Let's Encrypt has been down most of today

https://image.status.io/ZsUlrVAwD16p.png
We have taken measures to stabilize API performance while we investigate networking issues between our two high assurance data centers. Let's Encrypt's production API is experiencing degraded performance. Clients may encounter 400 and 500 error responses. We are actively investigating the issue.

To study how chips work, MIT researchers built their own operating system

https://news.mit.edu/sites/default/files/images/202605/mit-csail-fractal.jpg
Researchers at MIT developed Fractal, a new kernel that gives a cleaner view of processor behavior, and has already found previously unknown behavior in Apple's M1. Fractal treats hardware as the object of study, allowing researchers to run experiments with minimal background noise and gain a deeper understanding of processor behavior.

Ice Water Drowning Survival After 147-Minute Submersion and Hypothermic Arrest

A young boy survived 147-minute submersion in ice water with a body temperature of 7 °C. He was resuscitated with ECMO and made a full recovery.

How Japan's railways stayed one while splitting apart

https://arun.is/.netlify/images?url=_astro%2Fjr_system.CO5gj7O1.jpg&w=1440&h=1440&q=100&dpl=6a34949d9b51050008bb61bd
The JR mark was designed by Yōji Yamamoto in 1987 for Japan's railway companies, with a simple yet effective design that has remained unchanged for nearly 40 years. Yamamoto's design philosophy emphasized truth, reality, and honesty, resulting in a mark that has become synonymous with Japan's railways.

Zero-Touch OAuth for MCP

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The Enterprise-Managed Authorization extension is now stable, allowing organizations to centrally manage authorization for MCP servers and end-users to access all connected servers through a single login. This extension addresses a major pain point in enterprise environments by providing a zero-touch setup and centralized policy control.

I found 10k GitHub repositories distributing Trojan malware

The user found 10,000 GitHub repositories distributing Trojan malware by analyzing commit patterns and using a script to filter repositories. The script found 10,000 repositories that matched the pattern of being updated every few hours with a link to a zip archive in the readme file, but the user believes there should be many more due to GitHub's large repository count.

Datasette Apps: Host custom HTML applications inside Datasette

https://static.simonwillison.net/static/2026/datasette-timeline-app.jpg
Datasette Apps are self-contained HTML+JavaScript applications that run in a sandboxed iframe, allowing users to build custom interfaces and visualizations for their data. The plugin uses a combination of sandboxing and Content Security Policy to ensure secure execution of untrusted code.

Building a robotics research setup that lives next to my desk

https://dfdxlabs.com/research/2026/robotics-setup/ufactory-web-processed.png
A researcher is conducting independent robotic manipulation research on a tabletop setup with a single industrial-grade robot arm, two cameras, and teleoperation, aiming to test the hypothesis that a single person can achieve meaningful results with a budget of €10,000. The setup includes a UFACTORY xArm Lite 6 robot arm, Intel RealSense D405 wrist camera, and Logitech C920 webcam, with a ...

Cell-based architecture for resilient payment systems

https://americanexpress.io/_post_assets/cell-based-architecture-for-resilient-payment-systems/img/main.jpg
American Express uses a cell-based architecture to ensure high availability and low latency in its payments ecosystem. This architecture isolates failures, maintains low-latency processing, and scales capacity without expanding the failure domain.

Ubiquiti: Enterprise NAS, Built on ZFS

https://cdn.blog.svc.ui.com/Screenshot_2025_02_17_at_09_09_17_6037e24c3f.png
ENAS offers a private, local storage platform with performance, scalability, and simplicity, eliminating costly licensing and proprietary hardware. It integrates with UniFi for centralized management, secure access, and multi-site backup orchestration without recurring software costs.

CS 6120: Advanced Compilers: The Self-Guided Online Course (2020)

CS 6120 is a PhD-level Cornell CS course on programming language implementation covering universal compilers and research topics. The course involves reading papers and open-source hacking tasks using LLVM and an educational IR.

Zork name origin got an update on Wikipedia

https://www.dpolakovic.space/blogs/pics/zork122.jpeg
User investigated the origin of the word "zork" in the game Zork, initially believing it was a jargon word for unfinished programs. After researching and contacting experts, they found no evidence to support this claim.

Flexport (YC W14) Is Hiring in Indonesia, India, and Thailand

https://images.ctfassets.net/92fo1e671z6m/1FWJPcWf0WDF9EwO927wSR/a10a261bea19a4ed2b385f4a090e8585/Careers_img_header.jpg?w=2106&h=1800&fl=progressive&q=80&fm=jpg&bg=transparent
Flexport aims to revolutionize global logistics with AI, making trade easier and driving real-world impact. The company seeks talented individuals worldwide to join its mission-driven team and help build the future of automated global logistics.

Hospitals and universities repurposing drugs at lower cost

https://www.kcl.ac.uk/newimages/folsm/main-article/bmb/immunotherapy.x188e82a2.png?f=webp
Universities and hospitals are conducting late-stage clinical trials with lower costs, repurposing existing drugs for new uses. This "hidden" research system offers affordable treatments with huge potential, operating outside of the patent system.
https://www.thatprivacyguy.com/blog/assets/2026-06-18-001.png
A customer club's marketing arrangement was found to be unlawful due to forced consent. The company was fined NOK 20 million for violating GDPR rules on consent, transparency, and data processing.

