Resource Abundance Weekly Review 2026-05-21
Week In Review
The week’s strongest signal is the speed at which substitution and recycling are pulling critical materials out of the choke-point category. XPRIZE named 37 semifinalists in its $119M Water Scarcity competition, the University of Hong Kong’s SS-H2 stainless steel reportedly cuts the metal cost of seawater electrolyzers by a factor of forty against titanium, and a Washington University team showed a platinum-free hydrogen catalyst holding industrial current for over a thousand hours. On the rare-earth side, USA Rare Earth’s Texas grant moves the country a step closer to a domestic heavy-rare-earth supply for permanent magnets. Together these read as a story about which inputs the industrial system is now actively trying to make optional.
A second thread runs through the week’s biomanufacturing news. Meatly’s £10.4M Series A funds what will be Europe’s largest cultivated-meat bioreactor, and Kraig Biocraft detailed an immortalized silkworm silk-gland cell line that secretes proteins continuously rather than being destroyed to harvest them. The shared premise is that cells, not refineries or farms, become the production unit for the next generation of food and fibers — with implications for land use, supply chain length, and the price floor of premium proteins.
The third theme is process chemistry replacing brute-force heat. A heat-stable cutinase approaches the temperature window needed for commercial PET depolymerization, an American Chemical Society press release describes an electrochemical route to low-emission cement, and TOMRA’s new AI-native sorting platform attacks the front-end recovery problem with deep learning rather than mechanical churn. Materials policy is increasingly about kilowatts and enzymes rather than furnaces.
Finally, Tokyo City University’s 25.14% perovskite-CIGS tandem record extends the trend of substituting abundant elements for silicon’s processing burden in photovoltaics, closing the loop between cheaper energy and cheaper materials production — the two halves of the abundance equation.
Items
XPRIZE Names 37 Semifinalists in $119M Water Scarcity Competition
The XPRIZE Foundation advanced 37 teams from 14 countries to the semifinal round of its five-year, $119 million Water Scarcity competition on May 12. Twenty teams in the Track A System-Level Innovation category will share $5 million as they build out integrated desalination systems capable of producing roughly 1,000 litres of clean water per day for two weeks of continuous testing. Seventeen teams in Track B, focused on novel materials and methods, will share up to $300,000 to push laboratory-scale improvements in membrane selectivity, permeability, recovery rates, and energy efficiency.
The prize structure is deliberately split across systems and materials because the desalination industry has been incremental since the early 2000s — efficient enough to scale but not cheap enough to displace imported water in most low- and middle-income contexts. The semifinalist roster includes modular and offshore configurations, renewable-powered systems, and groups working on entirely new separation chemistries.
XPRIZE frames the underlying problem in stark terms: roughly 80% of the global population now faces some form of water scarcity, and projections suggest a 40% shortfall against demand by 2030. Semifinals testing runs through 2026, with finalists named in 2027 and winners selected in 2028. The competition’s value is less in any single winning technology than in the broad cross-section of approaches it forces into head-to-head, instrumented comparison.
Source: XPRIZE Foundation
Platinum-Free Hydrogen Catalyst Runs 1,000+ Hours at Industrial Current
A team led by Gang Wu at Washington University in St. Louis reported on May 17 a platinum-group-metal-free catalyst that sustained industrial-grade current densities in an anion-exchange-membrane water electrolyzer (AEMWE) for more than 1,000 hours. The material pairs rhenium phosphide with molybdenum phosphide in a heterostructure that handles the hydrogen-evolution reaction at the cathode without the precious metals that dominate current designs.
Platinum loading has been one of the persistent reasons green hydrogen has not crossed cost parity with fossil-derived hydrogen at scale. Anion-exchange-membrane systems are attractive because, unlike proton-exchange-membrane electrolyzers, they can in principle avoid precious metals at both electrodes — but until recently the durability gap was severe, with non-platinum catalysts degrading within hundreds of hours at industrial loads.
The 1,000-hour figure matters because it crosses the durability threshold where AEMWE systems can be considered for commercial deployment rather than just laboratory demonstration. Combined with parallel materials work on stack components, results like this are the reason green hydrogen cost curves have been bending faster than most 2020-era forecasts suggested.
Source: ScienceDaily
Tokyo City University Sets 25.14% Perovskite-CIGS Tandem Record
Researchers at Tokyo City University announced a certified 25.14% power conversion efficiency for a tandem solar cell pairing a perovskite top cell with a copper-indium-gallium-selenide (CIGS) bottom cell. The previous record of 24.6%, held by Germany’s HZB since February 2025, had stood as a barrier in this configuration; Tokyo City’s result is the first published crossing of the 25% mark for a perovskite-CIGS architecture.
