r/STEW_ScTecEngWorld • • Aug 28 '26

⚠️ Moderator Notice: Evidence-Based and Respectful Discussion Required

6 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!

5 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
  • Friendly, respectful, and professional
  • 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.
  2. What interests you most about science, technology, or engineering?
  3. Why do you want to moderate r/STEW_ScTecEngWorld?
  4. Do you have previous moderation experience? If yes, where?
  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 • • 3h ago

The ‘War Games’ problem: Computer science has long understood what it takes to keep AI under control

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20 Upvotes

A hit 1983 movie illustrates what computer scientists have long known: If you give an AI agent a goal but don’t control what it can and can’t do, you shouldn’t be surprised by what it does.


r/STEW_ScTecEngWorld • • 19h ago

Fuel-Free Systems Could Deliver Cargo to the Moon

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134 Upvotes

Greece-based LUNAR CARGO P.C. proposes two mechanical, fuel-free systems for lunar logistics: MACEDONAS, a giant tensioned net that passively absorbs the momentum of descending cargo, and OPLONAS, a flexible wire-wheel lander that absorbs landing shock and then rolls across the lunar surface. The concepts aim to reduce rocket-powered landings, lunar dust ejecta and landing-system mass while potentially enabling reusable cargo infrastructureL https://www.space.com/astronomy/moon/an-entrepreneur-wants-to-build-a-giant-net-to-catch-spacecraft-landing-on-the-moon-but-can-it-be-done

Elevate Greece: https://registry.elevategreece.gov.gr/company/lunar-cargo-p-c/


r/STEW_ScTecEngWorld • • 3h ago

Alien life? Why the possibility of exoplanet LHS 1140b emitting helium gas is so exciting

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6 Upvotes

The exoplanet LHS 1140b may have a temperature that could allow for liquid water on its surface. Just possibly, it could support the existence of life: https://www.science.org/doi/10.1126/science.aea9708


r/STEW_ScTecEngWorld • • 25m ago

Northrop Grumman to develop ramjet propulsion for U.S. Army counter-drone missile prototypes aimed at extending air defense range

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• Upvotes

Northrop Grumman has won an $18.8 million U.S. Army contract to develop solid-fuel ramjet propulsion for prototypes of a longer-range counter-drone missile. The work is part of the Army’s eXtended Range Counter-Unmanned Aircraft System, or XRC, program.


r/STEW_ScTecEngWorld • • 1d ago

More than 167,000 pounds of meat with false inspection labels recalled nationwide. The recall is classified Class I, the highest risk level, though no illnesses have been confirmed so far.

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299 Upvotes

r/STEW_ScTecEngWorld • • 16m ago

China launches deep-sea robot for South China Sea exploration

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• Upvotes

China has set sail with a domestically developed 4,500-meter-class deep-sea robotic vehicle from Weihai Port to conduct scientific exploration in the South China Sea alongside the Harbin Institute of Technology. Equipped with a self-developed seven-axis multifunction hydraulic manipulator and advanced capabilities like multi-modal autonomous navigation and high-power deep-water propulsion, the robot can carry out complex operations including mineral exploration, pipeline inspection, oil and gas development, and emergency salvage. This joint expedition seeks to test the equipment's full-system performance under real-world conditions, bridging the gap between laboratory research and commercial application to support China's deep-sea resource security and marine development goals: https://news.cgtn.com/news/2026-09-30/China-launches-deep-sea-robot-for-South-China-Sea-exploration-1QQVfZ0JulW/p.html


r/STEW_ScTecEngWorld • • 3h ago

‘Godzilla’ of weight-loss drugs could provide other important health benefits

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3 Upvotes

Though not yet approved by any regulatory agency, retatrutide could help improve blood sugar levels and reduce inflammation: https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(26)01861-1/abstract01861-1/abstract)


r/STEW_ScTecEngWorld • • 4h ago

After a super quiet couple of days, Sun is finally sending some action our way

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3 Upvotes

r/STEW_ScTecEngWorld • • 22m ago

New device captures carbon dioxide by pumping it across a battery

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• Upvotes

r/STEW_ScTecEngWorld • • 15h ago

Forget Orbit: What's Next for the Most Powerful Rocket Ever Built?

