Finnish sauna heat exposure induces stronger immune cell than cytokine responses

Finnish sauna bathing induces immune cell mobilization and changes in circulating cytokines, particularly in response to body temperature changes. The study found associations between sauna-induced heat stress and immune activation, which may partly mediate the health benefits of sauna bathing.

Iguanaworks has closed down. USB Infrared hardware open source maker

http://iguanaworks.net/products/images/USB-IR-Transceiver310square.jpg
The USB IR Transceiver sends and receives IR signals to and from devices under Linux and Windows. It supports LIRC for Linux and WinLIRC for Windows, allowing control of home electronics and media centers.

The threat is comfortable drift toward not understanding what you're doing

The author argues that the use of AI agents in academic research can lead to a loss of understanding and critical thinking skills among students, as they rely on machines to do the work for them instead of learning through hands-on experience. The author believes that the key to becoming a good scientist is not just producing results, but also developing the ability to think critically and ...

A Claude Code skill that makes Claude talk like a caveman, cutting token use

https://camo.githubusercontent.com/9e9c879d0179e6b0b9dbe2cab5ddbb9dedaf7962e1680c51b89f6f2d4aaa412a/68747470733a2f2f656d2d636f6e74656e742e7a6f626a2e6e65742f736f757263652f6170706c652f3339312f726f636b5f31666161382e706e67
Claude Code skill reduces token usage by 75% by speaking like a caveman. It simplifies complex tech explanations into few tokens.

Eight years of wanting, three months of building with AI

The user built a high-quality set of devtools for SQLite called syntaqlite with the help of AI coding agents, which proved to be an incredible force multiplier for implementation but a dangerous substitute for design. The user learned that AI excels at giving the right answer to specific technical questions but lacks sense of history, taste, and human experience, requiring careful use and ...

Someone at BrowserStack Is Leaking Users' Email Address

https://shkspr.mobi/blog/wp-content/uploads/2026/03/No-spam.webp
User generates unique email addresses for services to prevent credential stuffing and identify leaks. Apollo.io claims to have user's email from BrowserStack, but user suspects it's due to normalizing personal info trade with no respect for privacy.

Artemis II crew see first glimpse of far side of Moon

https://ichef.bbci.co.uk/news/480/cpsprodpb/1492/live/74921060-2f98-11f1-a79a-77e93010d956.jpg.webp
Nasa's Artemis II crew saw the far side of the Moon for the first time. They shared a photo of the Orientale basin, marking the first time it's been seen with human eyes.

Japanese, French and Omani Vessels Cross Strait of Hormuz

Friendica – A Decentralized Social Network

Lisette a little language inspired by Rust that compiles to Go

https://lisette.run/og.png
The code is written in Lisette, a programming language that supports algebraic data types, pattern matching, and immutable data structures by default. It includes various functions and data structures for tasks such as loading configuration files, handling messages, and reporting metrics, as well as error handling and type checking features.

Show HN: A game where you build a GPU

Hightouch (YC S19) Is Hiring

https://hightouch.com/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Faura-bg-green.15331510.png&w=3840&q=75&dpl=dpl_XMWS2dfwRZjFzGGt4jJYa5q3eoAC
Hightouch is a fast-paced startup that values innovation, kindness, and exceptional talent. It offers competitive compensation, equity, and benefits to support employees' growth and well-being.

Sad Story of My Google Workspace Account Suspension

https://substackcdn.com/image/fetch/$s_!kGwZ!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F362d1ec4-851b-4471-8a31-7a97ab843c05_535x436.png
The writer's Google account was suspended due to a mistaken hijacking claim, causing email and authentication issues. Despite multiple attempts and case submissions, the issue remains unresolved after over 40 hours.

German implementation of eIDAS will require an Apple/Google account to function

The Wallet Unit provides authentication means bound to multiple identification means via public/private key pairs, ensuring resistance against attackers with high attack potential. The solution monitors identified vulnerabilities for the HKS and operating system of user devices through a mobile device vulnerability management (MDVM) during operation.

EPA Official in Charge of Methane Regs Wrote Oil Industry Argument Against Them

https://www.propublica.org/wp-content/uploads/2026/03/GettyImages-2202864000.jpg?w=1149
Aaron Szabo, an EPA assistant administrator, previously lobbied for oil and gas companies and helped draft a letter against methane pollution rules. He is now soliciting input from oil industry groups to revise the rules, raising concerns about the EPA's impartiality.

OpenScreen is an open-source alternative to Screen Studio

https://raw.githubusercontent.com/siddharthvaddem/openscreen/main/public/preview3.png
OpenScreen is a free app for making product demos and walkthroughs, offering basic features without the cost of Screen Studio. It's open-source and free for personal and commercial use, but may require terminal commands for macOS setup.

