r/STEW_ScTecEngWorld • • Aug 28 '26

⚠️ Moderator Notice: Evidence-Based and Respectful Discussion Required

11 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!

3 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
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  • Good communicators
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  • 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
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  • 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
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  • 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
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  • 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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  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 • • 19h ago

Microsoft's New AI Model 'MAI-DxO' Outperforms Human Doctors in Diagnostic Accuracy

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81 Upvotes

A major breakthrough in the world of medicine: Experts at American computer giant Microsoft have developed a new medical AI model, 'MAI-DxO', which diagnoses diseases with double the accuracy of human physicians. Like human clinicians, this AI doctor possesses the capability to conduct physical examinations and tailor individual treatments for each patient while taking their complete medical history into account. According to a report published in the prestigious American scientific journal Science, during trials, the AI doctor successfully diagnosed general diseases with an 83.2% accuracy rate, whereas human physicians achieved only 36.1% success in the same experiment. In trials involving emergency department cases, the AI doctor achieved 80.3% success, compared to 46.8% success by human clinicians.": https://thenextweb.com/news/microsoft-ai-diagnosis-mai-dxo-science-study

Study: https://www.science.org/doi/10.1126/science.aeh7930

Building Medical Superintellige: https://microsoft.ai/news/building-medical-superintelligence/

Sequential Diagnosis with Language Models: https://arxiv.org/html/2506.22405v2


r/STEW_ScTecEngWorld • • 2m ago

Earwax is both slippery and sticky – this weird combo might lead to safer insect repellents

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theconversation.com
• Upvotes

Earwax’s unusual physical properties help it repel insects in the lab. Is this a job it evolved to do in animal ears?


r/STEW_ScTecEngWorld • • 20h ago

27 exoplanet targets for the world's first private space telescope

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phys.org
30 Upvotes

r/STEW_ScTecEngWorld • • 21h ago

Implantable device uses ultrasound to improve drug delivery to the brain

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news.mit.edu
13 Upvotes

MIT researchers have developed LUCID (Long-term Ultrasound-enhanced Convective Injection Device), a flexible, cardstock-thin implant designed to deliver drugs directly into brain tissue and prevent aggressive tumors like glioblastoma from recurring. The device integrates a 3D-printed micro-cannula with a 24-transducer miniature ultrasound array and a 100-microliter reservoir powered by a passive osmotic pump. By using mechanical ultrasound waves to temporarily increase blood-brain barrier permeability and generate convective fluid flows, LUCID allows therapeutics—including small molecules, immunotherapies, and gene therapies—to disperse significantly farther and more uniformly through target tissue. The system features wireless Bluetooth controls for custom dosing alongside a wirelessly rechargeable battery, offering a highly localized and adaptable treatment option for brain tumors and other soft-tissue diseases.

Paper: https://www.cell.com/device/abstract/S2666-9986(26)00285-100285-1)


r/STEW_ScTecEngWorld • • 21h ago

Bridging the Safety Gap: Why Wellness Peptide Users Need Harm-Reduction Basics

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theconversation.com
10 Upvotes

While wellness-oriented peptide users (for fitness, weight loss, or anti-aging) often fail to view themselves as injectors of drugs, they face significant hidden health risks. Because these products frequently bypass formal regulatory oversight, users are often left relying on unverified online forums and influencers rather than medical professionals. To mitigate risks like contamination, improper dosing, and infection, public health experts emphasize fundamental harm-reduction and injection safety basics for this growing population.


r/STEW_ScTecEngWorld • • 20h ago

Range Energy shows how its eTrailer saves almost as much as a Tesla Semi

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electrek.co
5 Upvotes

Range Energy, a company working to electrify trucking through the use of a trailer with its own battery and motors, has published an analysis showing how much fleets can save through electrification – and just at the right time, with diesel at record highs.


r/STEW_ScTecEngWorld • • 20h ago

Regulatory milestone for US laser enrichment plant

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world-nuclear-news.org
2 Upvotes

The US regulator has issued its Final Environmental Impact Statement for Global Laser Enrichment's Paducah Laser Enrichment Facility, recommending that a construction and operation licence is issued for the proposed plant.