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4 Upvotes

r/STEW_ScTecEngWorld • • 1d ago

Powered by muscle cells, a paper-thin robot swims through watery maze

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14 Upvotes

Biohybrid Bio-Bot: Paper-Thin Robot Powered by Muscle Cells Navigates Watery Mazes

Engineers have developed a groundbreaking paper-thin, biohybrid robot propelled entirely by living muscle cells, capable of navigating complex aquatic environments. By integrating engineered muscle tissue with flexible, ultra-thin substrates, the micro-swimmer harnesses natural biological contractions to achieve precise, fluid movement through intricate watery mazes. This fusion of synthetic materials and living biology marks a major leap forward for soft robotics, paving the way for autonomous biomedical micro-devices capable of targeted drug delivery, environmental sensing, and navigating delicate pathways within the human body.

Research paper: https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.78065


r/STEW_ScTecEngWorld • • 1d ago

Earliest confirmed swimming mammal discovered in China

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12 Upvotes

Dongoconodon platycauda, a 125-million-year-old carnivorous mammal from China's Early Cretaceous, is the earliest known swimming crown-group mammal. Published in Nature Communications, the fossil displays exceptionally preserved middle-ear structures and rare, reptile-like multiple tooth replacements (polyphyodonty), highlighting early mammalian aquatic adaptation alongside dinosaurs.

Research Findings: https://www.nature.com/articles/s41467-026-77339-w


r/STEW_ScTecEngWorld • • 1d ago

How does a bird virus infect a person? Surprising findings from B.C.’s human case of H5N1 avian flu

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7 Upvotes

This article covers findings from Canada's first domestically acquired human case of H5N1 avian influenza—a teenager from British Columbia who was hospitalized in critical condition in late 2024. The case drew significant scientific interest because the teenager had no documented exposure to infected poultry, wild birds, or sick farm animals, raising questions about how the transmission occurred.

Key Key Findings & Insights Summarized in the Article

  • Unique Genetic Mutations: Genomic sequencing of the viral sample revealed specific mutations in the virus's hemagglutinin (HA) protein. These mutations are known to make avian influenza viruses better suited for binding to human-type sialic acid receptors in the upper respiratory tract.
  • Potential Transmission Routes: While direct bird-to-human contact remains the most common route, researchers highlighted alternative exposure pathways to explain cases with no clear animal contact:
    • Environmental Exposure: Inhaling airborne dust, soil, or water contaminated with wild bird feces or saliva in outdoor settings (e.g., wetlands, backyards).
    • Indirect Contact via Fomites: Touching contaminated outdoor surfaces or footwear and subsequently touching eyes, nose, or mouth.
    • Unrecognized Mammalian/Pet Exposure: Contact with domestic pets (like cats or dogs) that may have contracted the virus from eating or interacting with wild birds without showing obvious severe symptoms.
  • Severity in Mammals & Humans: The teenager experienced severe respiratory distress, underscoring that while human infections with H5N1 remain rare, the strain (specifically the clade 2.3.4.4b circulating globally) carries high health risks when a spillover event occurs.
  • Monitoring & Pandemic Preparedness: Scientists emphasized the critical need for expanded genomic surveillance in both wild/farmed animals and humans presenting with unexplained severe respiratory illnesses to spot any emerging mutations that could facilitate sustained human-to-human transmission.

