Bun Dumps Zig for Rust!

Show HN: I reverse-engineered the world maps of Test Drive III (1990 DOS game)

Key Points

• The project reverse engineers Test Drive III’s maps, assets, and file formats and provides browser and export tooling.
• The article explains the game’s mesh and map storage formats, including vertex arrays, polygon records, and 32×16 tile grids.
• The repository includes documented specifications and tools for extracting OBJ files, PNG images, sprites, and other game resources.

U of T researchers demonstrate AI worm could target any online device

Key Points

• University of Toronto researchers demonstrated an adaptive AI-powered worm in a secure isolated lab.
• The article says free, publicly accessible open-weight AI models may be sufficient to build this kind of malware.
• Researchers disclosed the work with safeguards and warned that current cyber defences are not yet prepared for the threat.

DIY Bipedal Robot Used Pneumatic "Air-Muscles" Instead of Motors

Key Points

• Shadow Walker was a late-1980s DIY humanoid robot built by Richard Greenhill and the Shadow Group.
• The robot used 28 pneumatic air-muscles instead of motors and could stand and balance but not reliably walk.
• The article compares the project with broader robotics milestones, including Honda’s humanoid development leading to P2 and ASIMO.

AI Engineers aren't safe from being replaced by AI

Key Points

• The article says AI engineers may be more vulnerable to replacement than many developers assume.
• It argues that "AI" groups together technically different systems such as LLMs, computer vision models, recommender systems, and game algorithms.
• It says the title "AI engineer" is often too broad to clearly describe a specific skill set or job function.

Life and work is not meant to be spent in isolation

Key Points

• The article argues that many major software creators are still active and reachable today.
• It lists prominent and Swedish-speaking programmers as potential contacts for readers.
• The author encourages direct outreach and offers his own email as a starting point.

Show HN: Phive, a Gomoku-like game to play with friends or solo

Key Points

• Phive is a Gomoku-like browser game with multiplayer and AI modes.
• The game uses a placement phase followed by a movement phase with connectivity restrictions.
• Winning requires making five pieces in a row horizontally, vertically, or diagonally.

Show HN: Edsger – A handwritten Clojure REPL for the reMarkable 2

Key Points

• Edsger is a handwritten Clojure REPL built for the reMarkable 2 tablet.
• The article includes a demo video, architecture diagram, transcript, and links to source code.
• The project references multiple related open-source tools used in the reMarkable modification ecosystem.

Recovering Eric Graham's 1987 Amiga Juggler raytracer source code

Key Points

• AlphaPixel recovered Eric Graham’s Amiga Juggler source from an archived ADF disk image.
• A Python port of extract-adf was created to make Amiga OFS ADF extraction easier on modern systems.
• The article emphasizes preservation, format accessibility, and validation of the recovered archive.

Jonathan Franzen on Talent, Theatre, and His Next Novel

Key Points

• Jonathan Franzen says “A Talent for Seeming” comes from the early pages of a novel-in-progress about a teenage girl drawn to acting in 1970s Montana.
• He cites Shakespeare, a remembered production of *As You Like It*, and his own high-school theatre experience as major inspirations.
• Franzen describes Adele’s movement from religious devotion toward theatre as both a source of dramatic conflict and a shift from one belief system to another.

Hacking your PC using your speaker without ever touching it

Key Points

• The article reports that the Katana V2X can allegedly be attacked from about 15 meters away without pairing or physical contact.
• CTP, the device’s proprietary protocol, is used for both configuration and firmware updates, and its authentication key is described as static.
• The researcher says patched firmware was accepted when the CHK2 SHA-256 checksum was corrected, demonstrating a lack of stronger firmware signing protections.

OpenRidingController – DIY horse riding controller for the PC

Key Points

• OpenRidingController is a DIY PC/Mac controller built to emulate horse-riding actions in games.
• The hardware uses an RP2040 Zero, four TCRT5000 IR sensors, and a frame made from 3D-printed and metal parts.
• It supports keyboard, mouse, and DirectInput emulation, but not keyboard-to-console adapters due to USB composite limitations.