The perovskite-CIGS pairing is interesting precisely because it avoids the silicon supply chain. Where perovskite-on-silicon tandems leverage existing silicon factories, perovskite-on-CIGS combines two thin-film technologies that can be deposited on flexible substrates with much lower material and energy inputs per watt. CIGS uses abundant elements throughout the stack, and the perovskite top cell uses tunable, solution-processable absorbers.
For the resource-abundance question, the relevant comparison is not perovskite versus silicon at headline efficiency — silicon tandems still lead — but cost per watt at scale across the full supply chain. Each percentage point in perovskite-CIGS efficiency shifts the calculus toward solar manufacturing that doesn’t depend on polysilicon refining capacity, which has been a recurring bottleneck for the broader photovoltaic industry.
Source: pv magazine
University of Hong Kong’s SS-H2 Stainless Steel Cuts Seawater Electrolyzer Cost by 40×
A University of Hong Kong team announced a new stainless steel formulation, designated SS-H2, that they report can replace titanium in seawater electrolyzers at roughly one-fortieth of the materials cost. Seawater electrolysis has long been considered the most desirable approach to green hydrogen because it sidesteps the freshwater demands of conventional electrolyzers, but chloride corrosion has forced designers to specify titanium for the electrode and structural components — pricing the technology out of most use cases.
SS-H2 reportedly demonstrates the corrosion resistance needed for direct seawater operation while costing what stainless steel costs, which is what stainless steel has always cost. The HKU group’s published characterization suggests the alloy’s surface chemistry, rather than bulk composition, produces the chloride tolerance — meaning the input materials are essentially the abundant elements found in conventional stainless.
If the durability data holds up under independent replication, the implications extend beyond hydrogen. Chloride-tolerant structural steels would relax constraints across desalination plants, offshore renewable installations, and marine industrial equipment. The result is most useful as a reminder that some “rare materials” problems are really “we never developed the cheap version” problems.
Source: Fuel Cells Works
USA Rare Earth Awarded $14.2M Texas Grant for Round Top Heavy Rare Earth Project
The State of Texas awarded USA Rare Earth $14,177,600 from the Texas Semiconductor Innovation Fund on May 12 to accelerate development of the Round Top Mountain heavy rare earth project. The grant supports a project the company expects to generate approximately 260 jobs and represent more than $1.4 billion in capital investment in West Texas.
Round Top is one of the few known U.S. deposits of heavy rare earth elements — the subset of rare earths most critical for high-performance permanent magnets used in electric vehicle motors, wind turbines, and defense systems. The deposit contains 15 of the 17 rare earth elements along with lithium and other critical metals. China currently dominates global heavy-rare-earth processing and magnet manufacturing, a concentration that has driven a decade of policy attempts to seed alternative supply chains.
USA Rare Earth has separately commissioned Phase 1a of a commercial magnet manufacturing line in Stillwater, Oklahoma, and a pending $1.6 billion Department of Commerce CHIPS funding agreement. The Texas grant is small in dollar terms relative to that federal package but signals state-level alignment on accelerating the timeline. As with most resource-extraction stories, the question is not whether the deposit exists but whether the surrounding processing infrastructure can be built before the next price cycle resets the economics.
Source: GlobeNewswire
Meatly Raises £10.4M to Build Europe’s Largest Cultivated Meat Bioreactor
Meatly, a UK cultivated-meat startup focused initially on the pet food market, closed a £10.4 million Series A led by Oyster Bay. The funding will build a 20,000-litre bioreactor facility in London — what the company says will be Europe’s largest production site for cultivated meat. First commercial product releases from the new site are projected for 2027.
The pet food angle is strategic. The cultivated-meat industry has spent the past several years navigating the gap between technical feasibility and consumer acceptance, with several human-facing brands — Believer Meats, Meatable, SciFi Foods — winding down operations as the timeline to price parity stretched. Pet food bypasses both the regulatory ceiling and the consumer-trust ceiling, offering a higher-margin entry market while the underlying bioprocess scales.
The bioreactor size is the meaningful number. Cell-cultivated production economics improve sharply with vessel volume, and 20,000 litres is roughly the inflection point where cost-per-kilogram begins to approach commodity protein pricing for premium applications. Meatly’s facility is not the largest globally — several U.S. and Asian sites are larger — but it is the first European site at that scale, which matters for regulatory pathways under EU and UK frameworks.
Source: Green Queen
Kraig Biocraft Details Immortalized Silkworm Silk Gland Cell Platform
Kraig Biocraft Laboratories provided expanded technical detail on May 20 about an immortalized silkworm posterior silk-gland cell line the company first announced two days earlier. The platform’s distinguishing feature is that it secretes target proteins continuously into the surrounding media, rather than the cell-killing extraction process used in conventional baculovirus-based insect cell expression systems.
