Watch Los Angeles get built, one building at a time (1880–2026)

Every building in the City of Los Angeles, one box per structure, colored by the decade it was built. Watch the city fill in from 1880 to today.

Finding a bug in Dummit and Foote's Abstract Algebra

The author struggled with a proof exercise in Dummit and Foote's abstract algebra textbook, which claimed that a function is injective if and only if it has a left inverse. The author found this statement to be false after testing it with an empty set A and a singleton set B.

WeatherNext 3

https://deepmind.google/static/images/fallback/video_poster_fallback_light.57b61d57842a.jpg
WeatherNext 3 can predict all surface variables – including weather station targeted temperature and humidity at 5km resolution, and other surface variables like wind at 10km. This results in significantly more accurate forecasts – even in locations the model hasn’t encountered in training.

Macbeth and His Problems

https://porticoquarterly.com/wp-content/uploads/2026/06/Macbeth_2015-1200x630.jpg
If you’ve never seen a bad production of Macbeth, you’ve probably never seen a production of Macbeth. Famously cursed, the play has inspired perhaps the gravest superstition in the superstitious demimonde of Western theater: Every actor, director, stage manager, set designer, tech, and seamstress knows that one must never speak the name of Shakespeare’s Scottish play inside a theater. Partly ...

Methods for Random Gradients (2024)

https://storage.ghost.io/c/e5/51/e5518248-64c6-46dd-941d-a7fd73d59c60/content/images/2024/11/20241106-074836.png
The author experimented with generating random gradient images, including using heightmaps and Scalable Vector Graphics (SVG), for OpenAI's visual identity. They used AI image generation models like DALL·E 2 to create textural gradient images with various styles and effects.

Simple Is Not Small

https://jyn.dev/assets/rope.png
The author discusses the importance of simplicity in programming, contrasting it with coupling and complexity. They argue that small programs can be coupled, while simple ones are decoupled and easy to maintain.

Decoding the NEC V20 Microcode

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjskHCopDIB5dU1q0D0lGEI6lqkA6e9U01Bym_U9Bv1WKKfrLJtFfe33H2Y-Ewu_AKW7ToWmFMBLHQtvAzR1kbQWV-bOVJej0EPqefkGYf0LRRw8rzQbed490tfEjo85vWnxPhfffnec9fraZJku7ULbAj-jIB0gBksBozA8Jxhkc_L4a1zmB7dFp18mEgT/w640-h558/v20_die_shot_large_01.jpg
A user has successfully decoded the NEC V20 microcode, allowing for accurate emulation of the CPU. The decoding process involved analyzing die photography and using machine learning to identify bits in a 29,928-bit ROM array.

Caltech Mathathon – first hackathon ever devoted to research level mathematics

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A complex structure was shown in a six-sphere, raising questions about AI's role in math. A global competition will be held to solve open conjectures and build new theories using frontier models, with prizes awarded for promising results.

The Dataflow Model Revisited

The Dataflow Model paper proposed a unified model for batch and streaming engines, emphasizing event time and strong consistency. Its core foundations have aged well, but the analytical interface was flawed in its implementation.

bzip3

https://camo.githubusercontent.com/e60efbfdc1e69aaf158f5c64e16ac70b7c91025d7831c69832c32a1cb499f657/68747470733a2f2f7265706f6c6f67792e6f72672f62616467652f766572746963616c2d616c6c7265706f732f627a6970332e7376673f636f6c756d6e733d33
Bzip3 is a high-performance compression library with higher ratios and better performance, built on order-0 context mixing entropy coder and Burrows-Wheeler transform. It's licensed under LGPLv3 only, with contributions from Ilya Grebnov and others.

Icy Moons Are Ocean Worlds

216M Spy TVs – The LG Smart TV Problem [video]

Decapitating a MacBook (2025)

https://mm-dev.rocks/images/decapitating-macbook/headless-mac.jpg
The author purchased a used M1 Mac Mini to develop software for the Apple ecosystem, despite not being an Apple fan. The device's power management and display removal were challenging but ultimately successful with custom scripts and modifications.