Every Byte Matters

Key Points

• The article shows that hardware-aware memory behavior can materially affect performance even in simple O(N) code.
• System inspection reveals a 64-byte cache line and a multi-level cache hierarchy with different sharing patterns and latencies.
• The post explains how to calculate per-core cache sizes and cache-line counts from machine-reported cache data.

PlayStation Architecture

Key Points

• Sony designed the PlayStation architecture to remain relatively simple and practical for 3D development.
• The console’s CPU uses the MIPS I ISA and reflects the early-1990s rise of RISC processor design.
• The hardware includes a split bus structure, instruction cache, scratchpad memory, and 2 MB of EDO DRAM RAM.

Piramidal (YC W24) – Software Engineers – NYC Onsite

Key Points

• Piramidal is hiring senior frontend, backend, and infrastructure engineers for onsite roles in NYC.
• The company’s stack includes Python, Go, Terraform, React, and TypeScript across cloud and on-premises systems.
• The roles involve early responsibility in architecture, implementation, and hiring, with work tied to foundational AI and neuroscience.

Leiden Declaration on Artificial Intelligence and Mathematics

Key Points

• The Declaration says AI is significantly changing mathematical research and practice.
• It sets out core values of mathematics, including proof, attribution, transparency, evaluation, and autonomy.
• It warns that recent AI developments threaten these values, especially for students and early-career mathematicians.

What I've learned about the trombone

Key Points

• The trombone’s slide provides continuous pitch control and enables smooth glissandos.
• Sound is created by buzzing into the mouthpiece, while slide position and embouchure together determine pitch.
• The article uses standing waves, frequency, and harmonics to explain how different notes and timbres are produced.

Bun Has Been Converted to Rust. Now What?

Key Points

• Bun replaced its Zig implementation with a Rust rewrite generated mostly by Claude Code agents and merged it into the main branch.
• The rewrite passed 99.8% of the existing test suite and showed neutral-to-faster benchmarks with a slightly smaller binary.
• The article questions the safety benefits because the port reportedly uses more than 10,000 `unsafe` blocks and closely mirrors the original Zig code.

Turkey Hacked the Hair Transplant Industry

Key Points

• Turkey’s hair-transplant leadership is presented as the result of innovation and specialization, not just low-cost medical tourism.
• The article cites a global hair-transplant market of $7.33 billion to $11.61 billion in 2024 and Turkish medical-tourism revenue of $3 billion in 2025.
• It highlights adapted medical tools, machine-learning use, and long-term institutional development as drivers of Turkey’s position.

32GB of DDR5 now costs $375 – AI shortage continues to squeeze PC building

Key Points

• The cheapest 32GB DDR5 RAM kits have reached about $375 in 2026.
• The article links higher RAM and SSD prices to AI-driven manufacturing constraints across the PC supply chain.
• AMD and Intel are highlighting alternative products and older platforms as cost-saving options for PC buyers.

Uber's $1,500/Month AI Limit Is a Useful Signal for AI Tool Pricing

Key Points

• Uber set a $1,500 monthly cap per employee, per AI coding tool, for agentic coding software.
• The article estimates that two tools per engineer would imply a $36,000 annual spending ceiling.
• That estimated AI spend equals about 11% of the cited median annual compensation for Uber software engineers in the USA.

Which sparkling water is the best?

Key Points

• Numen ranked first in overall liking in a blind tasting of 14 sparkling waters available in Paris.
• San Pellegrino won the head-to-head tournament and led the Bradley-Terry strength model.
• The analysis found that lower minerality and solid fizz were associated with higher preference.

Meta workers can opt out of being tracked at work up to 30 min

Key Points

• Meta now allows employees to pause AI-training data collection for up to 30 minutes and request exemptions.
• The MCI tool logs keystrokes and mouse clicks to provide training data for Meta’s AI systems.
• Employee backlash focused on privacy, battery drain, internet usage, and the broader context of workforce cuts.