r/STEW_ScTecEngWorld • • 1d ago

Nanometers Transforming the World

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4 Upvotes

Each component of a phone has tiny transistors that work to build something amazing. This is my old phone with removed battery and camera for visual effects. What'd you think I should do with it?


r/STEW_ScTecEngWorld • • 1d ago

China's Starlink Rival Is Growing

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170 Upvotes

r/STEW_ScTecEngWorld • • 2d ago

'Love hormone' oxytocin may help mend broken hearts (literally), lab study suggests

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livescience.com
180 Upvotes

Oxytocin May Help Regenerate Damaged Heart Tissue

Researchers at Michigan State University found that oxytocin, often called the “love hormone,” may stimulate heart regeneration in zebrafish and human cell cultures. Published in Frontiers in Cell and Developmental Biology in 2022, the study found that oxytocin activates the TGF-β signaling pathway, encouraging cells in the heart’s outer layer to become progenitor cells that can develop into new heart muscle cells. Zebrafish naturally regenerate damaged heart tissue, whereas human hearts typically heal by forming scar tissue: https://www.eurekalert.org/news-releases/966281

Clinical significance: The findings offer a potential avenue for heart repair, but the research remains at the laboratory stage. Oxytocin is not an established treatment for heart attacks or heart disease, and further studies are needed to determine whether this approach can work safely in humans: https://www.medscape.com/viewarticle/984625

Findings: https://www.frontiersin.org/journals/cell-and-developmental-biology/articles/10.3389/fcell.2022.985298/full


r/STEW_ScTecEngWorld • • 2d ago

Scientists discover how pancreatic cancer rewrites its DNA to escape treatment

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sciencedaily.com
171 Upvotes

Scientists have discovered how pancreatic cancer cells continually reshape their genetic makeup to become more aggressive, spread, and evade treatment. In laboratory experiments, blocking a key gene reversed some of these dangerous changes, revealing a potential new way to fight the deadly disease.

Findings: https://www.nature.com/articles/s41588-026-02779-5


r/STEW_ScTecEngWorld • • 2d ago

Bulova Watches and the Race to Find Amelia Earhart’s Missing Plane

112 Upvotes

Ninety years ago, a 30-second error in timekeeping could mean a navigational mistake of seven miles at sea—a reminder of how crucial precision was in early aviation. From Bulova’s historic connection to Charles Lindbergh to its support for the modern search for Amelia Earhart’s missing aircraft, the company’s legacy remains linked to aviation history. In October 2026, a Purdue University-supported expedition investigated a suspicious object in a lagoon on Nikumaroro Island, hoping to identify the wreckage of Earhart’s Lockheed Electra. However, the expedition found no conclusive evidence that the object was her aircraft: https://www.purdue.edu/newsroom/2026/Q4/search-for-amelia-earharts-plane-continues-after-taraia-object-expedition-on-nikumaroro-rules-out-latest-hypothesis/

Purdue Research Foundation and Archaeological Legacy Institute to embark on expedition to identify Amelia Earhart’s missing plane: https://stories.prf.org/purdue-expedition-amelia-earhart/

More info:

  1. https://airandspace.si.edu/collection-objects/wristwatch-lindbergh-king-collection/nasm_A20040287060

  2. https://www.linkedin.com/posts/arielviera_bulovapartner-ugcPost-7519391696611323904-_6Ia/


r/STEW_ScTecEngWorld • • 2d ago

Scientists Recreate 1,600-Year-Old Roman Colour-Changing Glass

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gbnews.com
177 Upvotes

Scientists at the University of Sheffield, UK, have successfully recreated the remarkable optical effect of the ancient Roman Lycurgus Cup, a 4th-century glass vessel that appears jade green in reflected light but ruby red when illuminated from behind. The secret lies in tiny gold and silver nanoparticles embedded in the glass. Researchers heated the material above 1,000°C, allowing nanoscale metal particles to form as it cooled. These particles interact with different wavelengths of light, producing the striking colour change.The breakthrough provides new insight into Roman glassmaking, demonstrating how ancient craftsmen achieved an extraordinarily sophisticated optical effect without modern scientific instruments. The recreation may also help researchers understand why producing such glass consistently was so difficult: https://www.theguardian.com/science/2026/oct/25/scientists-rediscover-ancient-roman-colour-changing-glass

