r/STEW_ScTecEngWorld 4d ago

⚠️ Moderator Notice: Evidence-Based and Respectful Discussion Required

9 Upvotes

Our community is dedicated to science, technology, and engineering discussions that are informative, evidence-based, and welcoming to all members. As stated in Community Rule 9, AI-generated content is acceptable when supported by relevant information, references, or source material.

Members are encouraged to review the supporting information provided in posts before commenting. Constructive criticism, fact-based discussion, and respectful disagreement are always welcome. However, dismissive remarks, personal attacks, abusive language, trolling, or unsupported accusations do not contribute to meaningful dialogue.

If you believe a post contains inaccurate or misleading information, please raise your concerns respectfully in the comments or contact the moderator or original poster by direct message.

We also warmly encourage members to share interesting articles, research findings, engineering projects, innovations, and quality cross-posts from other communities. Diverse contributions help broaden conversations, introduce new perspectives, and make this community more engaging and attractive for everyone.

Repeated disruptive behavior may result in moderation action, taking into account a member’s overall participation history. Our goal, however, is always to promote respectful discussion, knowledge sharing, and positive engagement.

Thank you for helping us build a thoughtful, collaborative, and vibrant community.


r/STEW_ScTecEngWorld Jul 24 '26

🚀 Moderator Applications Now Open!

6 Upvotes

Join the r/STEW_ScTecEngWorld Moderation Team

Are you passionate about Science, Technology, Engineering, AI, Innovation, Space, Robotics, or Emerging Technologies? Do you enjoy building communities, encouraging meaningful discussions, and keeping online spaces informative and welcoming?

We're looking for enthusiastic volunteers to help grow r/STEW_ScTecEngWorld into one of Reddit's leading communities for science and technology enthusiasts.

About This Moderator Role: As a moderator, you'll help maintain a high-quality community by:

  • Reviewing posts and comments
  • Enforcing subreddit rules fairly and consistently
  • Removing spam, misinformation, and low-quality content
  • Encouraging respectful and evidence-based discussions
  • Helping answer member questions
  • Assisting with community events, AMAs, contests, and themed discussions
  • Suggesting ideas to improve the subreddit
  • Working collaboratively with the moderation team

What We're Looking For: We welcome applicants who are:

  • Passionate about science, technology, engineering, or innovation
  • Active Reddit users
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  • Fair and unbiased when making moderation decisions
  • Good communicators
  • Team players willing to collaborate with other moderators
  • Interested in helping build a long-term community

Preferred Qualifications: The following are helpful but not required:

  • Previous Reddit moderation experience
  • Academic or professional background in STEM
  • Experience in research, engineering, programming, AI, robotics, or related fields
  • Familiarity with Reddit's Moderator Tools and Automoderator
  • Graphic design or community management experience
  • Experience organizing online communities or events

Minimum Requirements: Applicants should:

  • Have a Reddit account in good standing
  • Follow Reddit's Content Policy
  • Be able to moderate at least a few times each week
  • Be willing to communicate with the moderation team
  • Exercise sound judgment and remain respectful, even during disagreements

What You'll Gain: As a moderator, you'll have the opportunity to:

  • Help shape a growing STEM community
  • Collaborate with knowledgeable people worldwide
  • Learn Reddit moderation tools and community management
  • Develop leadership and communication skills
  • Contribute to promoting science, engineering, and technological literacy

Moderator Expectations: Our moderators are expected to:

  • Act with integrity and impartiality
  • Keep discussions civil and evidence-based
  • Respect differing viewpoints
  • Maintain confidentiality regarding moderator discussions
  • Remain active or notify the team if taking an extended break

Time Commitment: There is no fixed schedule. Most moderators contribute anywhere from 15–60 minutes per week, depending on their availability. Real life always comes first.

Application Questions: Please answer the following:

  1. Tell us a little about yourself.
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  3. Why do you want to moderate r/STEW_ScTecEngWorld?
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  5. How active are you on Reddit?
  6. Which time zone are you in?
  7. Approximately how many hours per week can you volunteer?
  8. Have you ever had moderator privileges removed or been banned from a subreddit? If yes, please explain.
  9. What would you do if two members were engaged in a heated argument?
  10. What ideas do you have to help grow our community?

Before You Apply: Moderating is a volunteer role.