Take Action: LAPD Removed Crime Location Data. Here's Why It Matters

Key Points

• SpotCrime says LAPD removed block-level crime locations from its open crime-data feed during a records-system transition.
• The post says this change limits the public’s ability to determine where crimes occurred in Los Angeles.
• The article urges readers to contact LAPD and Los Angeles oversight bodies to seek restoration of detailed location data.

Thomas Mann: Goethe Heartened by Panama (As Suez for English, or Danube-Rhine)

Key Points

• Thomas Mann uses a visit to Goethe’s Frankfurt childhood home to frame his essay.
• The article links Goethe’s world stature to his German bourgeois origins.
• Mann contrasts a national-cultural view of Goethe with a broader, long-term historical view supported by Thomas Carlyle.

Shopify Is Down

Key Points

• Shopify reported a June 3, 2026 incident affecting admin, checkout, storefront, Retail POS, and Support access.
• The company said it identified the problem by 10:37 EDT and saw recovery after mitigation efforts.
• Shopify later marked the issue resolved and continued monitoring through a final update at 15:13 EDT.

Show HN: Tired of duct-taping access control into agent prompts. Here's the fix

Key Points

• Cast moves agent access control from prompts into configuration and routing.
• The system is self-hosted, open source, MIT-licensed, and built for multi-user, multi-agent setups.
• First-run flow includes a chat-based builder that scaffolds agents and supports deployment across Slack, Telegram, and the web.

DaVinci Resolve 21

Key Points

• DaVinci Resolve 21 adds a Photo page, AI-assisted tools, and broad workflow updates across editing, color, graphics, and audio.
• The release expands immersive and social media workflows with foveated rendering, vertical video support, and direct publishing integrations.
• New production tools include .lottie support, ATEM Mini ISO timeline import, and enhanced noise reduction for restoring difficult footage.

Man out of Time: The travels and ecstasies of a Russian aesthete

Key Points

• The article reviews the 2026 English edition of Pavel Muratov’s *Evocations of Italy*.
• It compares Muratov’s understanding of Italian Renaissance art with responses by W.B. Yeats and Ezra Pound.
• The central theme is the perceived ability of the d’Este and Ferrara frescoes to unify myth, daily life, and cosmic order.

He Blew the Whistle on DOGE. Then His Brakes Were Cut

Key Points

• Berulis alleged DOGE improperly accessed and exfiltrated NLRB data, with later login attempts from a Russian IP address.
• He sued Elon Musk for defamation after Musk amplified claims on X that Berulis’ whistleblower complaint was deliberately false.
• Berulis reported prior threats and a subsequent car crash in which he says he discovered cut brake lines.

A Post-Quantum Future for Let's Encrypt

Key Points

• Let’s Encrypt plans to pursue Merkle Tree Certificates for post-quantum web authentication.
• The article says policy timelines and major industry commitments have made post-quantum authentication an immediate planning issue.
• MTCs are presented as a way to avoid the large handshake overhead caused by conventional post-quantum signatures in TLS.

I Found a Bug in Apple's Fsck_hfs

Key Points

• The article says `fsck_hfs` on macOS Sequoia falsely reports corruption on 24 TB+ HFS+ volumes.
• The reported cause is a cache exhaustion bug in the hfs-683.x version line of Apple’s tool.
• The issue is said to affect 8 GB RAM systems during extended attributes checks, while 16 GB+ systems are unaffected.

Are You Enjoying Our Linguine? (2025)

Key Points

• An American family visits an unconventional gelateria in central Rome and confronts unfamiliar flavors and presentation.
• The family responds by asking many detailed questions about ingredients, labels, and food terminology.
• The shop is portrayed as a small, moderately expensive, modern Rome-based franchise that differs from traditional Roman culinary expectations.

Gemma 4 12B: A unified, encoder-free multimodal model

Key Points

• Gemma 4 12B is a new multimodal model designed to run locally on laptops with 16GB of memory.
• Its main technical distinction is an encoder-free architecture that integrates vision and audio directly into the LLM backbone.
• Google says the model nears the performance of its 26B MoE model, is Apache 2.0 licensed, and includes Multi-Token Prediction drafters for lower latency.