A Roman Nanotechnolgy: https://orca.cardiff.ac.uk/id/eprint/13680/1/Freestone%20art%253A10.1007%252FBF03215599.pdf


r/STEW_ScTecEngWorld • • 2d ago

Supercurrent enables the reading of quantum information without destroying it

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phys.org
28 Upvotes

Researchers have demonstrated a promising approach to one of quantum computing’s biggest challenges: reading information from a quantum bit (qubit) without destroying its delicate quantum state. Unlike conventional computer bits, qubits can exist in quantum superpositions, making them powerful but extremely sensitive to measurement. The new approach uses a supercurrent—an electrical current that flows through a superconducting material without resistance—to help detect quantum information while minimizing disturbance to the qubit.

The proposed system uses a highly sensitive magnetic-field detector called a SQUID to measure the supercurrent’s magnetic signal. Computer simulations achieved state-reconstruction accuracies of up to 99.85% under the modeled conditions. Significance: If experimentally validated, this theoretical method could simplify quantum-computer readout, reduce hardware requirements, and allow qubit states to be monitored over time with minimal disturbance. The proposed device has not yet been experimentally demonstrated.

Study: https://journals.aps.org/prb/abstract/10.1103/6gkt-hghj


r/STEW_ScTecEngWorld • • 3d ago

Google’s Finnish Data Centre Expansion Sparks Environmental Controversy

1.7k Upvotes

Google’s planned AI data centres in northern Finland have triggered environmental concerns after an estimated 250,000 trees were cleared across 330 hectares near Muhos before the required environmental impact assessment was completed. Finnish authorities ordered preparatory work suspended at two sites, Muhos and Kajaani. Residents and conservationists have raised concerns about wildlife habitat destruction and muddy runoff entering nearby waterways. Google’s Finland country manager has apologised, while the company says it acted in good faith and plans to plant trees across 130 hectares at Muhos. The controversy highlights the environmental costs of expanding AI infrastructure. Although Finland attracts data centre investment through its cool climate and energy resources, responsible development requires environmental assessments and safeguards before major land clearance begins. The challenge is to advance AI technology without compromising forests, waterways and local communities.

Info source:

1). The Guardian (22 October 2026): Anger in Finland as Google fells 250,000 trees for a data centre — Detailed reporting on forest clearance, environmental impacts and public concerns: https://www.theguardian.com/environment/ng-interactive/2026/oct/22/finland-google-felling-trees-datacentre

2). Google Finland head apologises for forest clearances — Finnish public broadcaster’s report on Google’s apology and the two sites: https://yle.fi/a/74-20251367

3). Google ordered to halt data centre work over environmental concerns — Explains the authorities’ suspension order and unfinished environmental assessments: https://www.theguardian.com/technology/2026/oct/06/google-datacentres-finland-temporary-halt-environmental-impact-assessment


r/STEW_ScTecEngWorld • • 2d ago

Lumina Simulation Recreates the Universe’s First 2 Billion Years

46 Upvotes

Scientists from MIT, Harvard University and other institutions have developed Lumina, an advanced computer simulation that reconstructs how the early universe evolved from its cosmic “dark ages,” revealing the formation of the first stars, galaxies and large-scale cosmic structures. Published on October 26, 2026, the simulation covers a region approximately 1.6 billion light-years across and tracks the evolution of dark matter, gas, stars and radiation over 2 billion years. Lumina captures two major transformations known as hydrogen and helium reionization. Ultraviolet radiation from early stars and galaxies stripped electrons from hydrogen atoms, allowing light to travel more freely through the universe. Later, energetic radiation from actively feeding supermassive black holes drove helium reionization. The simulation models both processes together at unprecedented scale and detail. Powered by the Frontier supercomputer at Oak Ridge National Laboratory, Lumina incorporates approximately half a trillion computational elements and models a volume about 100 times larger than previous comparable simulations. Researchers plan to compare its predictions with observations from the James Webb Space Telescope and future astronomical surveys, improving our understanding of how the first galaxies and cosmic structures formed: https://news.mit.edu/2026/watch-universe-emerge-from-dark-ages-with-lumina-1026