We're looking for people who genuinely want to help create an informative, welcoming, and high-quality STEM community for everyone.

If that sounds like you—we'd love to hear from you!

Applications are reviewed on a rolling basis. Selected applicants will be contacted via Reddit Modmail or Direct Message.


r/STEW_ScTecEngWorld 20h ago

Canadian startup Brings Multi-Arm AI Harvesting to Romaine Lettuce

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335 Upvotes

Canadian startup Sami Robotics is expanding its SAMI robotic harvesting platform from broccoli to romaine lettuce, one of the crops still heavily dependent on manual harvesting. SAMI uses 12–18 robotic arms working simultaneously, with AI and machine vision identifying harvest-ready heads; each arm can complete a picking cycle in under three seconds. In July 2026, Sami became the first recipient of a Western Growers-sponsored residency at Reservoir Farms in Salinas, California, where the technology is being tested and refined under real commercial farming conditions.

Info sources:

  1. Western Growers Center for Innovation & Technology Selects Sami Robotics for First Sponsored Residency at Reservoir Farms: https://www.wga.com/press-releases/western-growers-center-for-innovation-technology-selects-sami-robotics-for-first-sponsored-residency-at-reservoir-farms/

  2. SAMI platform and capabilities: https://samirobotics.com/en

  3. Sami Robotics scales up broccoli harvesting as it builds towards a multi-crop, multi-task platform: https://www.futurefarming.com/crop-solutions/sami-robotics-scales-up-broccoli-harvesting-as-it-builds-towards-a-multi-crop-multi-task-platform/

  4. SAMI Robotics Becomes First Recipient of the Western Growers–Reservoir Farms Sponsorship Program: https://www.wga.com/news/sami-robotics-first-recipient-western-growers-sponsorship-program/


r/STEW_ScTecEngWorld 10h ago

Ecological collapse in the world’s largest mangrove forest is a preview of what’s to come

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40 Upvotes

Climate change is already leading to lasting damage to the Sundarbans mangrove forest and causing families and farmers to lose their livelihoods.


r/STEW_ScTecEngWorld 11h ago

Trust is a behavior, not a credential – and that explains the Rodgers-Fauci divide

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19 Upvotes

Viewing trust as behaviors, not feelings, can help explain why some heed Aaron Rodgers’ advice over Dr. Fauci’s – and what experts can do about it


r/STEW_ScTecEngWorld 21h ago

Heat Turns Into Cold: Electricity-Free Solid-State Cooling

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74 Upvotes

Researchers at the Karlsruhe Institute of Technology (KIT), Germany and the University of Tsukuba, Japan have developed the world’s first heat-driven, solid-state elastocaloric cooling system that uses thermal energy instead of electricity. The device uses two ultra-thin nickel-titanium shape-memory films: one converts heat into mechanical motion, while the other uses that motion to produce cooling through elastocaloric effects. In laboratory tests, the prototype achieved a 12.9°C temperature difference in the refrigerant and operated using an external heat source of 130°C. The technology could eventually eliminate electric compressors and high-GWP refrigerants while using industrial waste heat, electronics heat, or vehicle heat to provide sustainable cooling: https://www.eurekalert.org/news-releases/1141913

Study: https://www.nature.com/articles/s41560-026-02122-6


r/STEW_ScTecEngWorld 10h ago

Germany breaks ground on major battery storage projects

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4 Upvotes

HyperStrong has begun building a 400 MW/1.6 GWh battery storage project in Germany for LEAG Clean Power, while Sunotec has also started installing a separate 100 MW/441 MWh system in the country.


r/STEW_ScTecEngWorld 1d ago

The First Quantum-Resistant Bitcoin Transaction Has Been Mined

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165 Upvotes

StarkWare researcher Avihu Levy successfully mined the first quantum-resistant Bitcoin transaction on mainnet using Quantum-Safe Bitcoin (QSB), a method designed to protect funds against future quantum computing attacks without requiring a network soft fork or protocol changes. By replacing vulnerable elliptic-curve signatures with hash-based cryptography, QSB functions within Bitcoin's existing rules as an emergency escape hatch for users to secure vulnerable funds. However, the approach serves primarily as a last resort rather than a standard payment method, as it requires substantial off-chain GPU computing power costing hundreds of dollars per transaction: https://thequantuminsider.com/2026/08/27/starkware-researcher-demonstrates-quantum-resistant-bitcoin-transaction/


