, shredding, pulping or chemical treatment. Upcycling keeps the object intact and gives it a new purpose.
They suit different situations. Recycling is built for scale through collection, sorting and recovery. Upcycling starts with the object and asks whether it still has enough life or usefulness left before it is broken apart.
Recycling recovers material. Upcycling keeps more of the object, along with the labour, form and embedded energy already in it.
Benedetto Bufalino's work shows this clearly. He takes familiar objects and gives them new jobs, cars turned into planters and tables, phone boxes turned into aquariums, while keeping the original object clear enough for the idea to land. The value hasn't. In a DW Euromaxx interview, he said he loves to question what is regulated and reinvent.
Most upcycling is less dramatic and closer to daily use. Jars reused for leftovers or screws, biscuit tins for sewing bits, rigid gift boxes kept for cables and documents, and shipping boxes reused for returns, resale or storage. It extends useful life and avoids buying something else to do the same job.
Recycling takes energy, water, transport and infrastructure, and some materials lose quality each cycle. Upcycling avoids that processing and keeps original material quality for longer. It also supports repair, fabrication and local making.
But upcycling isn't always the answer. If a material is already recovered well at scale, a short-lived reuse idea can keep it out of the bin but also out of the recycling stream. Reused once doesn't automatically mean better. It depends on what the second use replaces, how long it lasts, what extra materials were needed, and what happens after.
Some materials make this clearer. Metals like aluminium and copper have recycling value, so turning them into low-use decorative pieces isn't always the best outcome. In other cases, especially with durable objects, fixtures, furniture, or packs with second-use potential, keeping the object in play can hold onto more value before recycling makes sense.
Recycling has limits too. A pack can be technically recyclable and still fail in practice because collection systems vary, sorting performance varies, contamination ruins batches, and economics can collapse a recovery route that looked fine on paper. A recyclable claim and a circular outcome aren't the same thing.
EPR and reuse targets are shifting this further. Fees, compliance, and design standards are increasingly tied to end-of-life performance, pushing choices upstream into design and system decisions.
Bufalino's work may be extreme, but the decision behind it isn't. Packaging throws up the same choice every day. Sometimes the value is in recovering the material. Sometimes it's in not giving up on the object too soon.
📷Benedetto Bufalino
🇮🇳Building Para Energia | Circular Solar | Greening Supply Chains | Working at the intersection of materials, waste & energy.
🇮🇳Onground with Bharat Climate Startups - representing India climate startups globally.
🌟 This Global Recycling Day 2025, I want to share how recycling helps us fight climate change. 🌟
While travelling across cities and towns in India to uncover amazing climate solutions, I met two incredible companies in Pune tackling hard-to-recycle waste and empowering communities in the process.
Their work isn’t just about waste—it’s about creating safe, dignified jobs and building a sustainable future for everyone.
🎯Without™ (by Ashaya)Anish Malpani They’re solving one of the toughest waste problems—multi-layered plastics like chip packets.
♻️What makes them special?
They don’t just recycle; they turn waste into valuable resources while supporting waste pickers in underserved communities. By including waste pickers in their process, they’re not only fighting plastic pollution but also providing fair wages and skill development.
They’ve created the world’s first sunglasses from chip packets and even recycled shampoo sachets into bottles! Their work proves that sustainability and social equity can go hand in hand.
🎯 PadCareAjinkya Dhariya
The company is addressing a problem many shy away from—sanitary waste.
They’ve developed a system to collect and recycle used sanitary napkins, turning them into useful materials like plastic pellets and paper. But their impact goes deeper.
♻️They’ve created a decentralised collection system that protects domestic workers from manually handling sanitary waste, reducing health risks. Their work is breaking taboos, promoting hygiene, and giving women guilt-free menstruation.
Both companies are showing us that recycling isn’t just about waste—it’s about reimagining resources, empowering communities, and creating dignified livelihoods. They’re handling waste no one else is touching and proving that climate action starts at the grassroots.
💪🔥 Let’s celebrate these changemakers and support their efforts to build a greener, cleaner, and more equitable world.
PS: Suprio and I are travelling with Bharat Climate Startups to spotlight inspiring climate solutions from every corner of India. Stay tuned for more stories from the ground!
#GlobalRecyclingDay#ClimateAction#BharatClimateStartups#CircularEconomy#WasteToWealth#Sustainability#netzero
In a world of capitalism - recycled polyester will lose to virgin polyester (in most scenarios).
Apparently, recycled PET bottles flakes is about 21% cheaper than virgin PET raw materials. However, the processing costs (via chemical recycling) can increase costs by about 20-30% compared to virgin polyester production.
