Chinese researchers at Wuhan University successfully implanted lab-grown "tooth buds" into adults, which developed into full functional teeth within 6 months. All 38 trial participants grew replacement teeth naturally.

 

Chinese researchers at Wuhan University successfully implanted lab-grown "tooth buds" into adults, which developed into full functional teeth within 6 months. All 38 trial participants grew replacement teeth naturally.

The tooth buds are created by combining stem cells from the patient's dental pulp with a special scaffold that guides growth. Once implanted in an empty tooth socket, the bud develops roots, enamel, and nerves just like a child's tooth would. Think of it as replanting the seed of a tooth you already lost.

China approved the procedure for widespread clinical use in 2025. The FDA requires an additional 15-20 years of American trials, citing safety concerns despite thousands of successful Chinese cases. The dental implant industry, worth $6 billion in the US, would face existential threat from natural tooth regrowth.

American adults missing teeth face a choice: metal implants costing $4,000-$6,000 each with 20-year lifespans, or dentures costing $2,000+ requiring lifetime replacement. Natural regrown teeth would eliminate both markets.

Why does US medicine take 20 years to approve what China proves works today?

Source: Wuhan University School of Stomatology & Journal of Dental Research, February 2026

#ToothBuds #DentalStemCells #ChinaScience #FDAdelays #ToothRegrowth #DentalIndustry #RegenerativeDentistry #NaturalTeeth #DentalImplants #FutureOfDentistry

 

Những pin xe điện tốt nhất sau 100.000 km

Phân tích gần 10.000 bộ pin xe điện cho thấy dung lượng đều giữ trên 90% sau 100.000 km, với những cái tên vượt trội.

Nhiều năm trước, người mua xe điện có lý do để lo lắng về tuổi thọ của bộ pin. Tuy nhiên, công nghệ pin đã tiến một bước dài kể từ khi xe điện trở nên phổ biến. Một nghiên cứu mới tại Thụy Điển đã đưa ra con số cụ thể về dung lượng pin còn lại sau 62.000 dặm (khoảng 100.000 km) vận hành, và kết quả có thể khiến nhiều người bất ngờ.

Nghiên cứu do nền tảng mua bán xe trực tuyến Carla thực hiện, dựa trên kết quả kiểm tra 9.954 bộ pin xe điện bán ra tại Thụy Điển giai đoạn 2022-2026. Đơn vị này sử dụng thiết bị chẩn đoán của Aviloo để đo độ bền thực tế thay vì phụ thuộc vào thông số hiển thị trên xe. Sự khác biệt này rất quan trọng, bởi dữ liệu từ bảng đồng hồ đôi khi đưa ra bức tranh màu hồng hơn thực tế.

Xe điện Kia e-Niro tại Thụy Điển. Ảnh: KVD

Kia e-Niro vươn lên dẫn đầu khi giữ được tới 97,25% dung lượng ban đầu sau 100.000 km. Mẫu xe này dùng chung bộ pin 64 kWh với Hyundai Kona - dòng xe xếp ngay sau với tỷ lệ 97,18%. Tập đoàn Hyundai chiếm trọn top 3 nhờ Kia EV6 (bản pin 77,4 kWh).

Mẫu xe điện châu Âu có kết quả tốt nhất là Volvo XC40 Recharge dùng pin 69 kWh của CATL, duy trì 94,70% dung lượng. Theo sát phía sau là Polestar 2 (pin CATL 78 kWh) với 94,35%. Các vị trí tiếp theo thuộc về BMW i3 và phiên bản Polestar 2 dùng pin LG Chem, đạt lần lượt 93,77% và 93,53%.

Mẫu xe có thứ hạng cao nhất của thương hiệu xe điện Mỹ Tesla là Model 3 bản pin LFP 60,5 kWh từ CATL, giữ lại 93,34% dung lượng. Kết quả này nhỉnh hơn một chút so với phiên bản Model 3 dùng pin NMC của LG Chem (91,5%).

Các mẫu xe khác góp mặt trong top 20 gồm có Audi e-tron 50 và 55 (đạt 93,02% và 92,93%), Skoda Enyaq iV (92,88%), Tesla Model S (92,80%), Volkswagen ID.4 (92,77%) và Tesla Model X (92,52%).

