1. The First Social Network: In rural Argentina residents send messages w AM radio (www.newyorker.com)

In rural Argentina, isolated residents exchange messages over AM radio.

Residents in remote areas of Argentina are using AM radio to communicate with each other, creating a unique social network that bridges the gap caused by isolation. This grassroots approach highlights the innovative ways communities adapt to stay connected.

2. C++26 Contracts: Introduction to Preconditions and Postconditions (www.cppstories.com)

In the article about Standard Library hardening, we looked at checks for invalid Standard Library container access and other broken preconditions. I mentioned that those requirements are expressed in terms of "contracts". But what about our code?
In this post, we’ll explore contracts from C++26. We’ll start with a simple cassert, move the requirement into the function itself, and see how to check results.

Learn how C++26 introduces contracts that help enforce preconditions and postconditions within your code. The article breaks down the concept with practical examples, showing how to implement these checks directly in your functions.

3. Show HN: Indigene – Native plants for where you stand (indigene.app)

Stand in a spot, and find native plants that will actually thrive there, ranked by what they do for the local ecosystem.

A new tool aims to simplify the process of identifying and utilizing native plants for local ecosystems, helping users enhance their yards while supporting wildlife. After a personal journey through gardening in different climates, the creator shares their experience and the need for a more efficient resource.

7. Show HN: Proa – a Rust web framework with fast SSR and multi-target rendering (proa.so)

A batteries-included Rust web framework built around a new programming model for composable, multi-target rendering.

Proa is a new web framework built with Rust, offering fast server-side rendering and support for multiple rendering targets. Check out the accompanying videos and benchmarks to see how it performs against other frameworks.

8. The engineering that allows articulated buses to bend (www.theautopian.com)

The humble articulated bus gets countless people to work every single day. Under the friendly looks is incredible engineering in plain sight.

Articulated buses are more than just a convenient mode of transportation; their design incorporates impressive engineering that enables them to navigate city streets effectively. Discover how these buses combine functionality with sophisticated mechanics to serve commuters daily.

11. Prompt injection in HTTP headers: what 217M web responses show (www.signalscorps.com)

Our Common Crawl scan found 7,959 sites sending HTTP headers aimed at AI agents, including 30 injection attempts. See what they say and how to defend agents.

A recent scan of 217 million web responses revealed nearly 8,000 sites using HTTP headers to target AI agents, with documented injection attempts. Learn about the specific tactics used and strategies for protecting AI systems from these vulnerabilities.

13. Show HN: Ito – Build Terminal UIs in Lua (uji.sh)

Create and try terminal interfaces with Lua.

Two Neovim enthusiasts have developed a tool that allows users to create customizable terminal UIs using Lua, aiming for both simplicity and performance. If you’re looking to enhance your terminal experience, this project offers a fresh and efficient alternative to existing solutions.

14. The 8-mile hole in a Hawaii national park that no one can explain (www.sfgate.com)

"It's very large, and very deep, and I wouldn't go alone."

A mysterious 8-mile deep hole in a Hawaii national park has baffled experts, raising questions about its origins and safety. Discover what makes this enigmatic feature so intriguing and potentially dangerous.

24. Overdose Offsets: Why Every Bag of Fentanyl I Sell Is Net Life-Positive (morewrong.lol)

I sell fentanyl six days a week under the El at Kensington and Somerset, and every bag I sell is net life-positive. Each bag carries a small but real chance of killing whoever buys it. Each bag also sends $1.80 to the Against Malaria Foundation, which GiveWell estimates saves a child’s life for about $5,500. My customers die at a rate of roughly one per 4,000 bags. Four thousand bags at $1.80 buys nets for 1.3 children. Every death on my corner is offset, with a third of a toddler left over, and I’d like that number in the conversation the next time somebody calls me a murderer out the window of a passing Kia.

A fentanyl dealer at Kensington and Somerset argues that the profits from his sales fund life-saving mosquito nets, effectively offsetting the fatalities caused by his product. This provocative perspective raises ethical questions about harm and responsibility in the drug trade.

27. Game of Life – But Multiplayer, Hypermedia and Python (stario.dev)

One shared Game of Life board, computed once per tick and broadcast to everyone watching.

A multiplayer version of the classic Game of Life allows players to interact with a single board that updates in real-time. This setup uses Python and hypermedia to create a dynamic and engaging experience for all participants.

28. Show HN: Sygal – Convert PDFs, scans and web pages to Markdown, locally (sygal.app)

Sygal converts PDF, Word, Excel, images and web pages into clean Markdown and JSON, locally on your Mac or PC. One-time purchase, no subscription.

Sygal allows users to transform a variety of document formats, including PDFs and images, into Markdown and JSON files directly on their computer. With a one-time purchase and no ongoing subscription fees, it offers a straightforward solution for those needing to convert documents efficiently.

29. The largest eagle hunted unlike any other bird of prey (2021) (www.nhm.ac.uk)

Haast's eagle used its huge talons to topple one of the heaviest birds that ever lived before delivering the killing blow with its beak.

Haast’s eagle, a formidable predator, employed its massive talons to take down some of the largest birds in history, showcasing a unique hunting technique that sets it apart from other raptors. Discover the fascinating details of this extinct eagle’s hunting prowess and its impact on the ecosystem.

30. Show HN: My Terminal Themes Web App

After years of development, a popular terminal themes repository has finally transitioned into a fully-featured web app. Users can now access and customize a variety of terminal themes more conveniently than ever.

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