ESP32-S31

Key Points

• ESP32-S31 is a dual-core 32-bit RISC-V microcontroller running at up to 320 MHz with 60 GPIOs.
• It targets advanced IoT and embedded AI workloads, including neural network inference, computer vision, and intelligent audio.
• The chip combines Wi-Fi 6, IEEE 802.15.4, Bluetooth 5.4 LE, Bluetooth Classic, and 1000 Mbps Ethernet MAC in one platform.

Show HN: Nutrepedia – nutrition info in 29 locales built with Clojure and Htmx

Key Points

• Nutrepedia offers nutrition information across 29 regional locales.
• The sample blueberries page provides detailed nutrition values per 1 cup (148g).
• The site includes food discovery features such as featured foods and a daily food pick email signup.

Fluid Simulation for Dummies

Key Points

• The tutorial explains simple 3D fluid simulation with a focus on implementation instead of full mathematical derivation.
• It uses an incompressible fluid model and visualizes motion by tracking dye density in the fluid.
• The simulation is implemented in C using 1D arrays to store 3D density and velocity fields.

Uber to cut 23% of jobs in HR

Key Points

• Uber is reportedly cutting 23% of jobs in its People and Places division.
• The company says the layoffs affect less than 1% of its 34,000 global workforce and are not tied to AI.
• Uber is also requiring previously remote HR employees to comply with its three-day-a-week office rule.

Skyvern (YC S23) Is Hiring Open-Source Loving DevRel Engineers

Key Points

• Skyvern is hiring a DevRel-focused role to expand developer awareness of its browser automation AI agent.
• The job includes long-form and short-form content creation, social media ownership, and community engagement.
• Skyvern wants a technically credible communicator who can explain, demo, and ideally use the product directly.

The Public Should Own Half of the Big A.I. Companies

Key Points

• The article says AI’s social and economic impact will be vast, making ownership and control a central policy issue.
• It argues that generative AI relies on collectively produced human knowledge and creative works used in model training.
• Bernie Sanders proposes a sovereign wealth fund funded with stock from major AI companies to give the public ownership and influence.

REST3D: Reconstructing Physically Stable 3D Scenes from a Single Image

Key Points

• REST3D reconstructs simulation-ready 3D scenes from a single RGB image.
• The framework uses a scene-tree representation to model object states and support relationships.
• Reported results show improved physical stability and reduced errors on synthetic and real-world datasets.

MacBook Neo Is So Popular That Apple Doubled Production

Key Points

• Apple reportedly raised MacBook Neo shipment targets from 5 million to 10 million units for 2026.
• Tim Cook said MacBook Neo demand exceeded Apple’s expectations and helped drive record first-time Mac buyers.
• The laptop’s low price and strong sales are highlighted as influencing the broader PC market, including Dell’s response.

Show HN: Rscrypto, pure-Rust crypto with industry leading public benches

Key Points

• rscrypto is a single pure-Rust cryptography crate with broad primitive coverage and no required C/OpenSSL dependency path.
• The article claims benchmark leads against matched Rust baselines on Linux CI and Apple Silicon test runs.
• The crate emphasizes portable Rust reference implementations, optional acceleration, no_std/WASM support, and expanded RSA functionality.

If AI Data Centers Are So Great, Why Are They Being Built in Secret?

Key Points

• The article says thousands of residents across 49 states reported concerns about nearby AI data centers, with transparency cited most often.
• Meta’s Hyperion project in Louisiana is presented as a major example of the size and power demands of new AI campuses.
• The article also cites major AI infrastructure expansion by Google in Arkansas and Elon Musk in Tennessee.

Launch HN: Hyper (YC P26) – Company brain to power agentic development

Key Points

• Hyper aims to provide AI agents with persistent, structured company context rather than one-off session memory.
• The product uses a two-layer memory system of raw episodes and extracted facts linked in a knowledge graph.
• Its retrieval stack combines semantic search, full-text search, provenance, permissions, and integrations with agent-development tools.

