I built a light that reacts to radio waves [video]

https://dbushell.com/images/blog/2026/lumo-spam.avif
The user received a newsletter for Lumo despite opting out and Proton Support initially denied it was a Lumo email. The user believes Proton and GitHub are abusing their services by ignoring opt-out requests.

GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers

https://gptzero.me/news/content/images/2026/01/NeurIPS-logo.svg
Gptzero's hallucination check tool uncovered 50 halluzinated citations in papers under review for iclr 2026. these neurips papers have already been accepted, presented live, and effectively published. a submission tsunami fueled by generative ai, paper mills and publication pressure has strained these conferences' review pipelines to the breaking point. the following table shows the ...

Show HN: isometric.nyc – giant isometric pixel art map of NYC

Capital One to acquire Brex for $5.15B

Please enable JS and disable any ad blocker

TI-99/4A: Leaning More on the Firmware

https://bumbershootsoft.wordpress.com/wp-content/uploads/2025/12/ti_final_umbrellas.png?w=625
The user is working on a project to master the TI-99/4A home computer's graphics chip and sound capabilities using the Graphics Programming Language (GPL) and has made progress on adding animated sprites and implementing collision detection. The user has also encountered some challenges and limitations with the GPL and the TI-99/4A's sound system, but has found ways to work around them and ...

Why does SSH send 100 packets per keystroke?

https://eieio.games/images/ssh-sends-100-packets-per-keystroke/probably-not.webp
The user was debugging a high-performance game over ssh and found that stock ssh was sending unnecessary packets to obscure keystroke timing, causing significant overhead. They were able to disable this feature by not advertising the [email protected] extension in the go ssh library, resulting in a 50% drop in CPU usage.

I was banned from Claude for scaffolding a Claude.md file?

https://hugodaniel.com/images/claude_ban.jpg
User was banned from AI platform Claude for using it as a disabled organization to automate tasks, which triggered security measures. User received a credit note and is reframing their project to avoid similar issues in the future.

Replacing Protobuf with Rust to go 5 times faster

https://pgdog.dev/assets/images/pg_query_parse_protobuf.png
PgDog is a proxy for scaling PostgreSQL. Under the hood, we use libpg_query to parse and understand SQL queries. Since PgDog is written in Rust, we use its Rust bindings to interface with the core C library. Those bindings use Protobuf (de)serialization to work uniformly across different programming languages, e.g., the popular Ruby pg_query gem. Protobuf is fast, but not using Protobuf is ...

Qwen3-TTS family is now open sourced: Voice design, clone, and generation

http://qianwen-res.oss-accelerate.aliyuncs.com/Qwen3-TTS-0115/archi.png#center
Qwen3-tts is a series of powerful speech generation capabilities developed by. it offers comprehensive support for voice clone, voice design, and natural language-based voice control. the base model capable of 3-second rapid voice-clone from user audio input; can be used for fine-tuning (ft) other models.,: "i don’t even know why... i just felt" ''

Project Mercury and the Sofar Bomb

https://substackcdn.com/image/fetch/$s_!MyXb!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F881140de-3a7b-437c-9ded-b808aeef654c_1600x1139.jpeg
The Quantum Cat is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber. Project Mercury was supposed to be fast, and it was supposed to be simple. After all, Sputnik had made it starkly clear the Soviets were ahead, and America feared falling even further behind. The newly created NASA quickly struck back with Explorer 1, ...

Scaling PostgreSQL to power 800M ChatGPT users

https://images.ctfassets.net/kftzwdyauwt9/5dECJjynPkxFF2XABuh3bt/3b5562e1f879fd0afd2deffe9cf1e142/OAI_The_Vicious_Cycle_Under_Load__Light_Desktop_.svg?w=3840&q=90
OpenAI scaled PostgreSQL to handle millions of queries per second for 800 million users through rigorous optimizations and solid engineering, enabling the system to support massive global traffic with a single primary instance and nearly 50 read replicas. Despite challenges with write-heavy workloads, the team implemented various solutions to mitigate limitations, including migrating ...

Douglas Adams on the English–American cultural divide over "heroes"

A user on Slashdot questioned Douglas Adams about the perceived nihilism in Hitchhiker's Guide to the Galaxy, specifically Arthur Dent's character. The user suggested a cultural divide between England and the US in viewing failure as a heroic trait.

Bugs Apple Loves

Users Affected × Frequency × Time Per Incident How many Apple users hit this bug, how often, and how long they suffer each time.

A gaming success story: how Warhammer became one of Britain's biggest companies

https://i.guim.co.uk/img/media/d7afe2076b11fbe5a925edf83835a515efc3e7be/0_0_960_960/master/960.jpg?width=445&dpr=1&s=none&crop=none
Games Workshop, the parent company of Warhammer, has become a £6bn business through its enduring appeal to gamers and hobbyists. The company's secret to success lies in its focus on creativity, community, and expert staff, making it an experience rather than just a shop.