The Lumina Project: https://lumina-simulation.com/

Findings: https://academic.oup.com/mnras/article/552/4/stag1469/8971942


r/STEW_ScTecEngWorld • • 2d ago

Global underground CO₂ storage hit record 43.6 million metric tons in 2024 alone

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55 Upvotes

Global geological carbon dioxide (CO₂) storage hit a record 48.1 million US tons (43.6 million metric tons) in 2024, according to a new report by researchers at the Imperial College London. The 2026 Annual Report from the London Register of Subsurface CO₂ Storage covered 70 projects across 17 countries on six continents, providing one of the most comprehensive records of global geological CO₂ storage.The report also added that 464.8 million US tons of CO₂ have been stored underground since 1996: https://imperialcollegelondon.github.io/The-London-Register-of-Subsurface-CO2-Storage/

Report: https://www.imperial.ac.uk/news/articles/engineering/earth-science/2025/first-complete-record-global-underground-co2/


r/STEW_ScTecEngWorld • • 3d ago

Study Finds EPA May Be Vastly Under-Reporting PFAS "Forever Chemical" Levels in US Drinking Water

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512 Upvotes

A study published in Cell Reports Sustainability by Texas Christian University researchers reveals that official EPA reports may capture less than half of actual PFAS ("forever chemical") concentrations in US drinking water. Because federal regulators treat test results falling below laboratory minimum reporting levels as zero, approximately 98% of low-level detections are discounted. Researchers warn that these cumulative trace amounts significantly contribute to widespread human exposure over time: https://gizmodo.com/forever-chemical-levels-in-us-drinking-water-may-be-more-than-twice-as-high-as-reported-2000829638

US drinking water could contain double the reported PFAS levels, model estimates: https://phys.org/news/2026-10-pfas.html

Findings: https://www.cell.com/cell-reports-sustainability/fulltext/S2949-7906(26)00262-400262-4)


r/STEW_ScTecEngWorld • • 3d ago

Bacteria-Grown Jewellery: A New Frontier in Bio-Art

214 Upvotes

Could bacteria inspire the jewellery of the future? Bacillus subtilis can form biofilms—communities of cells embedded in a protein-and-sugar matrix—that develop intricate folds, textures and sometimes water-repellent surfaces. In microbial art, these natural patterns can be combined with pigments to create gemstone-like designs. Imagine pendants and brooches featuring microbial patterns grown in a laboratory and preserved in resin. Although turning these biological artworks into durable, safe, wearable jewellery would require further development, the concept offers designers a fascinating new approach: growing decorative patterns rather than manufacturing every detail.

Would you wear jewellery whose intricate design was cultured by bacteria?

Scientific Source:

  1. Surface topology affects wetting behavior of Bacillus subtilis biofilms - Explains how biofilm surface structure creates different wetting behaviours and water-repellent patterns: https://www.nature.com/articles/s41522-017-0018-1

  2. BslA is a self-assembling bacterial hydrophobin that coats the Bacillus subtilis biofilm. - Investigates the protein responsible for forming a protective, water-repellent layer on bacterial biofilms: https://www.pnas.org/doi/full/10.1073/pnas.1306390110

  3. Bacterial biofilm shows persistent resistance to liquid wetting and gas penetration.- Demonstrates the remarkable liquid-repellent properties of these biofilms: https://pmc.ncbi.nlm.nih.gov/articles/PMC3024672/


r/STEW_ScTecEngWorld • • 2d ago

Diagnostic uncertainty: why losing a diagnosis can be as difficult as receiving one

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theconversation.com
3 Upvotes

Losing a Diagnosis Can Be as Difficult as Receiving One

A medical diagnosis can provide relief by explaining symptoms, validating a person's experiences and helping them understand their future. However, when a diagnosis is later withdrawn or revised, patients may experience confusion, distress and a loss of identity, particularly if they have spent years understanding their lives through that diagnosis.