Angular v22

Key Points

• Angular announced the release of Angular v22.
• The Angular team says it aims to provide a high-quality stream of features and improvements with each release.
• The release is positioned as part of Angular’s effort to make developer workflows smoother for building applications.

I was recently diagnosed with anti-NMDA receptor encephalitis

Key Points

• The author describes a recent diagnosis of anti-NMDA receptor encephalitis after severe neurological and psychiatric symptoms.
• He says the illness was initially misdiagnosed as psychiatric before neurological testing at Brigham and Women’s Hospital led to treatment.
• The author reports improvement after IVIG and steroids and says he has joined a clinical trial testing satralizumab.

Gooey: A GPU-accelerated UI framework for Zig

Key Points

• Gooey is an early-stage GPU-accelerated UI framework for Zig with macOS, Linux, and browser targets.
• It combines declarative UI, state/UI separation, retained widgets, and native platform integrations.
• The project includes zero external Zig package dependencies, multiple demo apps, and a testable todo example.

Sixteen Kids and a Hit Man (2024)

Key Points

• The article says Christopher Pence used Tails to access the dark web in 2021 and seek a hit man.
• Pence is identified as a Microsoft systems engineer with no criminal record and no known violent history.
• The piece contrasts the allegation with his large family life, rural lifestyle, and Evangelical Christian background.

Embryos shape their limbs: a key discovery of "genetic brakes"

Key Points

• The study identifies PRC1 and PRC2 as key regulators of embryonic limb development.
• These Polycomb complexes silence early genes after limb formation begins, acting as genetic brakes.
• Mouse experiments showed that disrupting these systems causes abnormal gene expression and severe developmental defects.

Stop Killing Games

Key Points

• The article says California AB 1921 reflects growing momentum behind efforts to stop developers from disabling games after server shutdowns.
• It argues that server shutdowns are enabled by proprietary software structures, including closed source, DRM, and server-locked authorization.
• The article links gamer frustration over dead games to long-standing free software arguments associated with Richard Stallman and the Free Software Foundation.

Elixir v1.20 released: now a gradually typed language

Key Points

• Elixir v1.20 adds annotation-free type inference and gradual type checking as the first milestone of its type system rollout.
• The system is designed to find dead code and guaranteed runtime type failures while keeping false positives low.
• Elixir’s `dynamic()` type and type narrowing are central to the design, and the implementation performed strongly on a type-narrowing benchmark.

New Texas Instruments 5532 chips are not the 5532's we've used for decades

Key Points

• Brian Roth’s GroupDIY post says newer TI 5532 chips differ from older 5532 versions.
• The article warns against assuming the 5532 part number guarantees historical equivalence.
• The issue is especially relevant to analog audio design, maintenance, and repair.

Artificial intelligence is not conscious – Ted Chiang

Key Points

• Anthropic’s language about Claude is presented as strongly anthropomorphic.
• The article argues that LLM fluency should not be mistaken for consciousness or moral agency.
• Chatbot conversations are framed as generated role-play or collaborative text creation, not interaction with a conscious being.

GoPro warned it may not survive

Key Points

• GoPro issued a going-concern warning after revenue fell 26% and memory prices rose 80% to 115%.
• The article links the pressure to memory suppliers shifting from consumer DRAM to AI-focused HBM production.
• GoPro is seeking strategic alternatives, has lender waivers in place, and is exploring defence and aerospace markets while cutting staff.

Brume is a 24-voice multi-timbral desktop synth for the CM5

Key Points

• Brume turns a Raspberry Pi Compute Module 5 and touchscreen into a four-part, open-source synthesizer.
• It combines four synthesis engines with a shared filter and effects path, using live mathematical sound generation instead of samples.
• A single class-compliant USB connection provides DAW-ready multichannel audio, MIDI, and clock, with configurable controller support.

Show HN: Mnemo – local-first AI memory layer for any LLM (Rust, SQLite,petgraph)

Key Points

• Mnemo stores LLM-derived entities and relationships in a persistent local knowledge graph built on SQLite and petgraph.
• Its retrieval flow uses search, graph traversal, filtering, and ranking to generate context for future prompts.
• The project supports local and hosted LLM providers and offers Docker, Rust binary, and Python SDK integration paths.

