Bring Bathroom Doors Back to Hotels

https://i0.wp.com/bringbackdoors.com/wp-content/uploads/2025/10/cropped-Untitled-design-3.png?fit=512%2C512&ssl=1
User created a website to help travelers find hotels with bathroom doors, after experiencing doorless rooms. The website lists hotels with doors that close and are not made of glass, and allows users to submit doorless hotels for public shaming.

Voyager 1 is about to reach one light-day from earth

https://scienceclock.com/wp-content/uploads/2025/11/Pale_Blue_Dot.png
Voyager 1 is about to reach 16.1 billion miles away from Earth, taking 24 hours for a radio signal to reach it. It's the most distant human-made object, traveling at 11 miles per second since 1977 and sending data until the 2030s.

S&box is now an open source game engine

s&box engine is now open source under MIT license, allowing users to view, modify, and use its code for their own projects. The team has made several improvements, including fixing terrain issues, implementing texture rotation, and rewriting memory allocation code.

Running Unsupported iOS on Deprecated Devices

https://nyansatan.github.io/resources/projects/sundanceh2a.jpg
The user successfully ported iOS 6 to an iPod touch 3 by modifying the iBoot and DeviceTree, and creating a custom kernelcache with kexts from iOS 6. They also implemented an iBoot exploit and patched various components to make the port work on the iPod touch 3.

The EU made Apple adopt new Wi-Fi standards, and now Android can support AirDrop

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Google updated Android's Quick Share feature to support Apple's AirDrop, allowing users to share files directly between devices. This interoperability is made possible by Apple adopting the Wi-Fi Aware standard, a requirement under the European Union's Digital Markets Act.

Gemini CLI Tips and Tricks for Agentic Coding

https://opengraph.githubassets.com/28808849a110f40e0c77f54db71cdc45afc622059e8c7c48b5a62152cbc015c7/addyosmani/gemini-cli-tips
Gemini CLI is an open-source AI assistant that brings the power of Google's Gemini model directly into your terminal, allowing you to perform various tasks such as coding, debugging, and content generation through natural language prompts. The tool supports features like custom commands, memory addition and recall, checkpointing, and external integrations with Google Docs, Sheets, and Drive, ...

A Fast 64-Bit Date Algorithm (30–40% faster by counting dates backwards)

A new fast date conversion algorithm is presented, achieving a significant speed gain by counting years backwards and using a year-modulus-bitshift technique. The algorithm is accurate over a period of ±1.89 trillion years and uses only 4 multiplications, making it suitable for processing full UNIX 64-bit time.

Alan.app – Add a Border to macOS Active Window

User created a Mac app called Alan to draw borders around active windows, with customizable width and colors. The app can be hidden from the Dock by running a Terminal command.

Compressed filesystems à la language models

https://grohan.co/images/ac.png
The author trained a language model to implement a filesystem and achieved 98% accuracy. They then used the model to compress XML filesystem trees, achieving 44.7% better compression than the original format.

Fara-7B: An efficient agentic model for computer use

https://raw.githubusercontent.com/microsoft/fara/main/figures/model_accuracy_vs_cost_v2_glm_cost_updated.png
Fara-7B is Microsoft's first agentic small language model for computer use, achieving state-of-the-art performance with 7 billion parameters. It completes tasks efficiently, averaging 16 steps per task, and enables on-device deployment with reduced latency and improved privacy.

A woman on a mission to photograph every species of hummingbird

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Carole Turek, a 75-year-old anesthesiologist, is photographing all 366 hummingbird species worldwide. She has 90 species left to capture and has already documented 276 species through her YouTube channel and website, Hummingbird Spot.

C100 Developer Terminal

https://caligra.com/images/og.c100.jpg
Most people don’t write code or manage data, and consumer devices are designed accordingly. But change isn’t made by most people. Progress comes from the people whose work improves our understanding and ability. We think the world needs a brand of computing that stands behind creative technical work, dedicated to creating instead of consuming. Caligra is a new computer company. Our goal is to ...

Don't Download Apps

Companies use apps to collect data and charge different prices based on individual information. Downloading apps can also lead to binding arbitration clauses that limit your rights in case of disputes.

A cell so minimal that it challenges definitions of life

https://www.quantamagazine.org/wp-content/uploads/2025/11/Quasi-lifeforms-cr-Carlos-Arrojo-Lede.webp
Scientists discovered a cell with a severely reduced genome that challenges the definition of life. The cell, named Sukunaarchaeum, lacks essential functions and relies on a host cell for survival.

Show HN: Safe-NPM – only install packages that are +90 days old

https://opengraph.githubassets.com/abce769e44e7aa847130a2e11426311a3cfd09f18010c483d33e4637926fdc07/kevinslin/safe-npm
safe-npm protects against supply chain attacks by only installing package versions at least 90 days old. It trades off bleeding-edge updates for security, one layer in a defense-in-depth strategy.