Improving the usability of C libraries in Swift

https://www.swift.org/apple-touch-icon-180x180.png
Swift provides direct interoperability with C libraries, allowing developers to use existing C libraries from Swift code without rewriting them. By using Swift annotations and API notes, developers can improve the safety and ergonomics of C libraries in Swift, making them feel more native to the language.

Turso is an in-process SQL database, compatible with SQLite

https://camo.githubusercontent.com/d199d63b18a5a9120d300568d993c534e2cbefb6e7bbfc4b45e0121d080f4f6e/68747470733a2f2f636f6e747269622e726f636b732f696d6167653f7265706f3d747572736f64617461626173652f747572736f
Turso Database is a Rust-based evolution of SQLite with native async support and features like vector search. It's still in beta and has a bug bounty for data corruption issues.

Your app subscription is now my weekend project

https://rselbach.com/your-sub-is-now-my-weekend-project/image-2026-01-18T21-04-02Z.png
User created several apps using vibecoding, replacing paid tools like Wispr Flow, Loom, and Typora. This shift suggests a change in the industry, making standalone apps less viable as separate products.

Writing First, Tooling Second

Create a simple website with plain HTML to publish your writing without worrying about tooling. Once you have content, you can add tooling to make your writing process more enjoyable.

Stunnel

https://www.stunnel.org/img/tunnel.jpg
Stunnel is a proxy that adds TLS encryption to existing clients and servers without code changes, using OpenSSL for cryptography. It's free software with commercial support available, distributed under GNU GPL with OpenSSL exception.

Why medieval city-builder video games are historically inaccurate (2020)

https://www.leidenmedievalistsblog.nl/images/uploads/_fulllandscape/PAK.GameBlog1.png
Medieval city builders often deviate from historical accuracy, featuring linear growth and unrealistic scenarios, but incorporating realistic elements like flood valleys and tithe collection could enhance realism. A more historically accurate game would involve planning settlements, managing resources, and dealing with threats like disease, war, and social unrest.

'Askers' vs. 'Guessers' (2010)

https://cdn.theatlantic.com/thumbor/71nwZzXEwXDgoBuxDxb2aPjtPGs=/420x560/media/img/issues/2026/01/12/0226_Cover/original.png
The person asking to stay with you for two weeks has not committed a gross violation of etiquette. This situation falls into the Ask Culture category, where it's acceptable to ask for help or accommodations.

Show HN: Txt2plotter – True centerline vectors from Flux.2 for pen plotters

https://raw.githubusercontent.com/malvarezcastillo/txt2plotter/main/examples/plotted_overview.jpg
User clones a repository, sets up a virtual environment, and installs dependencies to run a text-to-image generator. The user then runs the generator with various options, including custom dimensions, multiple variations, and reproducible generation.

CSS Optical Illusions

https://alvaromontoro.com/images/blog/optical-illusions-cover.webp
The article discusses various optical illusions created using CSS, including the Poggendorff illusion, Münsterberg Poggendorff Arch, and other effects that trick the brain into seeing different colors, shapes, and movements. These illusions use techniques such as gradients, pseudo-elements, and animations to create the impression of movement, depth, and color, often with surprising and ...

Launch HN: Constellation Space (YC W26) – AI for satellite mission assurance

Constellation Space built an AI system that predicts satellite link failures with 90% accuracy 3-5 minutes in advance by analyzing telemetry data and weather conditions. The system uses physics-based models and machine learning to scale with the growing number of satellites and is currently being tested with defense and commercial partners.

Show HN: Text-to-video model from scratch (2 brothers, 2 years, 2B params)

https://cdn-avatars.huggingface.co/v1/production/uploads/61003b352a9d56b5372ece0a/QsQ6IvGoaxq3RVRsMnIHr.png
360p or 720p, 2-5 seconds, Apache 2.0

Why are there so many CPU bugs nowadays

https://media.mas.to/cache/preview_cards/images/082/487/603/original/ae8e6087d758d2a4.png
In the early days of personal computing CPU bugs were so rare as to be newsworthy. The infamous Pentium FDIV bug is remembered by many, and even earlier CPUs had their own issues (the 6502 comes to mind). Nowadays they've become so common that I encounter them routinely while triaging crash reports sent from Firefox users. Given the nature of CPUs you might wonder how these bugs arise, ...

In Europe, wind and solar overtake fossil fuels

https://yale-threesixty.transforms.svdcdn.com/production/Beeskow-Solar_Pexels.jpg?w=400&auto=compress%2Cformat&fit=clip&dm=1769079918&s=3c6b60c6321fd63f129208a6b8c09d33
Wind and solar power surpassed fossil fuels in the E.U. last year, with solar growing faster than any other source of electricity. Renewables now provide nearly half of E.U. power, with solar alone supplying over 20 percent in several countries.

'Active' sitting is better for brain health: review of studies

https://www.sciencealert.com/images/2026/01/ManDoingAUniqueSitOnCouch-642x361.jpg
Researchers found that active sitting, like reading, has positive associations with cognitive health, while passive sitting, like watching TV, is linked to negative outcomes. Engaging in mentally stimulating activities while sitting may help reduce dementia risk and support long-term brain health.

Recent discoveries on the acquisition of the highest levels of human performance