Introduction to Computer Music (2009) [pdf]

A putative love song could instill varying levels of hatred. 158 just because many participants in one culture agree'sad' doesn't prove universal affect 4 log2(0) = 0 - so there is no entropy in the process of removing the noise from the signal if you want to change the amplitude of the frequency shifted 152 db / s 156 khz eq

Shared mutable state in Rust (2022)

To share a mutable value in Rust, you can use a combination of Arc and Mutex to ensure thread safety, but be careful not to lock the mutex in async code to avoid deadlocks. Instead, define non-async methods on a wrapper struct and lock the mutex there, or use an asynchronous lock if necessary, and consider alternative approaches like RwLock, arc-swap, or eventually consistent maps.

Common drug tests lead to tens of thousands wrongful arrests a year

https://media.cnn.com/api/v1/images/stellar/prod/gettyimages-1315503627.jpg?c=original&q=w_860,c_fill
A new Colorado law bans arrests based solely on colorimetric drug test results due to high false-positive rates. The law aims to prevent innocent people from being wrongly charged and jailed.

Aegis – open-source FPGA silicon

https://opengraph.githubassets.com/9faf490630fa1a6c9ed97afa676a917bd6520358722032fdb139d822728ba184/MidstallSoftware/aegis
Aegis is an open-source FPGA project that generates open fabric designs and toolchains, using open PDKs and shuttle services for real silicon. It uses ROHD to generate synthesizable SystemVerilog and follows Xilinx-style conventions for configuration.

Scientists Figured Out How Eels Reproduce (2022)

https://www.intelligentliving.co/wp-content/uploads/2022/10/Scientists-Track-Eels-to-Their-Ocean-Breeding-Grounds-in-World0.jpg
Scientists have tracked European eels to their breeding grounds in the Sargasso Sea, solving a 100-year-old mystery. Eels migrate thousands of miles, facing obstacles like dams and pollution, and die soon after reproducing.

SPF/PC v4 for MS-DOS, FreeDOS, x86

https://opengraph.githubassets.com/828b6115055935d75e736075de2f3d6b2a7bcceb939c6218e1a4fa2106def60c/moshix/SPFPC
SPF/PC is the SPF editor for MS-DOS. Contribute to moshix/SPFPC development by creating an account on GitHub.

Banray.eu: Raising awareness of the terrible idea that is always-on AI glasses

https://banray.eu/banray.png
In 2025, Meta sold over seven million pairs of camera-equipped glasses that look like regular Ray-Bans.[1] The person wearing them looks like anyone else. But these people are now products, as is everyone they interact with. A joint investigation by Svenska Dagbladet and Göteborgs-Posten revealed that footage recorded by Meta's Ray-Ban glasses is sent to Sama, a subcontractor in Nairobi, ...

LLM Wiki – example of an "idea file"

Show HN: OsintRadar – Curated directory for osint tools

Discover curated OSINT tools, categories, and workflows for investigations, attribution, digital research, and faster open-source intelligence analysis.

How many products does Microsoft have named 'Copilot'?

You tried to explain Microsoft Copilot but found multiple uses of the name, leading to confusion. You created a map of all 75+ Copilots, grouped by category, but couldn't find a pattern.

Rubysyn: Clarifying Ruby's Syntax and Semantics

https://opengraph.githubassets.com/815443f39a44ccefaefe1946675094db440c8d598b8fe73905f8da829c1193be/squadette/rubysyn
This text describes an alternative Lisp-based syntax for Ruby, preserving Ruby semantics, and discusses various aspects of Ruby syntax and semantics, including array splat, variable assignment, and method calls. It also introduces a new language called Rubysyn, which is used to define the execution semantics of Ruby, including control flow, variable declarations, and memory management.

Zml-smi: universal monitoring tool for GPUs, TPUs and NPUs

https://zml.ai/img/posts/zml-smi/1.png
zml-smi is a diagnostic tool for GPUs, TPUs, and NPUs providing real-time performance and health insights. It supports NVIDIA, AMD, Google TPU, and AWS Trainium devices with various metrics.

Show HN: I made open source, zero power PCB hackathon badges

https://private-user-images.githubusercontent.com/88850028/573663592-31bc2249-8f35-4ed4-b9d6-c4fc2e519038.png?jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.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.JAIEAtZ5JhQHS4vLLSAJPXRKm-wAQYxHVb5uovgdZEw
You designed zero-power hackathon badges for the Overglade hackathon in Singapore using RP2040, NFC, and e-ink. The boards are easy to set up and manufacture, with costs starting at around $100 for 5 units.

Show HN: M. C. Escher spiral in WebGL inspired by 3Blue1Brown

The Droste effect is a recursive image embedding where a smaller version of an image is placed inside itself, creating a theoretically infinite spiral. This effect can be achieved by transforming the image's coordinates from cartesian to polar and then rotating in polar space.