Bài học lớn nhất từ nghiên cứu này là nỗi sợ pin hỏng sớm không còn đúng. Mọi mẫu xe trong danh sách xếp hạng đều giữ được hơn 90% dung lượng sau 100.000 km di chuyển - mốc quãng đường mà phần lớn chủ xe phải mất 3-4 năm mới đạt tới. Bộ pin hiện có tuổi thọ đủ dài để tồn tại lâu hơn chính chiếc xe chứa nó.

Mỹ Anh

Đọc bài gốc tại đây.

Những pin xe điện tốt nhất sau 100.000 km

the Gurkha who fought on with one hand and an iron will, turning a hopeless position into a legend.

 

In the spring of 1945, Gurung’s unit of the 4th Battalion, 8th Gurkha Rifles was defending a remote outpost at Taungdaw, Burma, when a Japanese force of roughly 200 men launched a furious night assault. Gurung, then 32, was positioned at a forward trench with two other Gurkhas when the enemy began hurling grenades into their position.

Twice he caught grenades and threw them back. The third landed at his feet and exploded before he could react. The blast tore off his right hand, shattered his arm, and wounded his face and torso. His two comrades were killed instantly. Gurung, alone, bleeding, half‑blinded, refused to fall back.

He wedged his Lee–Enfield rifle under his left arm, braced the stock against the trench wall, and began firing one‑handed into the darkness. The Japanese kept charging, convinced the position was already overrun. Gurung answered every movement with a shot.

For four hours he held that tiny patch of earth by himself, shouting “Ayo Gorkhali!” as he fired, the ancient Gurkha battle cry echoing through the smoke. When dawn broke, the ground in front of his trench was littered with bodies. Thirty‑one enemy soldiers lay dead, all killed by a man who had lost his dominant hand and refused to surrender an inch.

When his unit finally reached him, they found Gurung still in the trench, rifle in hand, refusing evacuation until the attack was fully repelled. His actions saved the entire company’s flank and prevented a breakthrough that could have cost hundreds of lives.

For his unmatched courage, he was awarded the Victoria Cross, the highest award for gallantry in the British Empire. Gurung survived his wounds, returned home to Nepal, and lived to old age, remembered as the Gurkha who fought on with one hand and an iron will, turning a hopeless position into a legend.

#fearless #thehistoriansden

The Historian's Den

A piece of SpaceX Falcon 9 hardware is set to hit the Moon on August 5, 2026, near Einstein Crater

 

A piece of SpaceX Falcon 9 hardware is set to hit the Moon on August 5, 2026, near Einstein Crater — and scientists know the exact predicted time: 06:35 UTC.

The object, designated 2025-010D, is the upper stage of a Falcon 9 rocket launched in January 2025, which had successfully delivered two private robotic landers toward the Moon before being left drifting on its own trajectory. With no fuel remaining to return to Earth or maneuver into a different path, the stage has been on an unplanned collision course ever since.

The stage measures about 12 meters long and 4 meters wide, weighing roughly 4,000 kilograms, and is expected to strike the lunar surface at approximately 8,750 kilometers per hour — using tracking data calculated by astronomer Bill Gray and computer simulations detailed in a study on arXiv.

Because the stage is largely a hollow metal shell rather than a solid object, researchers expect it to behave very differently from a natural asteroid impact — collapsing on contact rather than punching through cleanly. Simulations suggest the impact will carve a new crater roughly 20 to 30 meters wide, while throwing a cloud of lunar dust several kilometers above the surface.

"Potential observables from this event include the flash at the time of impact… and the ejecta plume," the research team writes. Those two signatures — the brief flash of the collision and the rising dust cloud — are what astronomers hope to capture in order to compare against their predictive models.

The impact is expected to occur on the Moon's near side, giving Earth-based observers a genuine chance to witness it, though capturing the brief event will require cameras capable of very high-speed video recording. The study's authors are encouraging both professional astronomers and experienced amateur observers to participate in monitoring the event.

Beyond the spectacle, the researchers see practical scientific value: improving methods for precisely locating lunar impacts could directly inform how future lunar seismometers are deployed and interpreted, helping researchers better understand vibrations and structural activity beneath the Moon's surface.

