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arXivLabs: Experimental Projects with Community Collaboration

2025-09-22

arXivLabs is a framework enabling collaborators to develop and share new arXiv features directly on the website. Individuals and organizations involved share arXiv's values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners who adhere to them. Got an idea for a project that will benefit the arXiv community? Learn more about arXivLabs.

(arxiv.org)

Development

Glowing Caterpillar Circuit with Conductive Dough

2025-09-22

Glowing Caterpillar Circuit with Conductive Dough

This project teaches kids about circuits using conductive playdough, LEDs, and a 9-volt battery. By rolling dough balls of different colors and connecting them to form a caterpillar body, then inserting LEDs into the gaps and connecting to the battery, the caterpillar lights up! This simple, engaging project introduces basic circuitry and conductivity, perfect for a fun STEM activity.

(newsletter.infiniteretry.com)

Development kids STEM project circuit

arXivLabs: Experimenting with Community Collaboration

2025-09-22

arXivLabs is a framework for collaborators to build and share new arXiv features directly on the website. Individuals and organizations involved share arXiv's commitment to openness, community, excellence, and user data privacy. arXiv only works with partners who adhere to these values. Got an idea for a valuable community project? Learn more about arXivLabs!

(arxiv.org)

Tech

Taming Chaotic Git Commits: A New Utility for Cleaning Up Your Code

2025-09-22

Taming Chaotic Git Commits: A New Utility for Cleaning Up Your Code

The author developed a Git utility called `what-changed-twice` to address the challenge of managing files modified across multiple commits. This tool analyzes `git log` output, identifying files changed more than once and listing the associated commit IDs. This allows developers to easily pinpoint commits needing merging or reorganization, simplifying commit history, preventing conflicts, and boosting efficiency. The author provides usage examples and Perl code in the article.

(blog.plover.com)

Development

OpenStreetMap Download Server Upgrade and Plea for Responsible Downloads

2025-09-22

The OpenStreetMap download server infrastructure has been upgraded, resulting in faster downloads and improved availability. To prevent abuse slowing down the service for everyone, users are urged to download responsibly. Specific recommendations include: downloading the full planet file from planet.openstreetmap.org for global data; using the pyosmium-up-to-date tool for large regions to only download updates; and monitoring automated scripts and implementing error handling to prevent repeated downloads.

(blog.geofabrik.de)

Tech download server

The AI Hype in CS Education: A Cautious Approach Needed

2025-09-22

A computer science professor with 30 years of experience cautions against the uncritical adoption of AI in CS education. She argues that the current AI craze, particularly generative AI, overlooks significant downsides such as environmental impact, data theft, and exploitation of data workers. Blindly incorporating AI tools risks stifling critical thinking and creativity, hindering well-rounded student development. The professor calls for a cautious and balanced approach, prioritizing the cultivation of comprehensive skills over simply following technological trends.

(cacm.acm.org)

Development

Wildfire Smoke: A Grim Toll of 41,000+ Annual Deaths, Projected to Soar

2025-09-22

Wildfire Smoke: A Grim Toll of 41,000+ Annual Deaths, Projected to Soar

New research reveals a staggering toll: wildfire smoke caused over 41,000 excess deaths annually from 2011 to 2020. By 2050, this number could reach 68,000-71,000 due to climate change-induced hotter, drier conditions in North America, unless stronger preventative measures are implemented. The study highlights the urgent need for carbon emission reduction and adaptation strategies, while acknowledging the potential benefits of air purifiers and controlled burns in mitigating the smoke's impact. California is projected to experience the most significant increase in smoke-related mortality, with over 5,000 excess deaths annually.

(www.yahoo.com)

Tech

World's Second Worst Graphics Card: A TTL Gate Masterpiece?

2025-09-22

World's Second Worst Graphics Card: A TTL Gate Masterpiece?

Inspired by Ben Eater's 'world's worst video card', Leoneq built something even... worse? This text-mode graphics card, boasting a VGA resolution of 800x600@60Hz (accessible 400x300), uses only TTL gates and a surprisingly low 21 IC count. Featuring support for Latin, Polish, and even the Standard Galactic Alphabet, the card leverages EPROMs and SRAM for character storage. While plagued by glitches, noise sensitivity, and a generally unimpressive image, this project is a testament to resourcefulness and a humorous take on hardware limitations. It's a testament to the power of ingenuity even when facing a 'terrible idea'.