r/STEW_ScTecEngWorld 1d ago

Engineering a World First: Light Rail Across Lake Washington’s Floating Bridge

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91 Upvotes

The Lake Washington I-90 floating-bridge light rail is an engineering first because railway tracks normally require a very stable, precisely aligned foundation, while the bridge itself moves with lake levels, wind, waves, temperature and train loads. Engineers strengthened the floating concrete pontoons with post-tensioning and developed the CESuRa (Curved Element Supported Rail) system, which uses bearings and curved supports to passively accommodate vertical, lateral and rotational movements at the transition between fixed and floating sections. More than 9,000 lightweight concrete blocks bonded with high-strength epoxy support the rails without drilling into the bridge deck, while measures address vibration, stray electrical currents and corrosion. Full-scale testing subjected the system to simulated bridge movements and train loads, collecting more than 500 channels of data and demonstrating safe operation up to 55 mph.

Learn more here

  1. Enabling an engineering first: Light rail on a floating bridge: https://www.ce.washington.edu/news/article/2017-08-15/enabling-engineering-first-light-rail-floating-bridge

  2. An innovative new monitoring system makes 2 Line service across Lake Washington possible: https://www.soundtransit.org/blog/platform/crosslake-explained-tracking-wind-wave-conditions-floating-bridge

  3. A Long Time Coming: Light Rail Across Lake Washington: https://www.soundtransit.org/blog/platform/long-time-coming-light-rail-across-lake-washington

  4. Sound Transit opens Cross Lake Connection, first light rail over I-90 bridge komonews.com/news/local/sound-transit-cross-lake-connection-interstate-90-bridge-bellevue-eastside-redmond-light-rail-netowrk-project-infrastructure-specialized-track-systems

  5. Video: https://www.youtube.com/watch?v=-tImk5T3iiU


r/STEW_ScTecEngWorld 11h ago

Where is AI headed? Two media theorists from the 1960s can help us figure it out

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3 Upvotes

AI is a kind of media – and we’ve seen before what new media can do to society.


r/STEW_ScTecEngWorld 20h ago

Study: Peptides can form well-defined structures in harsh, Venus-like conditions

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18 Upvotes

A new study by researchers at MIT, published in the Proceedings of the National Academy of Sciences, reveals that short peptides can remain stable and fold into functional shapes within concentrated sulfuric acid, mirroring the acidic cloud layer of Venus. Using advanced nuclear magnetic resonance (NMR) spectroscopy, the team found that the lack of water in 98 percent sulfuric acid prevents destructive hydrolysis, allowing peptides such as HHQ, HHQ13, and K7 to fold into distinct structural motifs known as "omega loops." Facilitated by sulfuric acid molecules acting as a scaffold, these findings challenge long-held assumptions about the harshness of Venus-like environments and significantly expand the possibilities for where complex, functional biomolecules might exist across the universe: https://phys.org/news/2026-08-peptides-harsh-venus-conditions.html


r/STEW_ScTecEngWorld 10h ago

Netherlands-based manufacturer announces 8 kWh AC-coupled residential battery

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2 Upvotes

Atmoce has launched an 8 kWh LFP residential battery featuring 5 kW output, extra-low-voltage architecture and 90% AC round-trip efficiency. The IP66-rated system offers up to 15,000 cycles, wall or floor mounting, and a 25-year warranty..


r/STEW_ScTecEngWorld 10h ago

NASA's doomed Swift space telescope restarts science work after rescue mission fails

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2 Upvotes

NASA's Neil Gehrels Swift Observatory has restarted science operations after an attempted orbital rescue mission by Katalyst Space's LINK spacecraft failed due to thruster and reaction wheel issues. Mission controllers re-enabled Swift's X-ray and Ultraviolet/Optical telescopes on August 26, following months in a low-drag configuration intended to preserve its altitude. Because the boost mission was called off, the nearly 22-year-old telescope's orbit continues to decay rapidly due to atmospheric drag, and NASA expects the spacecraft to re-enter Earth's atmosphere and burn up later this year.


r/STEW_ScTecEngWorld 1d ago

HelioSkin: Cornell’s Flexible Solar Fabric That Could Turn Buildings Into Power Generators

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920 Upvotes

Researchers at Cornell University are developing HelioSkin, a lightweight, stretchable solar-collection fabric designed to wrap around complex architectural surfaces. Inspired by how plants track the Sun, the system combines flexible photovoltaics, 3D printing, kirigami/auxetic geometry and mechanical movement to optimize sunlight capture.

