Claude Sonnet 5

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Claude Sonnet 5 is a more agentic AI model that can make plans, use tools, and run autonomously at a lower price than its predecessor. It's available across all plans and offers a safer and more efficient option for developers, with a lower rate of undesirable behaviors and improved performance on tasks like coding and knowledge work.

Claude Code is steganographically marking requests

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Developers give coding agents excessive access for productivity, but this also raises security concerns. A tool like Claude Code hides classification signals in system prompts, making it harder to trust its claims of transparency.

Claude Science

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Claude Science is a public beta app that integrates AI with scientific computing, allowing users to run full analyses on their own infrastructure. It connects to 60+ scientific databases and domain-specific open models, and produces reproducible results with full provenance.

Nano Banana 2 Lite

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Nano Banana 2 Lite generates and edits images faster and more efficiently, ideal for designers and creators. It provides high-quality images quickly, reducing waiting time and increasing creative flow.

I built a mmWave material classification radar

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The user built a radar that can classify materials, specifically targeting asbestos detection, using a combination of material sciences, wave physics, and neural networks. Due to a lack of funding, the project was stopped after achieving a proof of concept, but the user gained valuable experience in embedded firmware programming, product design, and hardware startup development.

Matrix URIs, a URL syntax from Tim Berners-Lee that never shipped (1996)

Tim Berners-Lee discusses the use of semi-colons in URLs for matrix syntax and relative URLs. He proposes a syntax for pausing relative URLs with named parameter values and questions the significance of parameter order.

County with 37 Data Centers Asks Schools to 'Conserve Electricity'

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Henrico County employees are asked to conserve electricity due to a 25% rate increase for government facilities. They are advised to turn off lights, computers, and appliances when not in use to save money.

Knoppix

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KNOPPIX is a bootable Linux system on CD, DVD, or USB with automatic hardware detection and support for various devices. It can be used as a productive desktop system, educational tool, or rescue system without installing anything on a hard disk.
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Charles Mackay's 1841 book "Memoirs of Extraordinary Popular Delusions" studies crowd psychology through historical examples of financial bubbles and mass hysteria. It remains influential in understanding economic speculation and predicting market crashes.

AI Is Making Us Lose Our Individuality

The user is concerned about AI's negative effects on humanity, making us dumber and more reliant, but notes that similar technologies like books and the internet have not been detrimental as they allow individual thought. The main issue with AI is its potential to create a converged, uniform thinking mass that stifles individuality and divergence.

Don't Make Gates Optional, Make Them Flexible

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Pam's team needs a required approval checkpoint but wants flexibility in formality. A required but lightweight gate lowers stakes and allows for speed.

Open Source Low Tech

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Daniel Connell creates open source, license free technologies using recycled materials for global self-sufficiency. His designs include energy, food, water, and communication systems, with tutorials and a Facebook group for community support.

Building a custom octocopter from scratch with no prior hardware experience

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Chris von Csefalvay plans to train a drone to fly with reinforcement learning, focusing on 6 failure classes and simulating motor lag and loop latency. He's using PPO with parallel environments and an asymmetric actor-critic approach to prepare the drone for real-world crashes.

Set up your own DoH (DNS over HTTPS) service

Tell HN: Installing Cursor on iOS irreversibly changes your privacy settings

User's account was changed to a less private setting after installing the Cursor iOS app, and support cannot switch it back. The app's prompt for Cloud Agents changed the user's privacy setting without clear explanation.

CERN bids farewell to the LHC and enters Long Shutdown 3

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The Large Hadron Collider has completed its final physics run and is undergoing a major maintenance and upgrade program, Long Shutdown 3, to prepare for the High-Luminosity LHC. The upgrade will increase the collider's luminosity by a factor of up to ten, enabling precision studies and potentially uncovering new phenomena.

A peek into Reddit's anti-spam internals

Reddit's spam filter system, which includes spamurai, uses various methods to detect and remove spam content. The system can see internal removal reasons, but only sitewide admins can view them.

Crypto firms have spent $189M so far on 2026 US election, report says

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Factorio 2.1 Experimental Release

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Factorio 2.1 experimental is released with a changelog too long for Reddit, and users can opt in through Steam. The update includes graphics and audio system changes, and the team will continue to fix bugs and gather feedback.

RF Hacking My Cloud-Controlled Ceiling Fan

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The user wanted to control their Dreo ceiling fan locally through Home Assistant, but it only had cloud-based smart home integration. They decoded the remote's RF commands using an RTL-SDR and recreated them with an ESP32 board.

1.38 Millimeter Microcontroller

The MSPM0C110x microcontrollers are part of the MSP highly-integrated ultra-low-power 32-bit MCU family based on the enhanced Arm Cortex-M0+ core platform operating at up to 24MHz frequency. They offer high-performance analog peripheral integration, support extended temperature ranges, and operate with supply voltages from 1.62V to 3.6V.

Zluda 6 release (run unmodified CUDA applications on non-Nvidia GPUs)

ZLUDA has released version 6 with improved Windows support, PhysX pre-alpha, and texture support for Blender. Development is now a weekend project with less frequent updates.

Counterexamples in type systems (2021)

collated by Stephen Dolan, with thanks to Andrej Bauer, Leo White and Jeremy Yallop

SedonaDB 0.4: GPU-accelerated spatial joins

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SedonaDB 0.4 uses GPU-accelerated spatial joins on gaming GPUs, beating an H100 in some queries. RayBooster, an extension, brings ray tracing core acceleration into SedonaDB with a single monolithic index and universal predicate engine.

The best thing that's ever happened for multiplayer games?

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Hi, I'm Glenn Fiedler, I'm a professional game developer working on a 1000 player multiplayer space game. These days I spend a lot of my time thinking about game server hosting costs, and especially egress bandwidth costs: the cost of bandwidth sent from my server out to players over the public internet. This is because my space game sends a lot of bandwidth. 10-20 megabits per-second ...

A Fake Shell for Pangenomics

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The author created a "fake shell" called Flash to speed up pangenomics workflows by opportunistically switching to faster implementations and avoiding I/O. Flash translates shell scripts into an instruction-based IR, allowing for optimizations and performance improvements.

6 years and 360 patches to clean all instances of strnpy out of the Linux kernel

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The C string library is compact and fast but prone to buffer overrun errors if not used carefully. Linux kernel has fixed string usage issues and improved the string library's API to prevent security weaknesses.

Supreme Court upholds broad conception of birthright citizenship

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The Supreme Court upheld state laws banning transgender girls and women from school athletic teams and struck down limits on party spending in federal elections.

Mathematics: Its Content, Methods and Meaning

The book "Mathematics: Its Content, Methods, and Meaning" by Aleksandrov, Kolmogorov, and Lavrent'ev covers various mathematical disciplines in three volumes. It features contributions from prominent Soviet mathematicians, including Gel'fand, and is accessible to strong senior undergraduates.

.self: A new top-level domain designed to support self-hosting

The Human-Centered Computing Foundation aims to create an alternative web architecture that prioritizes user data and attention. They are launching a campaign to secure a new Top-Level Domain for ethical, human-centered technology.