Ozempic reduced grocery spending by an average of 5.3% in the US

https://news.cornell.edu/sites/default/files/styles/story_thumbnail_lg/public/2025-12/1219_ozempic_tnd.jpg?itok=ONd6v2pM
Americans taking appetite-suppressing drugs like Ozempic and Wegovy reduce household food spending by 5.3% within six months. Lower-income households see the steepest drop, with higher-income households experiencing a drop of over 8%.

The struggle of resizing windows on macOS Tahoe

https://noheger.at/blog/wp-content/uploads/2026/01/clickable-area-1.webp
macOS Tahoe's large corner radius causes usability issues with window resizing due to an unresponsive area near the corner. Users must grab the window outside the corner for reliable resizing, which feels unnatural and error-prone.

Lightpanda migrate DOM implementation to Zig

https://cdn.lightpanda.io/website/assets/images/blog/authors/karl_seguin.png
Lightpanda replaced LibDOM with a custom Zig-based DOM implementation called zigdom, resulting in a more cohesive codebase and easier extension. The new implementation also includes a leaner Node structure, lazy property loading, and V8 snapshot integration for improved performance and startup time.

How to Build Reactive Declarative UI in Vanilla JavaScript

https://jsdev.space/og/reactive-vanilla-js.png
The article demonstrates a reactive, declarative UI flow using vanilla JavaScript, Web APIs, and Proxy-based state tracking without a dedicated UI library. This approach enables declarative behavior, improved clarity, and maintainability, and shows that frameworks are optional for achieving abstraction.

Ai, Japanese chimpanzee who counted and painted dies at 49

https://ichef.bbci.co.uk/news/480/cpsprodpb/5f22/live/067c0170-ef8e-11f0-8faf-09c6d7521940.jpg.webp
Ai, a 49-year-old chimpanzee known for her cognitive skills, died of old age and organ failure at a Japanese institute where she lived since 1977. She was a key subject in the Ai Project, a research program that studied her memory, learning, and creativity.

JRR Tolkien reads from The Hobbit for 30 Minutes (1952)

https://cdn8.openculture.com/2026/01/04220105/Screenshot-2026-01-04-at-10.01.48-PM-1024x603.png
Tolkien reads from The Hobbit in a 1952 recording, offering a unique perspective on his work. The recording is part of a longer session where he also read from The Lord of the Rings.

CLI agents make self-hosting on a home server easier and fun

https://fulghum.io/claude-code.png
The user has successfully self-hosted various services on a cheap mini PC using CLI agents like Claude Code, which made the process easier and enjoyable. They now have 13 services running on the device, including password management, photo storage, and media services, using minimal resources.

Launch a Debugging Terminal into GitHub Actions

https://blog.gripdev.xyz/2026/01/10/actions-terminal-on-failure-for-debugging/memory-usage.png
The user created a free and open-source way to get an interactive web terminal to a GitHub Action when it fails, using a Peer-to-Peer connection with WebRTC and OAuth/OIDC for authentication. The service is hosted on Railway, a cloud platform that only charges for actual CPU and memory usage, and uses a sleeping feature to reduce costs when the service is idle.

39c3: In-house electronics manufacturing from scratch: How hard can it be? [video]

https://static.media.ccc.de/media/congress/2025/1374-151d4fb0-5d25-586b-8063-c7706bbd9094_preview.jpg
They set up an electronics production line in Hamburg, sharing difficulties and solutions to make manufacturing more accessible. They use open-source hardware and software to reclaim ownership of electronics production in Europe.

Show HN: DevicePrint – device fingerprinting without cookies

Hi HN, I built DevicePrint after running into problems with duplicate accounts and unreliable cookies in my own projects. DevicePrint is a lightweight device fingerprinting tool designed for developers. It helps identify devices across sessions without relying on cookies. I'd really appreciate feedback — especially around privacy concerns or edge cases you’ve run into.

Travel Is Not Education

The author argues that staying home and reading about a place is more efficient for learning than traveling. They claim that digital media can provide unbiased information and emotional connections to a place without the negative impacts of tourism.

This game is a single 13 KiB file that runs on Windows, Linux and in the Browser

https://iczelia.net/static/snake/cover.png
User created a Snake game that runs on Windows, Linux, and in the browser from a single source file. The game is around 13 KiB in size and uses compression and packing techniques to achieve cross-platform compatibility.

iCloud Photos Downloader

https://opengraph.githubassets.com/7a93a6268fb5b17d22fc402aa0c4c233d542438008d03b2da0e4540ac72f6905/icloud-photos-downloader/icloud_photos_downloader
iCloud Photo Downloader is a weekly-released tool available for direct download and through package managers. It downloads iCloud photos and supports Live Photos, RAW images, and has an experimental mode.

Conbini Wars – Map of Japanese convenience store ratios

https://tile.openstreetmap.org/6/56/24.png
You analyzed conbini locations in Japan, finding exclusive pockets of territory for top brands. Zooming in on prefectures reveals detailed maps showing territory based on closest conbini brand.