Building iOS Apps with Doom Emacs

Key Points

• The author built and shipped an iOS app from Doom Emacs using a custom iOS module.
• Apple’s command-line tools provide the core capabilities normally accessed through Xcode.
• The setup combines build, simulator, formatting, LSP, and project-generation tools into a modular Emacs workflow.

Show HN: Lint Your Markdown with ESLint

Key Points

• eslint-markdown is a package for linting Markdown with ESLint.
• It adds rules intended to be used alongside @eslint/markdown.
• The package avoids overlapping with ESLint’s built-in Markdown rules and is recommended for combined use with native Markdown support.

A Man Who Reads Books for a Living (One Every Two Days)

Key Points

• Clarke Speicher works as a professional reader who evaluates literature for screen adaptation.
• His coverage includes both a detailed synopsis and an analysis of cinematic feasibility.
• Executives and producers may rely on his reports when deciding whether to pursue adaptation projects.

Ableton Extensions SDK

Key Points

• Ableton introduced a new open JavaScript SDK for custom Extensions in Live 12.4.5.
• Extensions can read and modify Live Sets, including tracks, clips, MIDI, devices, and tempo.
• The feature is limited to Live 12 Suite Beta 12.4.5 or later and is built on NodeJS for macOS and Windows.

Self-hosted dev sandboxes with preview URLs (Docker, Go, no K8s)

Key Points

• sandboxed provides isolated, self-hosted dev sandboxes with AI agents and live preview URLs.
• The stack uses Go, Docker, Traefik, and SQLite, and explicitly avoids Kubernetes.
• Idle sandboxes stop to save memory and can wake on request while preserving files on disk.

A Mathematician's Lament – Paul Lockhart (2002) [pdf]

Key Points

• The essay imagines a school system that teaches music through notation and theory rather than actual music-making.
• Students are shown doing technical written exercises from a young age, with pressure intensifying through testing and admissions requirements.
• The analogy is used to show how institutional instruction can separate a subject from its creative and experiential core.

Meteor Explodes over Massachusetts

Key Points

• NASA updated the meteor's measurements to about five feet wide, 5.6 metric tons, and 42,000 mph at atmospheric entry.
• The object broke apart over Massachusetts with energy equivalent to 230 tons of TNT and dropped meteorites into Cape Cod Bay.
• Officials and experts said recovery of fragments is unlikely, and the Coast Guard does not plan a retrieval mission.

Journey to JPEG XL: open-source experiments shaped the future of image coding

Key Points

• JPEG XL was preceded by years of experiments in WebP Lossless, Brotli, Butteraugli, Guetzli, Brunsli, and PIK.
• The work shifted from traditional compression metrics to perceptual modeling using Butteraugli and the XYB color space.
• PIK’s standardization path and low-bitrate requirements led to the VarDCT architecture at the core of JPEG XL.

Patching my guitar amp's firmware

Key Points

• The author identified UART and JTAG headers in the Yamaha THR10c service manual and used them as a starting point for reverse engineering.
• The project’s main goal is to dump and reflash the amplifier firmware with custom modifications.
• The intended firmware changes focus on speaker simulation control and keeping the internal speaker active with headphones connected.

The Ü Programming Language

Key Points

• Ü is presented as a statically typed compiled language focused on safety, reliability, and performance.
• Its compiler uses LLVM, and the project includes tooling such as a standard library, build system, and language server.
• The article lists supported operating systems and architectures, with experimental support noted for OS X on AArch64.

The ways we contain Claude across products

Key Points

• Anthropic says growing Claude deployment depends on limiting blast radius as access and capabilities expand.
• Manual approval in Claude Code showed signs of approval fatigue, with users approving roughly 93% of prompts.
• The company emphasizes containment controls such as sandboxes, VMs, filesystem boundaries, and egress restrictions across its agent products.

