u/intengineering

DTE Energy has completed the 100 MW Cold Creek Solar Park near Coldwater, Michigan, a $194 million project funded through Ford's commitment to buy up to 650 MW of clean power. By the end of 2027, every Ford vehicle built in Michigan is meant to run on 100% carbon-free electricity, though the timeline slipped from the original 2025 target and neither company explained why.

The park can power roughly 23,000 to 25,000 homes, with a 75 MW battery system coming online to store daytime solar for evening demand. Ford's participation is estimated to offset up to 600,000 tons of CO2 annually once fully implemented, part of a broader push to move all its global factories to carbon-free power by 2035.

Researchers at Hebrew University of Jerusalem tracked how cocaine progressively narrows behavior, and by the fifth day of repeated exposure, one action, licking the enclosure's walls, took up over 60% of observed time, something almost never seen without the drug.

The team traced this to the ventrolateral striatum, where two competing pathways decide which actions get expressed. Activating one pathway instantly broke the repetitive behavior, while boosting the other, even without any cocaine, was enough to produce the same rigid pattern on its own. The findings suggest cocaine doesn't create new behavior, it hijacks an existing circuit, a mechanism that may extend to other conditions involving repetitive or rigid behavior, like Tourette syndrome and Parkinson's disease.

Perovskite solar cells promise to beat silicon's physical limits, but stacking three layers together to catch more sunlight has one nasty catch: high-bromide films dry unevenly, cracking and wrinkling as the top hardens while the bottom stays wet. Researchers at Nanjing University fixed this with a dual processing trick, a targeted solvent bath paired with a chloride additive that forces all the material's components to crystallize at the same time.

The fix produced a smooth, defect-free triple-junction cell hitting a record 30.1% power conversion efficiency, independently certified at 29.3%, and it held onto over 90% of that efficiency after 569 hours of continuous operation. Because it skips heavy silicon wafers entirely, the approach points toward ultralight, flexible solar panels for roofs, wearables, and even satellites, with researchers now working to push efficiency past 35%.

Shout into an irregularly shaped room and your voice shatters into pure chaos, physicists call this a "dynamical billiard," and it's been a headache for optical and acoustic engineers forever. Researchers at CUNY's Advanced Science Research Center found that passing waves through hyperbolic materials, media that restrict wave travel to narrow, highly directed paths, stops that chaos completely and forces the waves into stable, repeating geometric loops instead.

The team proved this by controlling vibrations in an engineered mechanical metamaterial, and the same math applies to real 2D materials like hexagonal boron nitride, opening the door to low-loss nanophotonic circuits and highly sensitive biosensors. Oddly enough, the underlying physics traces back to deep-sea oceanography, where internal ocean waves hitting underwater slopes lock into similar closed trajectories that trap energy beneath the surface.

Corsica gets stuck with a classic island problem: solar plants generate more power on sunny days than the grid can absorb, so some of it just gets thrown away. Renewable producer Corsica Sole just opened a 150-kW electrolyzer at its Folelli solar plant that grabs that surplus power instead of wasting it, splitting water into hydrogen using 60 electrolyzers.

The pilot, called Folell'Hy, can produce about 44 pounds of hydrogen daily and store up to 507 pounds on site. First in line to use it is a hydrogen-powered training vessel at a local maritime school, with heavy transport and off-grid power floated as next possible uses. Whether curtailed solar power can realistically support hydrogen at any real scale is exactly what this pilot is built to find out.

Researchers at Huazhong University of Science and Technology analyzed urine samples from nearly 4,900 pregnant women in Wuhan, measuring 13 rare earth elements. A 1 microgram-per-gram increase in an individual element was linked to a 25.6% to 51.4% higher odds of low birthweight, and combined exposure to all 13 elements roughly doubled the odds, with cerium driving nearly half that effect.

The study found no link to babies being small for gestational age, only to birthweight, and the researchers call it an association, not proof of cause, since exposure was measured from just one urine sample. They're now pushing for larger studies that track exposure throughout pregnancy.

Researchers at the University of Groningen discovered that tin-based perovskite solar cells can slow down heat loss from super-charged "hot electrons" by a factor of 1,000, something the team initially doubted their own measurements on. Normally, these high-energy electrons dump their extra energy as waste heat in a fraction of a trillionth of a second, long before that energy can be turned into usable electricity.