In the long run, the processing costs are supposed to come down. In 2020 the premium of “recycled” was 35-45% and has since then come down to 13-18% due to technological improvements. However, traceability and certifications such as GRS adds 3-5% on top of total costs of recycled material.
Maybe in future the cost of virgin and recycled polyester will be equalised. however, proving the fact that your material is in fact recycled is going to cost you more. this is pretty counter productive.
I say this because, virgin materials don’t need any extra certifications to sell to the market. On top of this manufacturers can continue to scam buyers and charge a green premium by falsely claiming their material is recycled.
We really don’t need a system where doing the right thing costs more.
What we actually need is a level playing field for recycled materials. the government should be looking at charging taxes on virgin materials or all together banning them.
If cost of bureaucracy has to be added, then it should be added to virgin materials rather than recycled materials.
And I find it hard to believe that EPR fee is a way to add premium as these are passed on to consumers rather than changing producer behaviours.
What are other ways you think we could bring down the prices of recycled materials?
#Recycling#TextileWaste#CircularEconomy#Polyester#EPR
Polyamide Recycling and Upcycling: Turning Waste into Value with Engineered Bacteria.
Nylons, or aliphatic polyamides, are workhorses in industries like textiles and automotive, praised for their strength and durability. Yet, less than 5% are recycled, and traditional chemical recycling often produces complex mixtures that are difficult to purify.
Ina recent Nature Microbiology paper the researchers demonstrates the power of synthetic biology to transform nylon waste into valuable products.
They have engineered Pseudomonas putida KT2440 to:
Metabolize C6-polyamide monomers: including 6-aminohexanoic acid, ε-caprolactam, and 1,6-hexamethylenediamine, through adaptive laboratory evolution.
Break down nylon oligomers: both linear and cyclic, derived from chemical hydrolysis, by expressing nylonase enzymes.
Unlock the metabolic pathways: for these non-natural substrates, revealed through RNA sequencing and reverse engineering.
But that's not all! They have taken it a step further by expressing the phaCAB operon from Cupriavidus necator, enabling P. putida to produce polyhydroxybutyrate (PHB) from PA6 hydrolysates – a sustainable bioplastic.
This study showcases a powerful microbial host for the biological conversion of polyamide monomers and mixed hydrolysates, in tandem with chemical hydrolysis, into a value-added product. This is a significant step towards a circular economy for plastics.
#sustainability#biotechnology#syntheticbiology#circulareconomy
Mexico made plastic from cactus — and it disappears like a leaf in the dirt
In a small lab in Guadalajara, surrounded by desert succulents and the sharp scent of green nopal, Mexican chemical engineer Sandra Pascoe Ortiz has done something that could rewrite the future of packaging. She has created plastic — not from oil, but from cactus juice. And when it’s tossed into the soil, it vanishes like a fallen leaf in the rain.
The key ingredient? The common prickly pear cactus, known as “nopal” in Mexico — a plant so abundant it’s found in gardens, fields, even on dinner plates. Ortiz’s breakthrough lies in extracting the viscous, sticky juice from its thick green pads and turning it into a polymer film that mimics the flexibility and strength of plastic — without any of the toxins or environmental cost.
What sets this cactus plastic apart isn’t just that it’s plant-based — it’s how fast it disappears. In regular garden soil, it biodegrades in just 2 to 3 months. In water, it dissolves in less than a week. No microplastics. No residues. No landfill centuries. The material is also edible and non-toxic, making it safe for wildlife and ocean life alike — a vital factor in a planet drowning in plastic waste.
Even more impressive, the process doesn’t harm the cactus. Only mature leaves are trimmed, allowing the plant to regenerate naturally. The juice is mixed with glycerin, natural waxes, and proteins, then poured into molds and dried — no synthetic chemicals, no industrial waste. It’s low-energy, low-cost, and perfectly tailored to the arid Mexican climate.
Today, Ortiz’s cactus plastic is being prototyped for use in bags, packaging, and even edible wrappers. In rural markets and coastal towns where plastic pollution is devastating ecosystems, the cactus could become more than a crop — it could be the future of circular design.
Mexico’s deserts may have just handed us the solution to a global crisis — one green paddle at a time.
I asked 25 contractors a simple question: If low‑carbon concrete costs the same, why aren’t we pouring it everywhere? Turns out…
...we can start today.
Most projects tested switched to low‑carbon mixes with no cost increase, or a tiny 5% bump, while cutting tens of thousands of tonnes of emissions across 109 pilots.
That’s not a moonshot.