(github.com)

Hardware

From Failed VideoDisc to Semiconductors: The Rise of the Scanning Capacitance Microscope

2025-09-22

From Failed VideoDisc to Semiconductors: The Rise of the Scanning Capacitance Microscope

RCA's VideoDisc, despite its colossal failure, unexpectedly led to the invention of the scanning capacitance microscope (SCM). This technology, born from the highly sensitive capacitance sensors in the VideoDisc player, initially served as a quality control tool. While VHS conquered the home video market, the SCM found its niche in the semiconductor industry. It became crucial for measuring dopant distribution in integrated circuits, significantly contributing to the development of next-generation semiconductors. This story exemplifies the 'failure is the mother of success' principle in technological innovation, showcasing how even failed projects can give rise to unexpected breakthroughs.

(spectrum.ieee.org)

Tech Scanning Capacitance Microscope RCA VideoDisc

CartoKit: Finalizing Procedural Island Generation

2025-09-22

CartoKit: Finalizing Procedural Island Generation

This final installment details how CartoKit bakes generated island data into a compact mesh, visualizes it with an egui viewer, and exports assets for other tools. It features three key components: a baked terrain mesh containing elevation, moisture, biome, and river metadata; a CPU debug renderer and viewer for visualizing the data; and export helpers for GLB, PNG, and GIF output. The entire process is efficient and modular, laying a solid foundation for future extensions.

(brashandplucky.com)

Development

NPM Security Best Practices: Shielding Against Supply Chain Attacks

2025-09-22

NPM Security Best Practices: Shielding Against Supply Chain Attacks

This article summarizes the security risks present in the NPM ecosystem, such as malware, supply chain attacks, and phishing. It provides various security best practices, including pinning dependency versions, overriding transitive dependencies, disabling lifecycle scripts, setting a minimum release age, utilizing the permission model, reducing external dependencies, enabling two-factor authentication, creating limited-access tokens, and generating provenance statements. The importance of auditing, monitoring, and security tools is stressed, along with recommendations to use private package registries and address maintainer burnout.

(github.com)

Development

The Five Doors of Influence: A New Approach to Persuasion

2025-09-22

The Five Doors of Influence: A New Approach to Persuasion

This article explores five distinct approaches to influencing others: Rationalizing, Asserting, Negotiating, Inspiring, and Bridging. Each represents a 'door' leading to different levels of relationship and commitment. The author emphasizes recognizing our own default persuasion style (our 'blind spot') as crucial, as it shapes our perception and interactions. The key is adapting our approach to the individual, rather than rigidly sticking to one method. Through examples and reflective questions, the article guides readers in understanding and applying these five techniques to improve communication and influence.

(andiroberts.com)

Misc influence

nvmath-python: Unleashing NVIDIA's Math Libraries in Python

2025-09-22

nvmath-python: Unleashing NVIDIA's Math Libraries in Python

nvmath-python brings the power of NVIDIA's math libraries to the Python ecosystem, offering intuitive APIs for full access to features across various execution spaces. It seamlessly integrates with existing Python array/tensor frameworks, focusing on functionalities missing from them. The library exposes all parameters of the underlying cuBLASLt library, some unavailable in other wrappers. Furthermore, it allows custom prologs and epilogs for FFT functions, compiling them to LTO-IR for optimized performance. Examples demonstrate matrix multiplication and FFT operations, showcasing its capabilities.

(github.com)

Development Math Libraries

Obsidian Plugin: Note Codes – Unique Codes for Your Notes

2025-09-22

Obsidian Plugin: Note Codes – Unique Codes for Your Notes

A new Obsidian plugin, Note Codes, assigns a unique 4-character code to each note, enabling quick referencing from handwritten notes or other locations. Codes are generated using SHA-256 hashing of the note's path and Base32 encoding. For improved readability, similar-looking characters are omitted. The open-source plugin includes a protocol handler, allowing notes to be opened via obsidian://note-codes/open?code=XX-XX.

(ezhik.jp)

Development Note Management

Pointer Bit Manipulation: Unlocking Hidden Performance with Unused Bits

2025-09-22

Pointer Bit Manipulation: Unlocking Hidden Performance with Unused Bits

A 64-bit pointer can address far more memory than even the most powerful supercomputers need. This article explores pointer tagging, a clever technique leveraging unused bits in pointers (typically in the upper and lower ranges) to store extra data, such as type information or flags. This improves memory efficiency and performance by reducing cache misses and streamlining dynamic polymorphism. The article illustrates this with a C++ implementation, demonstrating how to pack and unpack data within pointers and showcasing its application in abstract syntax trees and other complex data structures.

(vectrx.substack.com)

Development pointer tagging

arXivLabs: Community Collaboration on New arXiv Features

2025-09-22

arXivLabs is a framework for collaborators to develop and share new arXiv features directly on the arXiv website. Participants must adhere to arXiv's values of openness, community, excellence, and user data privacy. Have an idea to improve the arXiv community? Learn more about arXivLabs.