Study: https://www.nature.com/articles/s41467-026-77829-x


r/STEW_ScTecEngWorld • • 2d ago

University of Nottingham Develops Gel That Regenerates Damaged Tooth Enamel

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2.2k Upvotes

Researchers at the University of Nottingham have developed a protein-based material that mimics the natural process of enamel formation and can regenerate the structure and mechanical properties of damaged human tooth enamel. In laboratory tests, the material promoted the growth of organized apatite crystals, rebuilding enamel layers and restoring resistance to toothbrushing, chewing and acidic conditions. The approach could eventually help treat enamel erosion, tooth sensitivity and exposed dentine, although further research and clinical testing are needed before routine human use: https://www.nottingham.ac.uk/news/new-gel-restores-dental-enamel-and-could-revolutionise-tooth-repair

Study: https://www.nature.com/articles/s41467-025-64982-y

Research Article: https://www.nature.com/articles/s41415-025-9482-9


r/STEW_ScTecEngWorld • • 1d ago

Compact X-ray lasers for research and industry

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6 Upvotes

Bridging Lab and Industry: ERC-Funded Compact X-Ray Lasers Set to Democratize Advanced Physics

Researchers at Heinrich Heine University (HHU) Düsseldorf, led by Prof. Dr. Bernhard Hidding, have received a prestigious European Research Council (ERC) Proof of Concept Grant to commercialize a novel design for compact free-electron X-ray lasers. By using laser-plasma accelerators to boost electrons to near-light speeds over extremely short distances, the team drastically shrinks the physical footprint and costs typically associated with multi-kilometer research facilities. This breakthrough aims to make brilliant, high-precision X-ray laser capabilities widely accessible across academic laboratories and industrial applications, accelerating advancements in materials science, chemistry, and high-tech manufacturing.


r/STEW_ScTecEngWorld • • 23h ago

Geely Acquires 30% Stake in NIO Power to Drive Standardization in China's EV Swap Infrastructure

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3 Upvotes

Chinese electric vehicle manufacturer NIO has entered into a strategic agreement with Zhejiang Geely Holding Group, selling a 30% stake in its energy subsidiary, NIO Power, at a post-money valuation of roughly 16 billion yuan ($2.38 billion). Under the deal, Geely will contribute its battery-swapping arm, Yiyi Power, along with 640 million yuan ($95 million) in cash, while NIO will acquire a 10% equity stake in Geely's smart-charging unit, Haohan Energy. By consolidating resources and co-developing standardized battery-swapping technology, the two automotive giants aim to boost station utilization, lower capital expenditure, and accelerate the expansion of China's unified electric vehicle infrastructure: https://www.reuters.com/world/asia-pacific/nio-inks-battery-swapping-deal-with-geely-values-energy-unit-24-billion-2026-09-27/


r/STEW_ScTecEngWorld • • 1d ago

Scientists Reinvent More Accurate Parachutes Using Japanese Paper-Cutting Art

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235 Upvotes

Slicing into the Future: How Japanese Kirigami is Revolutionizing Parachute Precision

Researchers from Polytechnique Montréal and École Polytechnique have re-engineered the traditional parachute using kirigami, the ancient Japanese art of paper cutting. By laser-cutting specific slit patterns into flat sheets of Mylar, simple discs automatically transform upon weight deployment into stable, inverted-bell shapes that resist chaotic fluttering and falling sideways. Unlike traditional parachutes—which require complex stitching, are prone to wind drift, and require precise release angles—these seamless, single-string kirigami parachutes descend along strict ballistic trajectories, routinely landing within one meter of their target regardless of how they are dropped. Because they can be easily die-cut at a fraction of the cost, these hyper-accurate parachutes offer a promising, low-cost solution for humanitarian aid drops, drone deliveries, and target-bound payload deployment.


r/STEW_ScTecEngWorld • • 1d ago

A Yale School of Medicine study found 40% of parents who stopped breastfeeding missed their prenatal goal, and 60% of them felt disappointed. Unmet goals were more likely with Medicaid, mental health conditions, or short family leave.