That’s procurement with a pulse.
On big jobs, costs trended lower thanks to scale.
Performance concerns were manageable.
Access wasn’t the blocker.
Old habits were.
For leaders in the built environment and real estate, this is the rare win where sustainability, whole‑life carbon, and business performance align.
We reduce embodied carbon now.
We future‑proof assets against regulation.
We open doors to sustainable finance.
And we don’t blow the budget.
This is not a PR exercise.
It’s a margin play with a climate tailwind.
Concrete with up to 32% less carbon is available at market rates or close to it.
In one multimillion‑dollar project, the “green” premium was under $2,000.
If that’s a deal‑breaker, the problem isn’t the concrete.
What to do next:
↳ Tell your teams to spec below‑baseline mixes as the default.
↳ Bid with suppliers who provide EPDs and proven low‑carbon options.
↳ Track embodied carbon alongside cost and schedule—every job, every pour.
↳ Start with foundations, slabs, and parking structures, then scale.
We’ve waited long enough for perfection.
“Good, available, low‑carbon” just lapped “someday tech.”
Pour the future now.
🔔 TL;DR: Low‑carbon concrete at no cost or ~5% is here. Cut emissions, meet codes, unlock capital, protect margins. If your projects aren’t using it, that’s a choice, not a constraint.
Access the report here: https://lnkd.in/gd_NextA#LowCarbon#Concrete#Construction#RealEstate#BuiltEnvironment#Decarbonization#SustainableFinance#WholeLifeCarbon#CircularEconomy#ClimateAdaptation#CircularEconomy#Sustainability
Founder of WT Arch & Design, I help architects, interior designers, and clients elevate their projects with AI-driven design and photorealistic 3D visuals for maximum impact.
+4.82 Millions Impressions in 21 Months
Day 260
🚨 "Designing for Climate Extremes: Architecture in the Age of Uncertainty"
As climate change intensifies, architects face a new mandate:
Design not just for aesthetics or function—but for resilience.
Here’s how we can rethink architecture in the face of rising temperatures, wild weather, and ecological fragility:
1️⃣ Passive Design Isn't Optional Anymore
In regions with extreme heat or cold, passive strategies like cross ventilation, thermal mass, and strategic shading are no longer luxuries—they're survival tools.
🏜️ Consider the windcatchers (badgirs) of Yazd, Iran—ancient systems that naturally cooled interiors centuries before HVAC.
💡 Solution:
Orient buildings to maximize shade and airflow.
Use materials with high thermal inertia.
Incorporate climate-responsive facades and green roofs.
“A well-designed wall can save more energy than any machine.”
2️⃣ Material Choice in a Warming World
Traditional concrete contributes to global emissions and struggles in temperature fluctuation zones.
Wildfires, floods, and salinity are reshaping how we think about longevity.
💡 Solution:
Opt for low-carbon materials: hempcrete, rammed earth, or carbon-sequestering blocks.
Use resilient detailing—elevated foundations, water-resistant cladding, and flexible joints.
Learn from vernacular architecture: earthen walls, stone vaults, and compact forms.
“The future of architecture may lie in the past.”
3️⃣ Buildings as Climate Shields
Homes and public buildings must now double as refuges—from heatwaves, floods, and storms.
This requires anticipating disruption, not just reacting to it.
💡 Solution:
Build raised platforms and dry-proof basements in flood zones.
Incorporate rainwater harvesting, solar integration, and thermal buffering.
Case in point: The Floating School of Makoko, Nigeria—architecture adapted to life on water.
“In an unstable world, architecture must be the stable element.”
Balancing Aesthetics with Resilience
🌀 Form vs. Function:
It’s no longer either/or—we must blend poetic beauty with practical climate defense.
🌱 Visual Impact vs. Ecological Footprint:
Can your building look striking and sequester carbon?
🏗️ Designing for Comfort vs. Designing for Survival:
The line is getting thinner. It’s time to design for both.
What Can We Learn?
Climate extremes are no longer “future problems.”
They're design parameters today.
The challenge isn’t just to resist climate forces—but to adapt with grace.
💡 Challenge:
Can your next project endure the next 50 years of weather—and still inspire?
“Are we designing buildings that survive the storm—or shape the next climate era?”
Let’s talk. How are you incorporating resilience into your designs?
👇 Share your ideas and let’s exchange strategies.
📸 Images generated by AI – Midjourney
#ClimateArchitecture#ResilientDesign#SustainableArchitecture#PassiveDesign#LowCarbonMaterials#ArchitecturalInnovation#VernacularArchitecture#DesignForDisaster#GreenBuilding