Unlike conventional rigid solar panels, HelioSkin could potentially cover curved buildings, canopies, stadiums and other unconventional structures. Cornell’s team is currently developing prototype solar canopies, with a longer-term goal of creating solar “skins” that can track the Sun and integrate clean-energy generation directly into architecture.

The bigger idea: the future of solar power may not be limited to rooftops—it could become a flexible layer woven into the built environment.

Info sources:

  1. Solar solutions: Bio-inspired approach creates bespoke photovoltaics: https://news.cornell.edu/stories/2025/02/solar-solutions-bio-inspired-approach-creates-bespoke-photovoltaics

  2. Cornell Design Tech — HelioSkin project: https://designtech.cornell.edu/design-tech/design-tech-partnerships/

  3. HelioSkin — Jenny Sabin Design Lab, Cornell University: https://www.sabinlab.com/helioskin


r/STEW_ScTecEngWorld 12h ago

Tiny Telescope Aims for Big Astronomy From the Lunar South Pole

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1 Upvotes

r/STEW_ScTecEngWorld 1d ago

The FDA Just Approved The First US Freeze-Dried Plasma, Ready in Minutes

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23 Upvotes

The U.S. Food and Drug Administration (FDA) has licensed Ezplaz Freeze Dried Plasma, marking the first FDA-approved freeze-dried plasma product in the United States. Unlike conventional fresh frozen plasma, which requires freezer storage and time-consuming thawing equipment,Ezplaz can be stored at room temperature for up to 12 months and reconstituted with sterile water in about 2.5 minutes. Packaged in lightweight plastic bags to prevent breakage during transport, it is designed for emergency situations—such as battlefields, disaster zones, rural areas, and ambulances—where standard plasma is unavailable. Approved for adults with severe bleeding or those needing rapid reversal of blood thinners, the product retains a safety profile comparable to traditional plasma while offering critical logistical advantages in trauma settings: https://jamanetwork.com/journals/jama/fullarticle/2853282 

FDA Approval: https://www.fda.gov/news-events/press-announcements/fda-licenses-first-ever-freeze-dried-plasma-product-us


r/STEW_ScTecEngWorld 19h ago

New lithium isotope tech gets $7M to power advanced reactors

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2 Upvotes

New Mexico-based startup Molten Salt Solutions (MSS) has secured a $7 million seed funding round to scale its domestic isotope-enrichment technology, moving from laboratory validation to pilot-scale production. Led by Dolby Family Ventures, the investment aims to address supply chain bottlenecks for enriched lithium-6—used to breed tritium fuel for fusion reactors—and lithium-7, which is required for advanced molten salt fission reactors. Founded by Los Alamos National Laboratory alumni, MSS claims its platform is 100 times more efficient than legacy enrichment methods, bringing its total raised capital to over $15 million as it expands domestic production capacity for next-generation nuclear systems.


r/STEW_ScTecEngWorld 1d ago

AI Chatbots Aren’t as Private as You Think: Your Boss, Tech Companies, and Police May Be Able to Read Your Chatbot Conversations

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8 Upvotes

AI chatbot conversations may feel private, but they should not be treated like confidential conversations. A Washington Post review found numerous cases in which chatbot transcripts became part of criminal or civil court proceedings, often after investigators or opposing parties accessed users’ devices. Employers may also have access to chats made through workplace accounts, while AI companies can disclose information when legally required or when they believe there is an imminent risk of serious harm. Users should therefore avoid sharing passwords, highly sensitive personal information or confidential material—and use temporary/private chat options where available: https://www.washingtonpost.com/technology/2026/08/29/your-chatbot-discussions-are-not-private-you-may-think/

Human, Beware: The Secrets We Tell AI Chatbots Aren’t Private: https://www.cnet.com/tech/services-and-software/human-beware-the-secrets-we-tell-ai-chatbots-arent-private/