Astronomy Space

Chinese biotech firms just launched a peptide gel that rebuilds tooth enamel, the hardest substance in the human body that never regenerates naturally.

 

Chinese biotech firms just launched a peptide gel that rebuilds tooth enamel, the hardest substance in the human body that never regenerates naturally. Once cavities form, dentists drill and fill, but this gel changes everything.

The gel contains tiny protein pieces that mimic the natural process babies use to build enamel in the womb. When applied to early cavities, minerals from saliva bond with the peptides and slowly rebuild the damaged surface. Imagine paint that literally becomes part of a wall, growing thicker over weeks. Early-stage decay reverses without any drilling.

The geopolitical drama is intense. The FDA has restricted several Chinese biotech imports citing "data verification concerns," while critics say the delays protect American dental supply companies. Some argue the tensions with China are being used to keep affordable dental innovations out of the US market entirely.

American families spend an average of $685 yearly on dental care, with cavities being the number one issue. Access to this gel abroad costs about $30 per tube, while similar peptide products approved in the US cost hundreds.

Should healthcare innovations transcend trade wars, or is caution justified?

Source: Shanghai Jiao Tong University School of Medicine, 2026

#EnamelRegeneration #PeptideGel #DentalScience #ChinaBiotech #FDApolitics #CavityCure #TradeWar #OralHealth #DentalCosts #HealthEquity

scientists note that they discovered that unique bacteria living in the contaminated waters of a flooded former Soviet mine in Germany possess the remarkable ability to neutralize toxic uranium.

 

Scientists just found a natural solution to nuclear waste.

In an article published in Nature Communications, scientists note that they discovered that unique bacteria living in the contaminated waters of a flooded former Soviet mine in Germany possess the remarkable ability to neutralize toxic uranium.

When fed glycerol as a carbon source under low-oxygen conditions, these microbes convert soluble, highly toxic uranium into a rare, stable compound called FeU(V)O4. Over a 130-day period, the bacteria successfully removed approximately 95% of the dissolved uranium from water samples, locking it away safely within their cell walls as solid minerals.

This biological process offers a game-changing alternative to traditional, expensive water treatments that typically produce hazardous secondary sludge. By safely binding the uranium in a stable, solid state even when exposed to oxygen, these natural microscopic allies could revolutionize environmental cleanup. Because uranium contamination is a persistent global threat affecting groundwater systems in the United States, Canada, and Australia, researchers are optimistic that this bioremediation method can be adapted to secure toxic waterways worldwide.

source: Newman-Portela, A. M., et al. (2026). Pentavalent and tetravalent uranium formation via glycerol-stimulated bacteria in mine water. Nature Communications, 17(1), 4030.

Neil deGrasse Official

 

The Giant UK Battery Can Inject Hundreds of Megawatts into the National Grid in Less Than One Second

 

The Giant UK Battery Can Inject Hundreds of Megawatts into the National Grid in Less Than One Second

The UK is home to the Minety Battery Energy Storage System in Wiltshire, one of the world's largest battery storage facilities. It can store 320 megawatt-hours (MWh) of electricity across a site covering about 35 football pitches, helping balance the country's electricity supply.

One of Minety's biggest advantages is its incredible speed. During sudden power shortages, unexpected spikes in electricity demand, or drops in wind generation, the battery system can deliver hundreds of megawatts of electricity to the grid in less than one second.

This rapid response helps keep the UK's grid frequency close to its required 50 Hz, ensuring a stable and reliable electricity supply. In the past, gas-fired peaker plants handled these emergencies, but battery storage can react much faster while producing no direct carbon emissions.

Battery energy storage is expanding rapidly across the UK. More than 4 GWh of new grid-scale battery capacity was installed in 2023, exceeding the combined additions of the previous three years. Continued investment is expected to significantly increase storage capacity by 2026.

The success of projects like Minety shows that battery storage is becoming a key part of modern electricity infrastructure rather than just a backup technology. As renewable energy grows, large-scale batteries are expected to play an increasingly important role in reducing dependence on fossil fuel power plants.

Source: National Grid ESO - United Kingdom

Electrical Technology