(arxiv.org)

Development

Emulating a Ukrainian Retro Computer: Bringing Childhood Games Back to Life

2025-09-22

The author revisited their childhood memories of the Fahivets-85 computer from Ukraine and decided to emulate it. They built a WebAssembly-based emulator that currently runs a simple game called "Rain". The development involved implementing the CPU instruction set, simulating the IO controller, keyboard, and display. AI assistance was used to generate code, and the emulator's functionality was gradually refined until the game successfully ran. While some issues remain, this is an impressive accomplishment.

(rmazur.io)

Development

Earth's Future: Venus Lite or Something Else?

2025-09-22

Earth's Future: Venus Lite or Something Else?

A new study simulates Earth's fate 3.5 billion years from now when large-scale subduction ceases. Even in the best-case scenario, the simulations show Earth's surface temperature exceeding 100 degrees Celsius, turning into a boiling planet. However, even with increased atmospheric CO2, Earth wouldn't reach Venus's extreme levels. This suggests Venus's hellish state may result from a unique catastrophic event rather than simple runaway greenhouse effect. This research challenges prior assumptions and significantly contributes to our understanding of the terminal state of rocky planets.

(www.quantamagazine.org)

Tech Earth's future

Groundbreaking Study Reorganizes Psychopathology Using Data-Driven Approach

2025-09-22

Groundbreaking Study Reorganizes Psychopathology Using Data-Driven Approach

A large-scale online survey has revolutionized our understanding of psychiatric classification. Researchers analyzed data from 14,800 participants to reorganize DSM-5 symptoms, revealing 8 major psychopathology spectra (e.g., Externalizing, Internalizing, Neurodevelopmental) and 27 subfactors. Surprisingly, common disorders like Major Depressive Disorder, Generalized Anxiety Disorder, and PTSD didn't emerge as distinct symptom clusters but rather dissolved into finer-grained, homogenous symptom groups. This challenges existing diagnostic criteria, suggesting that mental illnesses aren't fixed entities but variable combinations of symptoms. The findings have major implications for future psychiatric classification but also highlight the need for further research to refine the model.

(www.psychiatrymargins.com)

AI

Dev's Wild Ride: Debugging Snarfus

2025-09-22

Dev's Wild Ride: Debugging Snarfus

A developer encountered a problem while using Snarfus software: the fisterfunk wouldn't communicate with the shamrock portal. After a lot of tinkering, they found a solution: connecting the backside Snarfus stagnator to the backside shamrock Klingon troglodyte emulater. The tutorial details this bizarre fix, involving a series of seemingly nonsensical terminal commands and file paths, ultimately getting Snarfus working.

(anniemueller.com)

Development quirky solutions

Earth's 60-Year-Old Secret Companion: A New Quasi-Moon Discovered

2025-09-22

Earth's 60-Year-Old Secret Companion: A New Quasi-Moon Discovered

Astronomers have discovered a near-Earth asteroid named 2025 PN7, a quasi-moon that has been orbiting Earth unnoticed for about 60 years. This roughly 30-meter-diameter space rock is smaller than any previously known quasi-moon and its orbit shifts between a near-Earth orbit and a horseshoe orbit. Researchers hypothesize it may originate from the Arjuna asteroid belt, or even be a fragment of the Moon. While in close proximity to Earth, it poses no threat and offers valuable opportunities for solar system research and testing planetary exploration technologies.

(www.cnn.com)

Tech near-Earth asteroid

AI Cracks Long-Standing Fluid Dynamics Challenge

2025-09-22

AI Cracks Long-Standing Fluid Dynamics Challenge

Researchers have leveraged AI to make a breakthrough in fluid dynamics. Using Physics-Informed Neural Networks (PINNs), they discovered new families of unstable singularities with unprecedented accuracy—precise enough to predict Earth's diameter within centimeters. This achievement heralds a new era of computer-assisted mathematics, combining deep mathematical insights with cutting-edge AI to tackle long-standing challenges in mathematics, physics, and engineering.

(deepmind.google)

Tech

Observability for Claude Code: Measuring the Impact of AI Coding Assistants

2025-09-21

Observability for Claude Code: Measuring the Impact of AI Coding Assistants

AI coding assistants like Claude Code are transforming development workflows, but measuring their impact remains a challenge. This post details how to build an observability pipeline using OpenTelemetry and SigNoz to gain actionable insights into Claude Code usage. By tracking metrics like token consumption, sessions, requests, and performance trends, teams can understand how Claude shapes workflows, identify issues proactively, and make data-driven decisions about scaling AI-assisted coding. The authors demonstrate how to connect Claude Code's monitoring hooks, visualize data in SigNoz dashboards, and ultimately transform Claude Code from a black box into a measurable contributor to developer productivity.