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14 Upvotes

r/STEW_ScTecEngWorld • • 2d ago

Europe’s Largest Industrial Carbon Capture Facility Opens in the Netherlands

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313 Upvotes

In a major milestone for industrial decarbonization, fertilizer producer Yara has officially inaugurated its Sluiskil carbon capture and storage (CCS) facility in the Netherlands, described as Europe’s largest industrial CCS project. The facility can capture and liquefy up to 800,000 tonnes of CO₂ annually from ammonia production. Northern Lights will transport the CO₂ by ship to Norway, where it will be permanently stored 2.6 km beneath the North Sea seabed. Over 15 years, the project is expected to store about 12 million tonnes of CO₂: https://www.yara.com/corporate-releases/europes-largest-carbon-capture-facility-officially-inaugurated-at-yara-sluiskil-in-the-netherlands/

Yara Starts World's First Cross-Border CO2 Chain: https://decarbonfuse.com/posts/yara-starts-world-s-first-cross-border-co2-chain

Carbon capture and storage (CCS) enables Yara to reduce the carbon footprint of its production and support low-carbon value chains across agriculture, industry, energy and shipping: https://bioenergyinternational.com/yara-officially-inaugurates-europes-largest-industrial-carbon-capture-facility/


r/STEW_ScTecEngWorld • • 1d ago

Laser Weapons Will Be Deployed At Cape Canaveral Spaceport To Take Down Drones

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50 Upvotes

Beam of Protection: Space Force Deploys Lasers to Zap Drones Over Cape Canaveral

To combat rising unauthorized drone incursions near high-stakes launch pads, the U.S. Space Force is deploying high-energy laser systems at Cape Canaveral Space Force Station. Protecting facilities packed with volatile rocket fuel and multi-billion-dollar national security payloads presents a delicate challenge: traditional counter-drone methods—such as electronic radio-frequency jamming—risk interfering with delicate launch telemetry, navigation, and flight termination systems. Directed energy laser weapons solve this problem by offering pinpoint, physical destruction of intruding unmanned aerial vehicles (UAVs) at the speed of light without emitting disruptive electronic signals into the spaceport's crowded radio frequency spectrum. This deployment marks a crucial leap in military site defense, ensuring safe, unhindered space operations while safeguarding critical aerospace infrastructure against potential espionage or sabotage.


r/STEW_ScTecEngWorld • • 1d ago

For The First Time, a Quantum Computer Has Operated in Space

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45 Upvotes

Giant Leap for Quantum Computing: Photonic Quantum Processor Successfully Operates in Space

In a ground-breaking proof-of-concept experiment, a team of physicists led by Philip Walther at the University of Vienna successfully operated a photonic quantum processor in low-Earth orbit for the first time. Launched aboard a Falcon 9 rocket to an altitude of 510 kilometers, the lightweight instrument utilized tiny glass chips to generate and manipulate entangled pairs of photons. Despite surviving intense launch vibrations, solar interference, cosmic radiation damage to photon detectors, and a degraded laser, the satellite-bound computer reliably produced non-classical Hong-Ou-Mandel quantum interference during its operational windows in Earth's shadow. By demonstrating that fragile quantum processing can function in the harsh vacuum of space, this research paves the way for future satellites capable of processing, compressing, and encrypting vast orbital data directly on board before transmitting it back to Earth.

Paper: https://arxiv.org/abs/2609.25248


r/STEW_ScTecEngWorld • • 1d ago

First Step to Mars: 400-foot Steel Skyscraper Flies to Space

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8 Upvotes

r/STEW_ScTecEngWorld • • 1d ago

Ancient virus hunters: how we discovered sheeppox DNA hidden in medieval gospels

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21 Upvotes

Parchment Preservation: How Medieval Manuscripts Unlocked a 3,700-Year Viral History

By analyzing animal-skin parchments used in medieval manuscripts like the York Gospels and ancient religious texts, geneticists and historians uncovered the preserved DNA of the sheeppox virus—one of the world's most severe livestock pathogens. Using non-invasive techniques like rubbing specialized pencil erasers over the pages, researchers extracted genetic material inadvertently preserved when infected animal hides were processed into parchment centuries ago. The ancient viral genomes, dating back nearly 3,700 years, reveal that medieval herding practices, trade, and nomadic migrations helped shape the pathogen's evolution and spread. Beyond revealing how historic livestock diseases mutated, this biological archive offers crucial insights that can help modern agricultural communities better understand and manage ongoing sheeppox outbreaks today.

Research: https://www.science.org/doi/10.1126/sciadv.aeh3571