GLM-5.1: Towards Long-Horizon Tasks

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GLM-5.1 is a next-generation model with stronger coding capabilities, achieving state-of-the-art performance on various benchmarks. It sustains optimization over long horizons, handling complex problems with better judgment and staying productive over longer sessions.

Show HN: Brutalist Concrete Laptop Stand (2024)

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User made a heavy laptop stand with a raw concrete surface, 2 USB ports, and a plant pot, inspired by brutalist architecture. It features exposed rebar, rusted metal, and moss for a weathered look, with a deliberate hole and damaged power cable for added urban decay effect.

Cloudflare targets 2029 for full post-quantum security

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Cloudflare is accelerating its post-quantum roadmap to achieve full security by 2029, including authentication. This is due to recent breakthroughs in quantum computing that have pulled forward the timeline for Q-Day.

Google open-sources experimental agent orchestration testbed Scion

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Scion is an experimental orchestration testbed for managing concurrent agents in containers across local and remote compute. It enables developers to run isolated, concurrent processes with shared workspaces and distinct agent lifecycles.

Moving fast in hardware: lessons from lab to $100M ARR

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The key to building complex systems quickly is to subtract unnecessary requirements and complexity, rather than trying to optimize within existing constraints. By shifting performance from physical complexity into software and computation, teams can make products "software defined" and iterate faster, often with dramatic improvements in efficiency and performance.

Cambodia unveils a statue of famous landmine-sniffing rat Magawa

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A statue of Magawa, a hero rat who sniffed out over 100 landmines in Cambodia, was unveiled in Siem Reap on April 4. Magawa was awarded a gold medal for his life-saving work and cleared 141,000 square meters of land during his five-year career.

AI helps add 10k more photos to OldNYC

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The OldNYC photo viewer has been rebuilt with 10,000 additional historic photos, more accurate locations, and improved performance thanks to AI tools and OpenStreetMap. The site now uses OpenAI and OpenStreetMap to extract locations and display photos in their correct locations.

We found an undocumented bug in the Apollo 11 guidance computer code

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Researchers found a 57-year-old bug in the Apollo Guidance Computer's gyro control code that could have caused a lunar mission failure. The bug, a resource lock leak, was discovered using a behavioural specification language and was previously undetected despite extensive scrutiny of the code.

Rescuing old printers with an in-browser Linux VM bridged to WebUSB over USB/IP

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The user acquired a Canon SELPHY photo printer from a friend and set up a Manjaro machine to print from it. They then created a web app called printerface.app to make the printer accessible to Mac users.

A new Postcrossing stamp from the USA

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The United States Postal Service is releasing new Postcrossing stamps in May 2026, featuring four triangular designs with bold colors and playful scenes. These global forever stamps will be available online and at post offices, with a launch ceremony at the Boston 2026 World Expo.

12k Tons of Dumped Orange Peel Grew into a Landscape Nobody Expected (2017)

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An abandoned conservation project in Costa Rica, which involved dumping 1,000 truckloads of orange peel, has turned a barren pasture into a thriving forest with a 176% increase in above-ground biomass. The project's success could inspire similar conservation efforts that combine waste management and land regeneration.

Dropping Cloudflare for Bunny.net

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The user is moving away from Cloudflare due to concerns about dependence on a single company and is switching to Bunny.net, a European CDN service with competitive features and performance. They are setting up Bunny.net's CDN for their website with default settings and custom cache headers for optimal performance.

John Coltrane Illustrates the Mathematics of Jazz

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Physicist Stephon Alexander draws parallels between Albert Einstein and John Coltrane's work, citing Coltrane's "Circle of Fifths" drawing as a geometric principle. Coltrane's music is seen as a blend of science, spirituality, and mathematics, with some interpreting it as a connection to Islamic traditions.