(signoz.io)

Development

A Tiny OS in Under 1000 Lines of Zig: OS-1000-lines-zig

2025-09-21

A Tiny OS in Under 1000 Lines of Zig: OS-1000-lines-zig

OS-1000-lines-zig is an impressive project that implements a lightweight operating system in under 1000 lines of Zig code. This monolithic kernel OS supports basic process and memory management, and features a simple command-line interface. With just a Zig compiler, developers can easily clone, build, and run the OS. The project boasts a clean code structure with components such as kernel implementation, common functions, and a build script, and includes testing and contribution guidelines. Future development plans include expanding process management, memory management, the command-line interface, networking, and file systems.

(github.com)

Development

Red Onion Skins: An Unexpected Ally in the Fight for Sustainable Solar Energy

2025-09-21

Red Onion Skins: An Unexpected Ally in the Fight for Sustainable Solar Energy

Researchers from the University of Turku have developed a bio-based UV protection film for solar cells using an extract from red onion skins. This film outperforms commercial plastic films, blocking almost all harmful UV light while maintaining high visible light transmittance. The key is anthocyanins and other compounds in the onion skin that provide both UV absorption and stability. This sustainable alternative could revolutionize solar cell protection, especially for applications like smart packaging and wearable devices where recycling is difficult.

(www.zmescience.com)

Tech solar cells

Reversing Aging: The Astonishing Link Between Psychological and Biological Time

2025-09-21

Reversing Aging: The Astonishing Link Between Psychological and Biological Time

Harvard psychologist Ellen Langer's "counterclockwise study" reveals that aging is not just a biological process, but a narrative one. Our beliefs about aging impact our physical capabilities. In the study, a group of men in their seventies lived as if it were 1959 for five days; afterwards, they showed improvements in hearing, posture, grip strength, and even appeared younger. This isn't magic, but the power of context: change the context, change the possibilities. Our ingrained assumptions about aging may limit our potential, while present moment awareness and mindful flexibility allow us to better navigate aging.

(domofutu.substack.com)

AI mind-body connection

Prehistoric Symbols Rewrite the Story of Writing

2025-09-21

Prehistoric Symbols Rewrite the Story of Writing

Challenging the long-held belief that Sumerians invented writing around 3400 BCE, new research suggests prehistoric humans used a consistent system of symbols thousands of years earlier. These symbols, found across multiple European caves, consist of simple shapes like dots, lines, and triangles. This suggests a far earlier development of symbolic thinking and information exchange than previously thought, potentially hinting at an ancient global network of communication. The discovery redefines our understanding of writing's origins and implies advanced cognitive abilities in early humans.

(www.openculture.com)

Tech Prehistoric symbols Writing origins Human cognition

Newton's Infinite Summation: A Story of Discovery

2025-09-21

Newton's Infinite Summation: A Story of Discovery

While studying mathematics, a young Newton ingeniously solved the problem of finding the area of a circle using infinite series through analogy and observation. Instead of directly tackling the circle, he investigated the areas under a series of more general curves. By observing patterns in these areas, he deduced an infinite series representation for the area of a circle. This process was full of guesswork and verification. Newton not only found an approximation for the area but also developed the powerful theory of power series, laying the foundation for the development of calculus. This showcases Newton's extraordinary mathematical intuition and problem-solving skills, and teaches us that changing our perspective on a problem can often lead to greater breakthroughs.

(www.quantamagazine.org)

Misc Power Series

Timesketch: Open-Source Collaborative Forensic Timeline Analysis

2025-09-21

Timesketch: Open-Source Collaborative Forensic Timeline Analysis

Timesketch is an open-source tool for collaborative forensic timeline analysis. It allows you and your collaborators to easily organize and analyze multiple timelines simultaneously. Add richness to your raw data with annotations, comments, tags, and stars. Note that while the code is owned by Google, this is not an official Google product.

(github.com)

Development timeline analysis

US-UK Tech Prosperity Deal: A Quantum Leap in Collaboration

2025-09-21

US-UK Tech Prosperity Deal: A Quantum Leap in Collaboration

President Trump and Prime Minister Starmer signed the Technology Prosperity Deal (TPD), a landmark agreement boosting US-UK collaboration in AI, civil nuclear energy, and quantum computing. The deal fosters joint initiatives between leading research institutions, streamlining regulations, accelerating breakthroughs in healthcare and energy, and enhancing national security. Key areas include AI standards development and scientific research, securing nuclear fuel supply chains, and establishing quantum technology benchmarks. This collaboration promises transformative benefits for both nations.

(www.whitehouse.gov)

Tech tech collaboration

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