Artemis II crew take “spectacular” image of Earth

https://ichef.bbci.co.uk/news/480/cpsprodpb/99c2/live/d50d99f0-2f7a-11f1-b297-95b0a0a8331e.jpg.webp
Nasa's Artemis II crew took high-resolution images of the Earth as they headed to the Moon. The images show the Atlantic Ocean, atmosphere, and auroras, with the Earth appearing upside down.

Tell HN: Anthropic no longer allowing Claude Code subscriptions to use OpenClaw

Anthropic is changing its policy for third-party harnesses, requiring extra usage and a pay-as-you-go option starting April 4. A one-time credit and discounts for pre-purchased extra usage are being offered to ease the transition.

Show HN: TinyOS – A minimalist RTOS for Cortex-M written in C

https://opengraph.githubassets.com/9647b40edbed7efbdb7effae5d8a85d258851a22701d037ad2eec3ddb28717e7/cmc-labo/tinyos-rtos
This is a summary of the provided text in 2 concise English sentences, not exceeding 200 characters.

iNaturalist

https://static.inaturalist.org/wiki_page_attachments/3154-medium.png
iNaturalist is a social network for naturalists! Record your observations of plants and animals, share them with friends and researchers, and learn about the natural world.

Fake Fans

https://substackcdn.com/image/fetch/$s_!yOGu!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fb1d34460-fe78-42fd-9b08-ca235e413f2b_620x422.webp
Chaotic Good is a digital marketing agency that creates virality for musicians by manufacturing fake fan accounts and controlling online discourse. Their tactics aim to shift the burden of promoting artists from the artists themselves to the agency.

What changes when you turn a Linux box into a router

We can turn a Linux system into a router or switch by making 7 changes to the system, including enabling packet forwarding, defining a bridge, and configuring netfilter rules to filter traffic. These changes allow us to create a complete forwarding system, including enabling IP forwarding, defining a bridge, configuring netfilter rules, deploying a DHCP and DNS server, and vending WiFi ...

Show HN: I built a frontpage for personal blogs

https://text.blogosphere.app/og.png
The frontpage of the indie web. Discover the latest posts from independent blogs across the web.

The house is a work of art: Frank Lloyd Wright

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Oracle Files H-1B Visa Petitions Amid Mass Layoffs

https://nationaltoday.com/wp-content/uploads/not-wordpress/2026/04/69cff13a331fe.jpg
Oracle filed 3,126 H-1B visa requests despite laying off thousands of American workers. The company's actions raise concerns about replacing US workers with cheaper foreign labor through the H-1B program.

We replaced RAG with a virtual filesystem for our AI documentation assistant

https://www.mintlify.com/_next/image?url=%2Fimages%2Ffeatured%2Fhow-we-built-a-virtual-filesystem-for-our-assistant.png&w=1920&q=75
The team created a virtual filesystem called ChromaFs to power their documentation assistant, allowing it to explore documentation like a codebase without the need for real sandboxes. ChromaFs uses a Chroma database to provide instant session creation, zero marginal compute cost, and built-in role-based access control, replacing the need for expensive sandboxes.

Go on Embedded Systems and WebAssembly

https://tinygo.org/images/tinygo-logo.png
TinyGo brings Go to embedded systems and the web with a new LLVM-based compiler. It supports over 100 microcontrollers and produces WebAssembly code for web and edge computing.

Charge Robotics (YC S21) Is Hiring Software and Hardware Engineers

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Charge Robotics Jobs

OpenClaw privilege-escalation bug

OpenClaw before 2026.3.28 has a privilege escalation vulnerability in the /pair approve command path. A caller with pairing privileges can exploit this to approve device requests with broader scopes, including admin access.

Extra usage credit for Claude to celebrate usage bundles launch (Pro, Max, Team)

https://downloads.intercomcdn.com/i/o/lupk8zyo/792494/717b10d3ebd874823db64841659b/76f3062d78ebbb04863fb1de3ef9cca0.png
To celebrate the launch of usage bundles, we’re giving every Pro, Max, and Team plan subscriber a one-time extra usage credit equal to your subscription price or as otherwise listed below. You’ve subscribed to a Pro, Max, or Team plan by April 3, 2026 at 9 AM PT This offer doesn’t apply to Enterprise plans or Console accounts. There are no exceptions to these eligibility requirements. This ...

How to Make a Sliding, Self-Locking, and Predator-Proof Chicken Coop Door (2020)

https://www.backyardchickens.com/data/attachments/2229/2229106-c3dac488f4013d120f4c6c7b5e8c1a3e.jpg?hash=w9rEiPQBPR
A secure coop door design uses a vertical sliding door with a self-locking mechanism, eliminating the need for external locking. The door is designed to be easy to build using a jigsaw, drill, and table saw, with a counterweight or spring hinge for smooth operation.

How to Write Unmaintainable Code (1999)

Last updated Thursday, 18-Nov-1999 20:27:28 PDT by Roedy Green ©1997-1999 Canadian Mind Products. In the interests of creating employment opportunities in the Java programming field, I am passing on these tips from the masters on how to write code that is so difficult to maintain, that the people who come after you will take years to make even the simplest changes. Further, if you follow all ...