Digital simulations revealed a double mechanism at play: a "hot phonon bottleneck" that lets electrons reabsorb their own escaping heat, plus a "Burstein-Moss effect" that creates a traffic jam blocking electrons from cooling down. Together they stretch that energy-loss window from picoseconds to nanoseconds. Commercial panels using this effect are still a ways off, but the team says it could theoretically push solar cell efficiency past the long-standing 33% theoretical limit.

A 6 megawatt floating solar array is now generating power on a reservoir in Monroeville, Ohio, using 9,222 solar modules spread across three floating islands. Built by D3Energy, it's the largest floating solar installation in the state and ranks among the five largest in the US, feeding electricity straight into the village's grid.

The floating design let Monroeville skip roughly 30 acres of farmland a similarly sized ground-mounted project would have needed, using just 12 acres of water instead. That matters in Ohio, where about a third of counties have restricted large solar installations since a 2021 law gave them more control over such projects. Combined with an existing 4 MW ground-mounted facility from 2017, the village now runs on about 13 times more solar capacity per resident than the state average.

Volvo Trucks has begun series production of its next-generation electric trucks at its Gothenburg factory, led by the FH Aero Electric with extended range. A new e-axle frees up extra space for batteries, pushing the truck's max range to 435 miles per charge while still supporting megawatt charging and heavy payloads.

Alongside it, Volvo is also producing updated FH, FM, and FMX Electric models with ranges up to 292 miles, bringing the company's electric lineup to eight models covering everything from urban delivery to long-haul freight. Separately, Volvo introduced a heavy-duty electric truck rated for combinations up to 88 tons, using a 640 kWh battery and supporting both megawatt and CCS2 charging, aimed at markets that regularly haul above-average loads.

Researchers at Hebrew University have identified three quantum materials, titanium diselenide, strontium ruthenate, and hole-doped diamond, that could dramatically boost the search for light dark matter. Each material hosts low-energy electronic excitations called plasmons, which naturally amplify the extremely faint energy signals dark matter particles are expected to leave behind when they interact with ordinary matter.

Using first-principles quantum simulations, the team found detectors built from these materials could outperform today's leading detector materials across a wide range of particle masses, with titanium diselenide potentially improving sensitivity by two to three orders of magnitude. Two of the materials also show directional sensitivity, meaning their signal shifts based on the orientation of incoming particles relative to the crystal structure, creating a daily pattern as Earth rotates that could help separate real dark matter signals from background noise. All three materials can already be made with existing manufacturing techniques, with titanium diselenide especially suited for scaling up.

Researchers at Hong Kong University of Science and Technology developed a printable building material that uses Mars's extreme cold and near-vacuum atmosphere to its advantage instead of fighting it. The mixture combines sand, gelatin, and engineered yeast coated in mussel-inspired sticky proteins, and when printed under simulated Martian conditions, the cold instantly freeze-dries it into a lightweight, porous foam, the same principle behind freeze-dried fruit.

Small test domes already match the strength of low-grade concrete, with compressive strength between 10 and 12 megapascals, enough for a multistory building even under Mars's lower gravity. Unlike older proposals that melt Martian soil into bricks using huge amounts of energy, this method skips high-heat processing entirely, and old structures could even be broken down to recover and regrow the living yeast inside bioreactors. Researchers still need to confirm the yeast can survive real Martian radiation, and early missions would still require shipping raw materials from Earth before local production takes over.

ETH Zurich researchers built a new model showing low-CO2 concrete's lifespan depends heavily on local climate, not just the mix itself. Testing three concrete types across four cities, they found moisture drives steel corrosion far more than differences between mixes, with steel rusting up to 100 times faster in wet concrete than dry.

Even cities with nearly identical rainfall produced very different corrosion rates, since how quickly concrete absorbs and dries mattered more than total precipitation. Current durability standards group climates together in ways that miss these differences, suggesting concrete choice may need to match local weather rather than follow one-size-fits-all rules. The model still needs testing on real buildings before it can shape construction standards.

A previous proposal suggested cooling about one million radioactive rubidium-83 atoms into a Bose-Einstein condensate to create a laser-like beam of neutrinos through collective emission. New MIT calculations show the idea hits fundamental quantum roadblocks no engineering fix can solve: the recoil from each neutrino destroys the coherence collective emission needs, krypton-83 atoms are fermions so the Pauli exclusion principle blocks the decay chain after one step, and the neutrino's tiny wavelength makes the emission cone too narrow for real amplification.

Together, the findings show the neutrino laser isn't just hard to build, it's blocked by nature itself.