Show HN: I turned algae into a bio-altimeter and put it on a weather balloon

https://radi8.dev/static/media/payload.webp
Andrew, a high school student and experienced programmer, designed a high altitude balloon payload to study algae fluorescence in the stratosphere, collecting data on altitude, temperature, and light. The project, which included a custom PCB and data compression system, was part of the Apex program and taught Andrew valuable lessons on hardware design, environmental testing, and data compression.

Statistical Process Control in Python

https://timothyfraser.com/sigma/images/9_chart.png
We will learn statistical process control in Python using pandas, plotnine, and scipy to measure variation and identify benchmarks in product quality over time. This workshop applies statistical process control to a case study of a Japanese Hot Springs bath economy, evaluating temperature, pH, and sulfur levels to ensure quality control and maintain reputation.

Show HN: Yolodex – real-time customer enrichment API

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Email enrichment API for developers. Send an email address, get structured customer data: demographics, social profiles, occupation, location. Simple REST API with transparent pricing. 100 free credits. Perfect for customer data enrichment, marketing personalization, and CRM integration.

How Does Microwaving Grapes Create Plumes of Plasma?

https://www.pbs.org/wgbh/nova/media/images/GrapePlamsa-1-3.width-2500.jpg
If you’ve got a couple grapes and a microwave, it’s technically possible to make plasma in the comfort of your own home. The catch? There’s a very real possibility neither the microwave nor the grapes will survive the encounter. For those unwilling to set their kitchens ablaze, however, there’s good news. For one, it’s not terribly hard to sate your curiosity on YouTube—but more importantly, ...

Optery (YC W22) Hiring CISO, Release Manager, Tech Lead (Node), Full Stack Eng

Optery is a profitable automated opt out software that empowers individuals and businesses to control their personal data. It has received multiple awards and raised over $9M in funding from top investors.

DRAM prices are spiking, but I don't trust the industry's why

https://static0.xdaimages.com/wordpress/wp-content/uploads/wm/2025/10/threadripper-lots-of-ram.jpg?&fit=crop&w=1600&h=900
RAM prices have skyrocketed globally due to explosive demand from AI data centers and constrained supply, with major players like Samsung, SK Hynix, and Micron profiting immensely from the crisis. Industry officials point to a perfect storm of booming demand and supply constraints, but some experts are skeptical and suggest that price-fixing may be occurring, given the history of the memory ...

Show HN: KiDoom – Running DOOM on PCB Traces

JOPA: Java compiler in C++, Jikes modernized to Java 6 with Claude

https://opengraph.githubassets.com/3901030e1f15d6ab0516c6dba12324bda64327529dd4fa0f7a5255c1e358adde/7mind/jopa
This fork adds Java 5 and 6 features and uses CMake for building. It includes Jikes, a Java compiler written from scratch by IBM researchers in 1996.

The Weird and Wonderful Chemistry of Audioactive Decay (1986) [pdf]

Surprisingly, Emacs on Android is pretty good

The user set up Emacs on their Android device, using Termux to access CLI tools, and customized the interface for touchscreen use. They also installed a virtual keyboard for easier typing and set up Syncthing to share notes across devices.

Cloudflare outage should not have happened

https://ebellani.github.io/ox-hugo/2560px-Dehio_212_Cluny.jpg
Cloudflare's recent outage was caused by a database/application mismatch due to a query returning unexpected data. The company's root cause analysis missed the real lesson, which is the importance of logical correctness and consistency in database design.

From blood sugar to brain relief: GLP-1 therapy slashes migraine frequency

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Researchers at the University of Naples found that liraglutide reduced migraine days by 11 per month in adults with obesity and chronic migraine. The benefit was linked to pressure modulation, not weight loss, and may offer a new treatment option for people with migraine.

Jakarta is now the biggest city in the world

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The world's population is increasingly urbanized with 45% living in cities, and Jakarta is home to nearly 42 million people. Megacities are expanding with 33 in 2025, and Dhaka is expected to become the world's largest city by the middle of the century.

Image Diffusion Models Exhibit Emergent Temporal Propagation in Videos

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Researchers repurpose image diffusion models for object tracking in videos by interpreting self-attention maps as semantic label propagation kernels. They introduce DRIFT, a framework achieving state-of-the-art zero-shot performance on video object segmentation benchmarks.

Babushka Lady

https://upload.wikimedia.org/wikipedia/commons/thumb/b/b4/John_F._Kennedy_motorcade%2C_Dallas_crop.png/250px-John_F._Kennedy_motorcade%2C_Dallas_crop.png
The Babushka Lady is an unidentified woman present during the 1963 assassination of US President John F. Kennedy who is speculated to have photographed or filmed the events that occurred in Dallas’ Dealey Plaza at the time President Kennedy was shot. Her nickname arose from the US Army headscarf she wore, which was similar to scarves worn by elderly Russian women. Babushka (Russian: бабушка) ...