.gitignore Isn't the only way to ignore files in Git

https://nelson.cloud/.gitignore-isnt-the-only-way-to-ignore-files-in-git/og.png
Git has three levels of file ignoring: .gitignore, .git/info/exclude, and ~/.config/git/ignore. These files allow ignoring files at repository, per-repo, and machine levels respectively.

Horizons JPL Solar System Data Demo and NASA DSN Updates: Datastar, Common Lisp

Click on a planet to see JPL Horizons details | NASA Deep Space Network logs update in the background (all antenas) Demo for Datastar + Common Lisp / by fsm ΛↃ lambda combine

Show HN: Are You in the Weights?

https://www.intheweights.com/assets/placeholder-pfp-Cc0nAucJ.png
The weights are the billions of numbers forming an AI's brain. Type a name and see how strongly the leading AI models recognize it. Are you in the weights?

Swiss parliament lifts ban on new nuclear power plants

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The Federal Palace in Bern is bustling with activity as the National Council and Council of States debate various important issues during their summer session. The agenda includes the 13th AHV pension, the armed forces, federal finances, and the construction of new nuclear power plants.

Launch HN: TesterArmy (YC P26) – Agents that test web and mobile apps

https://tester.army/_next/image?url=%2Fassets%2Flanding%2Fdemo-camo-bg.webp&w=3840&q=75&dpl=dpl_7kdk5n5TfUZPragdHr5tHSN3hSSq
TesterArmy is a service that uses AI to test websites and mobile apps by navigating pages and interacting with UI like a human. It integrates with GitHub and other pipelines for automatic testing and reporting.

DuckDB Internals: Why Is DuckDB Fast? (Part 1)

https://storage.ghost.io/c/eb/37/eb37738a-77f2-4eaf-9de2-43f9b30fffd5/content/images/2026/04/image-2.png
DuckDB has gone from a research project at CWI Amsterdam in 2019 to one of the most widely adopted databases of the past decade. The list of places it shows up is long: notebooks, ETL pipelines, dashboards, CI test runners, embedded analytics inside SaaS products, even an iPhone running TPC-H at scale factor 100. Companies have started building real products around it. MotherDuck is wrapping ...

The Token Compression Illusion: Why I'm Skeptical of RTK

The author is skeptical of RTK's long-term viability due to its misleading savings statistic and critical structural flaws. RTK's optimization may lead to silent failures and decreased task accuracy, making it an operational risk.

W Social, public institutions and the theater of European digital sovereignty

https://blog.elenarossini.com/content/images/size/w1075h650/2026/06/WSocial-followup-cover-v4.jpg
The user is fascinated by W Social, a microblogging platform that claims to be Europe's alternative to X, but has discrepancies between its public image and reality. The European Commission's migration of its ATproto accounts to W Social is concerning due to W Social's lack of transparency and potential reliance on Bluesky's infrastructure.

Noam Shazeer Joins OpenAI

https://pbs.twimg.com/profile_images/1991028016471027714/bHMv9VwR_200x200.jpg
I’m excited to share that I’ll be joining OpenAI and look forward to working with the exceptional team there. It was a difficult decision to move on. I’m incredibly proud of the amazing team at Google and everything we’ve built together. It has been an honor and a pleasure to work with all of you.

If your product is Great, it doesn't need to be Good (2010)

The author argues that successful products focus on a few key features, ignoring others, to create a simple and compelling experience. This approach is seen in products like the original iPod and Gmail.

Show HN: Talos – Open-source WASM interpreter for Lean

https://opengraph.githubassets.com/b7b8c3283c2973a61fc8dc2b74d38a263249fe0503f0fe573c1fb12d87ecf9d8/cajal-technologies/talos
Talos is a Lean 4 WebAssembly interpreter that enforces rules with a single codebase for evaluation and proof. It aims for full Wasm coverage with a focus on non-optimized source code semantics.

Modos Color Monitor Pushes E-Paper Displays Further

https://spectrum.ieee.org/media-library/close-up-of-a-hand-using-a-stylus-on-an-e-paper-pc-monitor.jpg?id=66946969&width=1200&height=900
Modos Flow is a 13.3-inch color e-paper monitor with higher resolution and touch input, improving on the Paper Monitor Dev Kit. The Flow's crowdfunding campaign is live on Crowd Supply, with cofounders discussing engineering and lessons learned from their crowdfunding journey.

How Alberta Eradicated Rats

https://worksinprogress.co/.netlify/images?url=https%3A%2F%2Fassets.worksinprogress.co%2Fwp-content%2Fuploads%2F2026%2F05%2Fcover_issue_24_900w.webp&w=500&h=587&fit=contain
Alberta, a Canadian province, has been rat-free for over 70 years despite being surrounded by infested areas. Its success is due to a proactive rat control program that began in the 1950s, focusing on a narrow border zone and using a combination of surveillance, education, and targeted poisoning.

Show HN: Gerrymandle - Daily puzzle game where you redraw electoral districts

https://gerrymandle.cc/gerrymandle/tutorial/gerrymander_yellow_blue.svg
I will draw district lines to favor the yellow party. I will use gerrymandering techniques like packing and cracking to concentrate yellow voters in a few districts and split opponents across multiple districts.

Migrating from GNU Stow to Chezmoi

https://blob.rednafi.com/static/images/home/cover-84b7bd64087e.png
The user previously used GNU stow to manage their dotfiles but switched to chezmoi due to symlinking issues. Chezmoi keeps a source directory with copies of live files and applies changes to the home directory.