Sixty years after the original 1966 Jensen Interceptor debuted, Jensen International Automotive has revealed the Interceptor GTX, a clean-sheet design rather than a restomod or reinterpretation of the classic. The car pairs a hand-built aluminum body with an all-aluminum chassis, built for what the company calls a fully analogue driving experience with no electrification involved.

Power reportedly comes from a supercharged V8, with earlier reporting pointing to a 6.2-liter Chevrolet unit shared with the Corvette. Jeff Qvale, son of former Jensen Motors owner Kjell Qvale, joined the project as a key partner, adding a direct family link to the marque's history. The GTX arrives first as a track-only, pre-production special, meant to lay the groundwork for future road-going Interceptor variants.

Austrian battery diagnostics company Aviloo has published what it calls the largest independent study of used EV battery health, drawing on over 500,000 real-world tests across 20 popular models from 2022 to 2026. The standout performer was the Hyundai Ioniq 5, holding a median state of health of 97.2% at 50,000 km, 95% at 100,000 km, and still 92.8% at 150,000 km.

That puts Hyundai comfortably ahead of Tesla, whose Model Y landed at 90.3% state of health at 150,000 km, with the Model 3 slightly lower at 88.94%. Smaller EVs with modest battery packs fared worse overall, including the older Nissan Leaf ZE1, Renault Zoe, and first-gen Mini Cooper SE, all landing in the mid-to-high 80s at the same mileage. The report reinforces a pattern showing up across multiple independent studies this year: battery longevity depends heavily on chemistry and thermal management, not just brand reputation or price point.

Before copper forms the familiar green patina seen on old roofs, its surface passes through a strange intermediate structure called the "29" surface oxide, packed with oxygen but never fully explained. Using a technique called Auger photoelectron coincidence spectroscopy, researchers led by Alexander Föhlisch directly measured the copper atoms in this layer and found their oxidation state sits at only around 0.3, much closer to pure metallic copper than to conventional copper oxides, despite all that oxygen on the surface.

The discovery matters for catalyst design, since copper is widely used in reactions like CO2 reduction and methanol synthesis, and the most active sites often aren't purely metallic or fully oxidized. It could also help explain how copper corrodes over long timescales, which is relevant to proposed nuclear waste containers that rely on copper's corrosion resistance to isolate spent fuel underground.

Researchers at the Korea Institute of Energy Research achieved a certified 26.7% efficiency for a perovskite/CIGS tandem solar cell, a new world record verified by Germany's Fraunhofer Institute. The design stacks a perovskite layer over CIGS so each captures different parts of sunlight, with a top layer absorbing blue and UV light while letting longer wavelengths pass through to the layer below.

The team's real breakthrough was solving the damage that normally occurs when combining these delicate films, using a new protective layer and a re-engineered top electrode to cut both electrical losses and unwanted light absorption. That pushed raw lab results to 27%, beating the previous 26.3% record set just a year earlier. Because the cells are thin, flexible, and lightweight, they're a strong candidate for satellites, orbital data centers, and other space applications where every gram counts. KIER is now working with industry partners to scale the technology toward commercial production.

Tesla has deployed dozens of purpose-built Cybercabs on public roads in Austin, and unlike the company's existing robotaxi fleet, these have no steering wheel, brake pedal, or emergency controls, meaning riders can't take over if something goes wrong. It's a step beyond Tesla's supervised robotaxi service running since June 2025, which still used vehicles with conventional controls.

Tesla relies entirely on cameras and AI for self-driving, while rivals like Waymo and Zoox add radar and lidar, making Austin a real test of whether Tesla's approach holds up without those extra sensors. The company runs 200+ unsupervised robotaxis in Texas and Florida, still far behind Waymo's 4,000+ vehicles across 14 cities. A recent Pew survey found seven in ten US adults uncomfortable riding in a driverless car, so public trust may be as big a hurdle as the technology itself.

Researchers from the University of Ulm, Oxford, and Ben-Gurion University built a device called the Quantum Galileo Interferometer to test whether Einstein's equivalence principle, the idea that gravity vanishes locally for anything in free fall, holds true for quantum objects. They used ultracold rubidium atoms placed in quantum superposition, so each atom traveled two paths at once, then held one path stationary against gravity while letting the other fall freely before recombining them.

The measured phase difference between the two paths matched Einstein's prediction exactly, marking the first direct measurement of this effect for a freely falling quantum object. The result doesn't unify quantum and classical physics, but it shows gravity behaves as expected even at the quantum scale, and opens the door to testing whether the same holds for larger, more massive objects.