Iran strikes leave Amazon availability zones "hard down" in Bahrain and Dubai

https://substackcdn.com/image/fetch/$s_!6X95!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F29bf6a18-10a1-409f-90c7-937af2bea02d_2706x1644.png
Amazon's AWS availability zones in Dubai and Bahrain are down due to Iranian strikes and will be unavailable for an extended period. Amazon is advising employees to deprioritize the regions and is helping customers migrate to other locations.

Why are we still using Markdown?

You're frustrated with Markdown's complexity and inconsistencies, particularly with inline HTML and multiple ways to write the same thing. You think a minimal, well-defined markup language with a build system and compile-time hooks could solve many problems.

F-15E jet shot down over Iran

https://i.guim.co.uk/img/media/b3a968d7b868ec4522eec1f7cf3b8635d03c06a8/0_126_901_721/master/901.jpg?width=445&dpr=1&s=none&crop=none
A US F-15E Strike Eagle fighter was shot down over Iran, prompting a US search and rescue effort for its two crew members. One crew member was reportedly rescued in a high-risk operation, with the fate of the second crew member still unclear.

Show HN: Mtproto.zig – High-performance Telegram proxy with DPI evasion

https://opengraph.githubassets.com/f863b85e549c76022b1f72cd21108d2999ee98499b1484a5ec9a9f187a55219c/sleep3r/mtproto.zig
Rejects replayed handshakes outside ±2 min window AND detects ТСПУ Revisor active probes Engineering Notes: For deep technical details, cryptography internals, systemd hardening, and benchmarks, see GEMINI.md (Engineering Notes). # Clone git clone https://github.com/sleep3r/mtproto.zig.git cd mtproto.zig # Build (debug) make build # Build (optimized for production) make release # Run with ...

Age verification on Systemd and Flatpak

Apple is rolling out age verification for UK iPhone and iPad users to access certain services, despite UK law not compelling operating systems to do so. This move may be a test bed for future compliance in California by 2027, with potential implications for other operating systems.

A Taxonomy of Interiors

https://i0.wp.com/misfitsarchitecture.com/wp-content/uploads/2026/03/unnamed.png?fit=512%2C310&ssl=1
The author is exploring the concept of interior design, questioning the urgency to blur the distinction between inside and outside, and examining how objects relate to space. They propose a framework for understanding the types of aesthetic relationships between objects and spaces.

Async Python Is Secretly Deterministic

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To make async Python workflows deterministic, we need to understand the event loop's single-threaded execution model and how tasks are scheduled in FIFO order. By incrementing step IDs before the first await in each step, we can deterministically order steps and ensure consistent execution order during recovery.

Bourbon waste could provide next-gen supercapacitor components

https://spectrum.ieee.org/media-library/an-adult-man-in-safety-goggles-and-gloves-holding-up-a-beaker-filled-with-opaque-bourbon-waste.jpg?id=65400140&width=1200&height=900
Kentucky’s bourbon industry produces vast quantities of waste grain that is costly to transport and process. Researchers have now found a way to turn that by-product into high-performance energy-storage materials with potential applications in electric vehicles and large-scale grid storage. More than 95 percent of all bourbon whiskey is made in Kentucky. For each barrel of bourbon, the ...

Build your own Dial-up ISP with a Raspberry Pi

https://www.jeffgeerling.com/blog/2026/build-your-own-dial-up-isp-with-a-raspberry-pi/pi-isp-ibook-hero.jpeg
The user set up a local dial-up ISP using a Raspberry Pi and an old modem to emulate a dial-up connection on an iBook G3 from 1999. They used a phone line simulator and a USB modem to establish a connection and browsed the internet using Macproxy Classic.

Run Linux containers on Android, no root required

https://opengraph.githubassets.com/bc8e9406d8e1959746af2a1397eb9ea378ce486aa05af258b42ff679780080a4/ExTV/Podroid
Podroid spins up a lightweight Alpine Linux VM on your phone using QEMU and gives you a fully working Podman container runtime with a built-in serial terminal. Wait for boot (~20 s) — progress is shown on screen and in the notification podman run --rm alpine echo hello podman run --rm -it alpine sh podman run -d -p 8080:80 nginx The terminal is powered by Termux's TerminalView with full ...

Automatic Textbook Formalization

https://opengraph.githubassets.com/50be3918516831420168745068f834f2de98dca108e2f358239fb2d4985cd48b/facebookresearch/repoprover
RepoProver is a multi-agent scaffold for formalizing math textbooks in Lean, using LLM agents for translation, proof, and review. It uses a shared git repository and lightweight issue tracker for coordination.

DCJ11Hack+ – DEC PDP/11 based homebrew computer

https://codeberg.org/TechPaula/DCJ11HackPlus/media/branch/main/images/DCJ11_CPU.png?raw=true
You're sharing a DCJ11 based board with a backplane for adding/removing functionality. It includes a main CPU board, RAM, ROM, and text display board with schematics and PCB files available.

April 2026 TLDR Setup for Ollama and Gemma 4 26B on a Mac mini

SSH certificates: the better SSH experience

SSH certificates provide a better and more seamless SSH experience by eliminating the need for Trust on First Use (TOFU) and allowing for short-lived keys, forced-commands, and automated key management. An SSH CA can be used to sign host keys and user keys, making it easier to manage SSH connections and eliminating the need for manual key deployment and TOFU.