XMPP and Metadata

https://blog.mathieui.net/images/client-network.png
The author gave a talk on XMPP and metadata at the Chaos Communication Congress, discussing data retention and server visibility in XMPP networks. They emphasize the importance of choosing a trusted server and propose solutions to reduce metadata exposure.

Shopify CEO vibe codes an MRI viewer

https://pbs.twimg.com/media/G-aDGIuW4AAwALq.jpg?name=small&format=webp
just this one: This is a USB Stick of my MRI. Find all reports, find all images, use imagemagick to convert them into something useful, and get everything into a structured directory in the ./output folder that's worth retaining. Then, make an index.html that's a full exploration tool for the results. Use /frontend-skills and /generate-image skills if necessary. /frontend-skills you ...

The next two years of software engineering

https://addyosmani.com/assets/images/next-two.jpg
The software industry is at a crossroads due to AI coding advancements, with two contrasting scenarios: AI automating entry-level tasks and junior developer hiring collapsing, or AI unlocking massive demand for developers across various industries. To thrive in this landscape, developers must adapt by becoming versatile, AI-proficient, and skilled in areas like system design, communication, ...

I'm making a game engine based on dynamic signed distance fields (SDFs) [video]

Fossil versus Git

Fossil and Git are both distributed version control systems with similar features, but Fossil has additional capabilities like an integrated wiki, ticketing, and a web UI. Fossil is easier to set up and use, especially for self-hosted projects, and has a smaller footprint than Git.

Uncrossy

https://uncrossy.com/images/banner.png
We use cookies to improve your experience and analyze usage. Essential cookies enable core functionality, while analytics cookies help us understand how you use the game. Privacy questions?

FUSE is All You Need – Giving agents access to anything via filesystems

https://jakobemmerling.de/posts/fuse-is-all-you-need/fuse.svg
Implementing a filesystem in a sandboxed environment for AI agents provides ergonomic tool behavior and reduces tool space. FUSE (Filesystem in Userspace) can be used to expose arbitrary data structures as files, making it easier to integrate with existing platforms.

Perfectly Replicating Coca Cola [video]

Sampling at negative temperature

We're experimenting with LLaMA at a negative temperature to see unusual results. The model generates weird and incomprehensible text, repeating certain tokens like Хронологија and entferne.

Show HN: Shellock, a real-time CLI flag explainer for fish shell

https://opengraph.githubassets.com/eb5c15666ef21e4c30f160b76c287b1cbe667387783b76b19f1c8da52abf00db/ibehnam/shellock
The user used the ./shellock.py tool to explain flags in a command, look up a specific flag, parse a command structure, and clear the cache. The tool also handles commands that require interactive help, such as git commit --help, with a man page fallback.

Insights into Claude Opus 4.5 from Pokémon

https://res.cloudinary.com/lesswrong-2-0/image/upload/f_auto,q_auto/v1/mirroredImages/u6Lacc7wx4yYkBQ3r/npt4hiybshwivkdbescy
Claude Opus 4.5 has made some improvements in navigating Pokémon Red, but still struggles with vision, cognitive bias, and inconsistent memory. It relies heavily on notes and can be slow and inefficient in its decision-making.

Himalayas bare and rocky after reduced winter snowfall, scientists warn

https://ichef.bbci.co.uk/news/480/cpsprodpb/e0ca/live/31240770-ec7c-11f0-ba9c-c9d74e6fde06.jpg.webp
The Himalayas are experiencing a significant drop in winter snowfall, with most winters in the last five years seeing a decrease compared to the average snowfall between 1980 and 2020. This dwindling snowfall, combined with accelerated glacier melting, poses a major crisis for the region, impacting water supplies, ecosystems, and the lives of hundreds of millions of people.

Ask HN: What are you working on? (January 2026)

The user has been working on several projects including a Spotify recommendation engine, a color palette tool, a Substack for life advice, a solitaire game platform, an iOS camera app, a USCIS form-filling tool, an AI time tracker, and a developer blog aggregator. They are also working on a daily puzzles website and are open to feedback and suggestions on their projects.

Don't fall into the anti-AI hype

The user, a programmer, believes AI has changed the field forever, making it possible to complete large projects with minimal human effort, and now sees AI as a tool to help write better software faster. They suggest embracing AI, testing its tools, and finding ways to multiply one's productivity, rather than resisting its impact, to stay relevant and continue enjoying the fun of programming.

Elo – A data expression language which compiles to JavaScript, Ruby, and SQL

Elo is a pure data language with no reference semantics, designed for non-technical users and safe data handling. It compiles to JavaScript, Ruby, and SQL with a simple syntax and standard library.

Erich von Däniken has died

https://daniken.com/wp-content/uploads/2025/01/01Logo-A.A.S-1024x346.jpg
A researcher spent 70 years studying extraterrestrial visits to Earth, which he believes inspired ancient mythology and religions. He aims to provide conclusive evidence through his work, countering what he sees as scientific and religious humbugs.