Trusting-Trust Attack against an Entire Linux Distribution

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
A trusting-trust attack can be performed on GNU strip, a build utility, by tampering with its binary seed in the NixOS Linux distribution. This allows for propagation of malicious code into subsequent builds and final standard environment.

Academia as a d-index measuring contest

Scientists observe Einstein's gravity in the quantum world

Keep Our Servers Running

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The Internet Archive aims to provide universal access to human knowledge, and its infrastructure relies on donations. Monthly gifts help maintain servers, ensuring books are readable and websites are accessible for future generations.

Replaceable but Employed: Automation and the Meaning of Work

https://www.nber.org/sites/default/files/styles/promo/public/2026-07/2026%20Martin%20Feldstein.png?itok=1jwXEODI
The author thanks Refine.ink, ChatGPT and Claude Fable for research assistance and acknowledges SSHRC funding. The views expressed are the author's own, not those of the National Bureau of Economic Research or affiliated parties.

My practical approach to surfing the web safely

https://molily.de/img/firefox-ai.webp
The author describes their approach to safe and private browsing, using a restricted Firefox browser with uBlock Origin extensions to block ads, trackers, and cookies. They also use alternative browsers like Vivaldi and Ungoogled Chromium for specific tasks or sites that don't work properly in Firefox.

Whistle Synth Mac App

https://www.jefftk.com/whistle-synth-in-app-store.png
A new synthesizer app is available in the Mac App Store, using whistling to control it and featuring lower latency and more voices. The app was developed with AI assistance, allowing for a more versatile and user-friendly experience.

This Month in Ladybird – August 2026

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Ladybird browser has improved with new features like video playback on Twitch, JavaScript debugging in DevTools, and downloads that can be paused and resumed. The engine performance has also been enhanced with a new style engine, layout caching, and CSS animations running off the main thread.

How to bring up the Linux Kernel on a new platform

Catching Crumbs from the Table (2000)

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The user is on a website that requires a more modern browser for optimal experience. The site is displaying without styles and JavaScript due to the outdated browser.

Live map of public transport in Belgium

https://openbaarvervoerbelgie.be/og.png
Elke bus, tram, metro en trein van De Lijn, STIB-MIVB, TEC en NMBS op één kaart, met realtime vertragingen, haltes en vertrektijden. De kaart wordt geladen… · La carte se charge… · Loading the map…

Schemy Lisp En DOS

SLED is a symbolic Lisp interpreter that runs on DOS and its emulators, with features inspired by Scheme. It has built-in functions, standard library, and special forms for data manipulation and interaction with the system.

Show HN: HomeCat – Design your backyard office

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Keep your project on track. Get code-compliant building plans, material/cut lists, and a guide for any construction project.

Show HN: Wg-admin – web UI for an existing WireGuard host

https://raw.githubusercontent.com/logimaxx/wg-admin/main/docs/screenshots/interface.png
A web-based UI for WireGuard hosts allows editing peers and applying changes without disrupting the existing setup. It sits on top of the configuration, preserving existing keys, routing hooks, and peers.

Bill Gates tries to install MovieMaker (2003)

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Bill Gates expresses frustration with the Windows Usability Systematic degradation, citing difficulties in downloading Moviemaker and other software. He suggests that Microsoft needs to improve its website and download process to make it easier for users.

Rebuilding a 1995 GPS Time Server so I don't get Telstra'd

https://www.jeffgeerling.com/blog/2026/truetime-xl-gps-time-server-restomod/truetime-pi-densitron-lcd-working-time.jpeg
The author has successfully converted a TrueTime XL-AK time server into a stratum 1 NTP time server using a Raspberry Pi 5 and GNSS HAT, providing accurate timing services for VCF Midwest. The setup includes features like PPS handling, temperature control, and display on an LCD screen.

Speculative Decoding in vLLM on AMD GPUs

https://vllm.ai/blog-assets/figures/2026-08-23-speculative-decoding-amd-gpus/figure-method-summary.svg
Speculative decoding in vLLM allows for verifying multiple drafted tokens in a single target-model pass, improving output-token throughput. The method varies across drafting methods and proposal lengths, depending on the model family, draft checkpoint, workload, and acceptance behavior.