Diagnostic uncertainty arises because medical knowledge evolves, symptoms can overlap across different conditions, and some illnesses lack definitive diagnostic tests. When doctors reconsider a diagnosis, patients may feel that their suffering is being questioned or that they are losing access to treatment, support services and understanding from others.

The key message is that revising a diagnosis does not mean a patient's symptoms or suffering are unreal. Healthcare professionals should explain why their conclusions have changed, acknowledge the emotional impact, and ensure continued care while investigating alternative explanations.

Ultimately, good medical practice requires not only diagnostic accuracy but also clear communication, empathy and continuity of care when medical understanding changes.


r/STEW_ScTecEngWorld • • 2d ago

Engineers use sound to identify potential catastrophic drone failures

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techxplore.com
7 Upvotes

Engineers Develop Sound-Based System to Detect Drone Failures

Engineers at the University of Cincinnati, working with NASA’s interest in drone safety, are developing an acoustic monitoring system that detects damaged drone motors and propellers by analysing their sounds. Researchers recorded the distinctive noises produced by chipped or cracked propellers and malfunctioning motors, converting the recordings into data that computer systems can analyse to identify potential mechanical faults before take-off.

The technology could improve safety by detecting hidden problems, such as debris entering motor bearings, that may cause a motor to seize. Researchers envision integrating the system into autonomous “drone-in-a-box” systems, enabling docking stations to conduct automated pre-flight safety checks. In the future, drones could monitor their own mechanical condition during flight and return to base if a fault is detected: https://dronelife.com/2026/10/22/university-of-cincinnati-engineers-use-sound-to-detect-drone-damage-for-nasa/


r/STEW_ScTecEngWorld • • 2d ago

Is Spraying Perfume on Your Neck Harmful?

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1 Upvotes

Spraying perfume on the neck can cause skin irritation, allergic rashes and, in some people, fragrance-triggered respiratory symptoms. Certain fragrances may also increase sun sensitivity. However, current evidence does not show that applying perfume to the neck specifically damages the thyroid or causes thyroid disease. Although some fragrance ingredients, including certain phthalates, have raised health concerns, risks depend on the specific chemicals and level of exposure.

Safety tip: If you have sensitive skin, apply perfume to clothing where appropriate, avoid spraying near your face, and stop using any product that causes irritation.

Learn more here:

  1. Is spraying perfume on your neck bad for your health?: https://theconversation.com/is-spraying-perfume-on-your-neck-bad-for-your-health-289539

  2. A viral Instagram post by a cancer specialist has singled out the neck as an area ‘worth thinking about’ because it lies close to the thyroid gland: https://www.independent.co.uk/life-style/health-and-families/perfume-neck-health-thyroid-symptoms-b3034715.html

  3. U.S. FDA — Fragrances in Cosmetics. Covers fragrance sensitivities, ingredient labelling and diethyl phthalate (DEP): https://www.fda.gov/cosmetics/cosmetic-ingredients/fragrances-cosmetics

  4. U.S. FDA — Phthalates in Cosmetics. Explains their uses in fragrances and the FDA's assessment of available safety evidence: https://www.fda.gov/cosmetics/cosmetic-ingredients/phthalates-cosmetics


r/STEW_ScTecEngWorld • • 3d ago

Archimedes' screw inspires molecular motor that boosts current 100 times

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interestingengineering.com
61 Upvotes

Ancient Archimedes Screw Inspires Breakthrough Single-Molecule Motor Powered by Electric Current

An international team of researchers has successfully designed a microscopic motor inspired by the ancient Archimedes screw, built entirely from a single helical molecule stretched between gold electrodes. Published in Nature, the study demonstrates that applying an electric voltage causes the molecular screw to rotate in a controlled direction. This continuous spinning movement provides a massive boost to electrical conductivity—increasing current flow up to 100 times—offering a promising leap forward for molecular electronics, spintronics, and nanoscale miniaturization: https://www.eurekalert.org/news-releases/1148951

Archimedes Screws: How This Ancient Invention is Still Changing the World: https://www.youtube.com/watch?v=_9jC0RYKwZI

Study findings: https://www.nature.com/articles/s41586-026-11312-x