High Air Pollution Could Diminish Exercise Benefits by 50%, Study Finds

70 ashishgupta2209 2025-11-29 11:15:27 UTC scienceclock.com Llama Share 19

A new study suggests exercise may not provide the same benefits in polluted areas, with protective effects dropping to 12-15% in areas with high PM2.5 levels. Cleaner air and regular exercise are both crucial for healthy ageing, and tackling pollution can significantly enhance health gains.

DMT-induced shifts in criticality correlate with self-dissolution

21 Anon84 2025-11-29 12:15:27 UTC jneurosci.org Llama Share 1

DMT shifts brain oscillations away from criticality, increasing entropy and reducing complexity. This shift correlates with intensity of self-dissolution in psychedelic experience.

System 7 natively boots on the Mac mini G4

220 ibobev 2025-11-29 04:15:27 UTC macos9lives.com Llama Share 48

A user has successfully booted and run various Mac OS versions on a Mac mini G4, including System 7.5, 7.5.3, 7.6, 8.1, and 9.2.2, thanks to patches and ROM files created by Rairii and ELN.

Leak confirms OpenAI is preparing ads on ChatGPT for public roll out

82 fleahunter 2025-11-29 12:15:27 UTC bleepingcomputer.com Llama Share 37

ChatGPT may introduce ads in its Android app, initially limited to search experience, with highly personalized content. This could impact user experience, especially if ads are not disabled.

WinApps: Run Windows apps as if they were a part of the native Linux OS

196 klaussilveira 2025-11-29 04:15:27 UTC github.com/winapps-org Llama Share 87

WinApps allows running Windows applications on GNU/Linux with KDE Plasma, GNOME, or XFCE, seamlessly integrating with the host system. It supports all Windows applications, except kernel-level anti-cheat systems, and offers a community-driven list of tested applications.

Airbus A320 – intense solar radiation may corrupt data critical for flight

369 pyrophoenix 2025-11-28 22:15:27 UTC airbus.com Llama Share 107

Airbus has identified A320 Family aircraft that may be impacted by intense solar radiation corrupting flight control data. Airbus is working with aviation authorities to issue a precautionary software and/or hardware update to ensure fleet safety.

Garfield's Proof of the Pythagorean Theorem

63 benbreen 2025-11-29 07:15:27 UTC en.wikipedia.org Llama Share 32

James A Garfield, the 20th US president, discovered an original proof of the Pythagorean theorem in 1876. His nontrivial proof involves congruent triangles and the area of a trapezoid.

Every mathematician has only a few tricks (2020)

159 nill0 2025-11-29 02:15:27 UTC mathoverflow.net Llama Share 35

Mathematicians often rely on a few key tricks or techniques that they have mastered and can apply in various situations, such as interchanging the order of summation, applying the Cauchy-Schwarz inequality, or using generating functions. These tricks can be used to solve a wide range of problems and can be combined in various ways to tackle more complex challenges.

Show HN: Explore what the browser exposes about you

90 coffeecoders 2025-11-29 07:15:27 UTC neberej.github.io Llama Share 32

The summary describes various device and browser properties that can be detected, including mobile status, touch support, and Do Not Track settings. These properties are determined through user agent checks, event existence, and other methods to provide insights into device capabilities and user preferences.

Imgur geo-blocked the UK, so I geo-unblocked my network

424 tymscar 2025-11-28 19:15:27 UTC blog.tymscar.com Llama Share 146

User's internet provider blocked Imgur in the UK, causing issues with accessing old links. They created a solution using a VPN-connected container and Nginx to automatically route Imgur traffic through a non-UK exit point.

Belgian Police exposed using botnets to manipulate EU data law impact assessment

93 saubeidl 2025-11-29 11:15:27 UTC old.reddit.com Llama Share 13

Register or sign in with developer credentials and ensure a unique User-Agent string to access the application. If blocked, try default User-Agent or file a ticket for assistance.

WebR – R in the Browser

12 creata 2025-11-29 10:15:27 UTC webr.sh Full Share 1

Interactive R environment running in your browser. Execute R code, create plots, and analyze data without installing anything.

Confessions of a Software Developer: No More Self-Censorship

260 Kerrick 2025-11-28 23:15:27 UTC kerrick.blog Llama Share 221

The author was afraid to publish due to fear of being judged, but now feels free to write about their knowledge gaps and personal struggles. They want to help others learn and fill in their own gaps.

Molly: An Improved Signal App

361 dtj1123 2025-11-28 18:15:27 UTC molly.im Full Share 212

Molly is an improved Signal app for Android

So you wanna build a local RAG?

313 pedriquepacheco 2025-11-28 17:15:27 UTC blog.yakkomajuri.com Llama Share 73

Skald aims to provide a self-hostable, data-privacy-focused RAG setup using open-source tech, allowing users to substitute third-party services with local options. The setup uses Postgres, Sentence Transformers, and Docling, and benchmarks show good performance for point queries in English, but struggles with aggregating context from multiple documents.