Your ChatGPT conversations could end up in court, and they're not protected: https://www.techspot.com/news/113667-chatgpt-conversations-could-end-up-court-theyre-not.html


r/STEW_ScTecEngWorld 1d ago

Arthritis drug restores 100% of hair on some patients with severe alopecia in global trial

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98 Upvotes

Two global Phase 3 clinical trials published in JAMA Dermatology revealed that upadacitinib (Rinvoq)—an oral JAK inhibitor commonly prescribed for rheumatoid arthritis—dramatically restored hair in patients with severe alopecia areata. The studies evaluated nearly 1,400 participants aged 12 to 64 who averaged an 84% loss of scalp hair at baseline. After 24 weeks of taking a daily 15 mg or 30 mg dose, roughly 45% to 55% of patients achieved 80% or greater scalp hair coverage, with a subset experiencing complete regrowth alongside notable improvements in eyebrow and eyelash density. By suppressing the inflammatory immune signals that attack hair follicles, the drug offers a powerful targeted mechanism, recently earning approval in the European Union for severe alopecia areata while currently undergoing FDA review in the U.S: https://medicalxpress.com/news/2026-08-common-arthritis-pill-repurposed-boost.html 

In Brief

  • Researchers report that the drug upadacitinib, used to treat rheumatoid arthritis, effectively treated the hair loss condition alopecia areata in two clinical trials.
  • The medication, sold under the brand name Rinvoq, is a JAK inhibitor that can help block the immune system response responsible for alopecia areata.
  • There are other JAK inhibitor medications currently available for hair loss, but experts say that upadacitinib could provide those with alopecia with another treatment option.

A commonly used medication to treat rheumatoid arthritis may help people with a serious hair loss condition, according to a new study: https://www.healthline.com/health-news/arthritis-drug-may-support-hair-regrowth-alopecia 

Study findings: https://jamanetwork.com/journals/jamadermatology/fullarticle/2852906


r/STEW_ScTecEngWorld 1d ago

How an MIT research project became a global programming language

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20 Upvotes

The MIT News article highlights the evolution of the Julia programming language, which began in 2009 as an MIT research project created to solve the trade-off between user-friendliness and execution speed in scientific computing. Designed to combine the ease of Python with the speed of C, Julia grew into an open-source language with over one million users across academia and industry for applications ranging from pharmaceutical design to climate modeling. Its commercial spinoff, JuliaHub, has expanded the language's reach by launching AI platforms like Dyad 3.0, which enables engineers to direct autonomous agents in designing complex physical systems while enforcing physical laws

AI-powered engineering platform built for the age of Software-Defined Machines: https://juliahub.com/


r/STEW_ScTecEngWorld 2d ago

Aircraft-design Company Unveils Electric “Air Skateboard” Using AI-Assisted Flight Control

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149 Upvotes

Aircraft-design company CoolFly has launched its Urban on August 13, 2026, a compact, standing electric VTOL (eVTOL) platform that is controlled primarily by shifting the pilot’s body weight rather than using a conventional control stick. The eight-rotor platform incorporates computerized flight stabilization to adjust thrust and maintain balance during flight. CoolFly quotes approximately 15–20 minutes of flight time, a range of about 23 km, and a top speed limited to 70 km/h.

Although marketed as a new generation of personal eVTOL, the concept has an important historical precedent. In 1955, the U.S. Navy funded development of the Hiller VZ-1 Pawnee, a pilotable flying platform that also used a standing operator and rotor-based vertical flight. The key difference is technological: the Hiller platform relied on gasoline-powered ducted rotors and mechanical control, whereas CoolFly's Urban uses battery-electric distributed propulsion and computerized flight control. In that sense, Urban can be viewed as a modern electric reinterpretation of a concept demonstrated more than 70 years ago: https://www.aol.ca/articles/china-unveils-worlds-first-pilotable-184700000.html

Read more here: https://www.bgr.com/2241802/china-unveils-world-first-hovercraft-us-1950s/


r/STEW_ScTecEngWorld 1d ago

Brain-reading wearables will soon be ordinary. What will this mean for the new generation of ‘neurotechnological natives’?