I built a vulnerable app and spent $1,500 seeing if LLMs could hack it

Key Points

• The article tests whether LLMs can exploit a Firebase-based access control flaw in a deliberately vulnerable mobile app.
• The intended exploit used exposed Firebase configuration in the app to access Firestore data directly, bypassing the hardened API.
• Among completed 10-run tests, gpt-5.5 had the highest reported solve rate at 7/10, while several other models scored 0/10.

Mobile won the platform war on distribution, not capability

Key Points

• The article says mobile won through app-store distribution control, not superior capability alone.
• It argues modern web apps can now match many formerly native-only mobile features.
• Electron is presented as evidence that open update channels can outweigh runtime differences.

Tony Gilroy Accepts Award for Andor: "Fuck the Empire "

Key Points

• Tony Gilroy said *Andor* was built around themes of fascism, authoritarianism, and resistance.
• Gilroy used his Peabody Award acceptance speech to connect the show’s ideas to real-world civic and political concerns.
• On Peabody’s podcast, he said the show’s current relevance was not intentional prediction but reflects recurring historical patterns.

"They're made out of weights"

Key Points

• The article portrays AI models as systems made entirely of numerical weights without separate language or reasoning modules.
• It explains text generation as repeated next-token prediction produced through matrix multiplication across many layers.
• It presents knowledge and behavioral features as distributed throughout the model rather than stored in explicit internal databases.

Algorithmic Theming Engines

Key Points

• The article says web contrast failures remain common despite years of tooling and JavaScript solutions.
• `contrast-color()` is presented as a native CSS function that returns black or white for a given input color before paint.
• The article distinguishes current Level 5 behavior from possible future Level 6 enhancements and notes that older `color-contrast()` syntax is no longer valid.

U.S. to Dismantle System Tracking Atlantic Currents That Are at Risk of Collapse

Key Points

• The NSF said it will remove all in-water Ocean Observatories Initiative infrastructure over the next 15 months.
• The monitoring network has supplied data used to study ocean conditions, marine life, and the AMOC current system.
• Scientists and some lawmakers say ending long-term monitoring will reduce visibility into climate-related ocean risks.

Show HN: Bio Glyph – Turn Your Face into a One-Line Drawing

Key Points

• Bio Glyph is a Show HN tool for converting faces into one-line drawings.
• The generated portrait is created using one continuous line.
• The result is positioned as a personalized 'bio signature.'

CP/M-86 & MS-DOS Cross Development Environment

Key Points

• A cross-development environment is described for CP/M-86, with DOS tools also usable for building DOS programs.
• The project combines legacy compilers, assemblers, linkers, and emulators to run old development workflows on modern systems.
• The article documents source locations, licensing considerations, and wrapper scripts for direct tool access.

American capitalism has taken an apocalyptic turn

Key Points

• The article says apocalyptic thinking now permeates American business and financial markets.
• It uses Charles Mackay’s 1841 book as a framework for understanding present-day capitalism.
• It argues that Mackay’s chapter on end-of-world fears is more relevant today than his famous bubble narratives.

DNS Is for People – Not for IT Infrastructure

Key Points

• The article argues DNS is valuable for public services but may be unnecessary for internal infrastructure.
• It says DNS can increase outage blast radius because it is often a critical-path dependency.
• It proposes direct IP configuration, /etc/hosts, and configuration management tools as internal alternatives.

When does fragmentation occur in the CUDA caching allocator?

Key Points

• PyTorch’s CUDA caching allocator can fragment memory, causing allocation failures despite sufficient total free space.
• The allocator works by splitting and merging blocks inside segments, and allocation order determines whether memory can be recombined.
• Without expandable segments, each `cudaMalloc` creates an isolated segment, and free blocks across segments cannot merge.

Dumbphone 2

Key Points

• dumb.co says it was founded in Washington, DC in 2025 after the Month Offline challenge.
• Dumbphone 2 is positioned as a companion device that syncs with a smartphone.
• The device includes maps, music, Uber, and optional messaging access.

Life saving / first aid posters

Key Points

• The writer is looking for sources of first aid posters.
• They were prompted by seeing a first aid poster on someone’s fridge.
• Life Saving First Aid posters are given as an example of the desired type of resource.