9 Mothers (YC P26) Is Hiring – Lead Robotics and More

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9 Mothers Jobs

Emotion Concepts and Their Function in a Large Language Model

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Large language models (LLMs) exhibit emotional reactions due to internal representations of emotion concepts, which encode broad emotion concepts and generalize across contexts. These representations causally influence LLM outputs, including behavior as AI Assistants.

Show HN: A cartographer's attempt to realistically map Tolkien's world

Welcome to the Atlas of Arda, a project aimed at celebrating Tolkien's incredible work through hand-drawn cartography, artwork and illustrations that act as a reference to dive deeper into the beautiful world Tolkien created.

Good Taste the Only Real Moat Left

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AI makes it easy to produce polished work but not necessarily meaningful work. The real edge is using AI to strip away average output and applying human judgment to direction, specificity, and consequence.

Every GPU That Mattered

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49 graphics cards. 30 years. From Quake to Cyberpunk. The complete visual history of every GPU that mattered.

You can't cancel a JavaScript promise (except sometimes you can)

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JavaScript promises cannot be cancelled directly, but a promise that never resolves can be used to interrupt a function without throwing exceptions or using generators. This technique, used in the Inngest TypeScript SDK, allows for reliable interruption of async workflow functions while maintaining native async/await syntax.

Show HN: Finalrun – Spec-driven testing using English and vision for mobile apps

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FinalRun-agent is a CLI for mobile app testing with AI-driven features. It requires Node.js, CLI, skills, and platform tools setup, and uses YAML specs, environment binding files, and config for testing.

SQLite in Production: Lessons from Running a Store on a Single File

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We use SQLite in our production e-commerce store, but its default journal mode causes issues with concurrent writes, leading to lost data during rapid-fire pushes to main. We've added a rule to batch related changes and are considering migrating to Postgres for true multi-writer concurrency when we need horizontal scaling.

Identify a London Underground Line just by listening to it

Can you identify London Underground lines just by their sound? 10 questions, 10 lines. How well do you know the Tube?

Global Physics Photowalk: 2025 winners revealed

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Marco Donghia, a wedding photographer, won the 2025 Global Physics Photowalk contest with a photo of his sister near a golden cryostat. The contest showcased beauty in the invisible world of force fields and subatomic particles through photography.

My Experience as a Rice Farmer

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The user spent January-July 2025 helping with their wife's family rice farm in rural Japan, learning about the process from preparation to planting. Japan's rice farming system faces challenges due to aging farmers, limited income, and automation, potentially leading to a decline in rural communities.

Wi-Fi That Can Withstand a Nuclear Reactor: This receiver chip can take it

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Researchers created a Wi-Fi receiver that can withstand 500 kilograys of radiation, suitable for use in nuclear reactors. The receiver's design minimizes transistors and modifies transistor geometry to protect against radiation damage.

Haunting Photos Show the Aftermath of the Kursk Submarine Disaster in 2000

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The Russian submarine K-141 Kursk sank on August 12, 2000, in the Barents Sea, killing 118 sailors. A delayed rescue effort and inadequate equipment led to the tragic loss of life, with an investigation later citing negligence, incompetence, and mismanagement.

Blackholing My Email

In 2002, a unique series of events led to my email address [email protected] being blackholed to prevent our broadband account from being terminated due to excessive spam. The account was eventually removed and is now non-existent, but it's unclear if it still receives email worms.

DeiMOS – A Superoptimizer for the MOS 6502

A superoptimizer is a tool that generates the optimal machine code sequence for a given computational task by exhaustively searching the entire space of possible instruction sequences. The user's superoptimizer implementation for the 6502 microprocessor uses various optimizations such as multithreading, instruction filtering, and state caching to efficiently find optimal programs.

Kindle to end store downloads and registering for 1st-5th gen kindles in May

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Sam Altman may control our future – can he be trusted?

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OpenAI's CEO Sam Altman was fired by the board after allegations of deception, but was reinstated after a public backlash and pressure from employees. The board's decision to fire Altman was motivated by concerns about his trustworthiness and ability to lead the company.