How stealth addresses work in Monero

31 ibobev 2025-11-29 08:15:27 UTC johndcook.com Llama Share 13

Alice runs a confidential restaurant accepting Monero payments through QR codes for her public view key A and spend key S. Bob pays Alice using elliptic curve cryptography and ring signatures to maintain anonymity.

A triangle whose interior angles sum to zero

114 tzury 2025-11-29 01:15:27 UTC johndcook.com Llama Share 53

Spherical and hyperbolic triangles have unique properties, with area determined by angle excess or defect. In both geometries, small triangles have interior angles near π.

I Know We're in an AI Bubble Because Nobody Wants Me

55 iparaskev 2025-11-29 10:15:27 UTC petewarden.com Llama Share 39

The author, an ML infrastructure engineer, wrote the Jetpac framework to run AI models at scale on low-cost hardware, and now leads Moonshine, a company focused on AI efficiency. He believes the current AI bubble is unsustainable due to inefficient spending on hardware.

The risk of round numbers and sharp thresholds in clinical practice

42 asplake 2025-11-29 04:15:27 UTC nature.com Llama Share 13

Researchers found that round-number thresholds in clinical decision-making can distort risk assessments and lead to suboptimal patient outcomes. An interpretable machine learning model identified statistical artifacts caused by threshold-based practices and suggested periodic reassessment of clinical guidelines to improve patient outcomes.

Show HN: Anthony Bourdain's Lost Li.st's

58 gregsadetsky 2025-11-29 03:15:27 UTC bourdain.greg.technology Llama Share 18

Anthony Bourdain shares his opinions on various topics including food, movies, and travel destinations.

Airloom – 3D Flight Tracker

235 azinman2 2025-11-28 17:15:27 UTC objectiveunclear.com Full Share 73

Real-time 3D visualization of aircraft flight paths. Watch live flights with stunning ribbon trails across the sky.

Language is primarily a tool for communication rather than thought (2024) [pdf]

84 netfortius 2025-11-28 23:15:27 UTC gwern.net Llama Share 33

Language is a tool for communication, not a prerequisite for complex thought, and its emergence has transformed human culture. The language network in the human brain is abstract and sensitive to linguistic meaning, but not necessary for various forms of thought.

The original ABC language, Python's predecessor (1991)

114 tony 2025-11-28 20:15:27 UTC github.com/gvanrossum Llama Share 40

The ABC programming language sources exist in two versions, one in a tar ball and another in Luciano Ramalho's GitHub. The language is intended to work on 32-bit systems but may be upgraded for 64-bit systems.

Show HN: Choose your own adventure style Presentation

47 skarlso 2025-11-29 01:15:27 UTC github.com/skarlso Llama Share 9

The system allows live polling for tech talks and workshops by voting on what happens next in a presentation written in markdown files with decision points. It uses WebSockets for real-time communication and is currently in heavy alpha with a Go backend and Alpine.js frontend.

28M Hacker News comments as vector embedding search dataset

417 walterbell 2025-11-28 18:15:27 UTC clickhouse.com Llama Share 155

The Hacker News dataset contains 28.74 million postings with 384-dimensional vector embeddings for real-world vector search application design and performance analysis. It can be used with ClickHouse and Sentence Transformers for vector similarity search and Generative AI applications.

Electron vs. Tauri

98 birdculture 2025-11-28 20:15:27 UTC dolthub.com Llama Share 52

The Dolt Workbench is an open-source SQL workbench built using Electron and Next.js, but it has drawbacks such as bloat and compatibility issues. Tauri is a newer framework that solves these problems, but it has its own issues like lack of support for certain Windows bundles and MacOS universal binaries.

Show HN: Mu – The Micro Network

45 asim 2025-11-29 03:15:27 UTC github.com/asim Llama Share 25

Mu is a membership-based network that offers ad-free, algorithm-free services in exchange for a monthly subscription fee, promoting sustainability and direct voice to the team. This model shifts focus from selling features to supporting the tools and community.

A first look at Django's new background tasks

123 roam 2025-11-28 22:15:27 UTC roam.be Llama Share 29

Django 6.0 introduces a built-in background tasks framework in django.tasks, allowing task creation and queuing, but execution must be managed by external infrastructure. A custom backend and worker can be created to send notifications to phones and other devices using ntfy.sh, demonstrating the framework's capabilities.

True P2P Email on Top of Yggdrasil Network

153 basemi 2025-11-28 17:15:27 UTC github.com/jb-selfcompany Llama Share 26

Tyr is a P2P email app that runs on Android devices, using the Yggdrasil network for transport and strong encryption. It provides email freedom by running a complete email server on the device, allowing users to send and receive encrypted emails.

I mathematically proved the best "Guess Who?" strategy [video]

69 surprisetalk 2025-11-28 21:15:27 UTC youtube.com Embed Share 17