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14 Upvotes

The research explores how consumer wearables like EEG-equipped earbuds are quietly ushering in a "brain-as-interface" era where neural monitoring becomes routine in daily life. Author José M. Muñoz introduces the concept of "neurotechnological natives"—the upcoming generation growing up with tech that directly decodes and interacts with inner mental states rather than just external behavior. To address this shift, the author proposes an urgent research and regulatory agenda focusing on three key dimensions: technoscientific integration, cognitive development (such as impacts on identity, self-regulation, and inner speech), and sociocultural equity.

study: https://nyaspubs.onlinelibrary.wiley.com/doi/10.1111/nyas.70381


r/STEW_ScTecEngWorld 1d ago

Forbidden planet: was Pluto’s 2006 demotion a big mistake?

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10 Upvotes

The debate over Pluto’s status remains fiercely polarized two decades after the International Astronomical Union (IAU) reclassified it as a dwarf planet in 2006. Many planetary scientists and advocates argue that the IAU’s requirement for a planet to "clear its neighbourhood" is scientifically flawed and arbitrary, preferring instead a geophysical definition based on an object's physical characteristics, such as geological activity and atmosphere. Conversely, astronomers maintain that dynamic criteria are essential to separate major solar system bodies from the hundreds of small, similar objects in the Kuiper Belt, emphasizing that dropping the orbital requirement would logically classify Earth's moon and other natural satellites as planets too.


r/STEW_ScTecEngWorld 1d ago

MIT Develops Wireless Ultrasound Wristband for Real-Time Finger Tracking

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44 Upvotes

MIT engineers have developed a wireless ultrasound wristband that can image muscles and tendons beneath the wrist and, using AI, reconstruct the position of individual fingers in real time. The system tracks 22 degrees of freedom with a latency of less than 120 milliseconds, providing detailed information about hand and finger movements without requiring cameras or wired sensors.

In demonstrations, the wearable successfully controlled a robotic hand, enabling it to play piano and manipulate objects including scissors, a pencil, and a tennis ball. It also correctly recognized all 26 letters of American Sign Language (ASL). Led by MIT engineer Xuanhe Zhao, with collaborators at the University of Southern California, the research was published in Nature Electronics. The technology could potentially advance prosthetic control, human–machine interfaces, robotics, and wearable gesture recognition.

Press Release: https://news.mit.edu/2026/wristband-enables-wearers-control-robotic-hand-with-own-movements-0325

Research findings: https://www.nature.com/articles/s41928-026-01594-4

Open Access Research: https://libraries.mit.edu/scholarly/publishing/find-oa-articles/


r/STEW_ScTecEngWorld 2d ago

Kongō Gumi: The 1,400-Year-Old Company That Survived Empires, Wars and Economic Crises

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3.3k Upvotes

Did you know that one of the world’s oldest continuously operating businesses traces its origins back nearly 1,450 years?

Kongō Gumi, a Japanese temple and shrine construction company, traces its beginnings to 578 AD, when master carpenter Kongō Shigemitsu, one of three craftsmen traditionally said to have been brought from the Korean kingdom of Baekje, came to Japan to help construct Shitennō-ji Temple in Osaka. The Kongō family and its craftsmen subsequently became renowned for building, maintaining and restoring Buddhist temples and Shinto shrines, passing their specialized knowledge through generations.

For centuries, the company remained remarkably focused on its core craft. Its lineage is traditionally traced through more than 40 generations, preserving specialized woodworking and temple-building techniques while adapting to wars, fires, natural disasters, changing technologies and economic upheavals.

Its remarkable run as an independent family business eventually ended in 2006, when financial difficulties and debt led to its acquisition by Takamatsu Construction Group. Kongō Gumi, however, survived as a company and continues its traditional temple and shrine construction work today.

What strikes me most isn't simply the longevity. It is the singular focus: one specialized craft, refined and transmitted across roughly 1,450 years. A powerful reminder that sometimes, enduring success comes not from constantly reinventing what you do, but from continually perfecting what you do best.

Good Sources:

  1. Kongō Gumi's official history — its founding tradition, Shitennō-ji connection and historical development: https://www.kongogumi.co.jp/about_history.html

  2. INSEAD case study — particularly useful for the 40-generation family-business history and the 2006 financial collapse: https://publishing.insead.edu/case/kongo-gumi-oldest-continuously-operating-business

  3. Takamatsu Construction Group — current corporate history and Kongō Gumi's continuing role in traditional architecture: https://www.takamatsu-cg.co.jp/eng/about/esg/social/culture/post-3.html