In standard insect-cell production, cells are infected with a baculovirus that drives them to produce a target protein, then sacrificed to recover the product. Each batch requires a fresh culture cycle. Kraig’s immortalized line, the company says, exploits natural exocytosis — the same secretion machinery silkworms use to produce silk in vivo — so the same cells produce repeatedly across extended cycles without lysis. If validated at production scale, the system would shorten the path from gram-scale lab quantities to ton-scale industrial output for engineered silk proteins.
Engineered spider silk has been an aspirational biomaterial for two decades, with applications in medical sutures, lightweight ballistic fabrics, and high-performance textile blends. The bottleneck has consistently been production cost. A continuous-secretion platform is the kind of process-engineering shift that could move spider silk from “demonstrated possible” to “available in industrial quantities” — and the same approach would generalize to other recombinant proteins where current intracellular production limits scale.
Source: Kraig Biocraft Laboratories
Heat-Stable Cutinase Brings Enzyme PET Recycling Closer to Commercial Temperatures
A research review published in early May highlighted progress on heat-stable cutinases — enzymes naturally evolved to degrade plant cuticles — engineered to operate near 70°C against polyethylene terephthalate (PET). PET accounts for roughly 70 million metric tonnes of annual plastic production globally, the bulk going to beverage bottles and synthetic textile fibers, and an estimated 85–90% of it is currently incinerated or landfilled rather than recycled.
The temperature target matters because PET’s glass transition sits around 70°C — the point at which polymer chains become accessible enough for enzymatic attack at commercially viable rates. Earlier engineered cutinases worked, but only at temperatures where the enzymes themselves denatured quickly, making sustained operation impractical. Heat-stable variants close that window: the enzyme survives in the same temperature range where PET is depolymerizable, enabling continuous-flow operation.
Enzyme-driven PET recycling has the conceptual advantage over thermal or chemical depolymerization of running at much lower energy input — a chemistry problem solved by molecular recognition rather than brute heat. The remaining challenges are enzyme cost (genetic engineering plus fermentation) and pre-processing the contaminated PET streams that dominate real-world waste flows. The 70°C class of cutinases is the first generation that looks like it could compete with virgin PET on cost in dedicated post-consumer streams.
Source: MDPI Blog
Electrochemical Route Produces Cement With Near-Zero CO₂ Footprint
The American Chemical Society announced in a May 2026 press release that researchers had developed an electrochemical route to producing low-carbon cement, attacking what is currently estimated at roughly 8% of global CO₂ emissions. Conventional Portland cement production releases CO₂ from two sources: the fuel burned to heat the kiln (decarbonizable with clean electricity) and the calcination reaction itself, which liberates CO₂ as limestone breaks down to lime. The chemistry, not just the energy, has been the harder problem.
The electrochemical approach reframes the calcination step. Rather than driving CO₂ release by heating limestone, the process uses an electrolytic cell to separate calcium and produce a precursor compatible with cement clinker formation, while routing carbon to a capturable side stream rather than to the atmosphere. Powered by clean electricity, the process can in principle approach a zero-emissions cement.
Cement is harder to decarbonize than steel or aluminum because the chemistry resists substitution: Portland cement’s behavior is the result of a specific calcium-silicate hydration system that is difficult to replicate with alternative inputs. Electrochemical routes are appealing because they preserve the underlying chemistry while changing how the precursors are produced. Scale-up will be the test — cement is a low-margin, high-volume commodity, and the electricity demand for electrochemical production is non-trivial.
Source: American Chemical Society
TOMRA Unveils AI-Native Recycling Platform With PolyPerception
TOMRA Recycling, the Norwegian sorting-equipment company, unveiled an AI-native recycling platform built on the PolyPerception deep-learning system at IFAT 2026 in Munich and increased its investment in PolyPerception to a 51% majority stake. Alongside the platform launch, TOMRA introduced three new deep-learning applications for its GAINnext sorting technology: PET tray differentiation, copper-steel composite identification, and high-throughput used-beverage-can recycling.
The new applications are tuned to the categories that have historically defeated optical sorting. PET trays — the takeaway and supermarket packaging that has expanded as a category over the past decade — were previously sorted by gross polymer type, lumping food-grade and non-food-grade material together. The GAINnext system now distinguishes them by shape and use cues, reportedly achieving over 95% purity. The copper-steel “copper meatball” application targets motor armatures and similar composites that resist conventional separation, supplying a steel industry that increasingly needs decontaminated scrap to decarbonize. The used-beverage-can application claims up to 33× the throughput of manual sorting at 98% purity or higher.
The pattern across the three applications is the same: AI-driven sorting is converting categories of waste from “uneconomical” to “recyclable” without changing the underlying chemistry. The implication for resource abundance is that the supply curve of secondary materials shifts upward as recognition accuracy improves, even before any new collection infrastructure is built.
Source: TOMRA