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OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
494•klaussilveira•8h ago•135 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
835•xnx•13h ago•500 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
52•matheusalmeida•1d ago•9 comments

A century of hair samples proves leaded gas ban worked

https://arstechnica.com/science/2026/02/a-century-of-hair-samples-proves-leaded-gas-ban-worked/
108•jnord•4d ago•17 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
162•dmpetrov•8h ago•75 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
165•isitcontent•8h ago•18 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
59•quibono•4d ago•10 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
274•vecti•10h ago•127 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
221•eljojo•11h ago•138 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
337•aktau•14h ago•163 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
11•denuoweb•1d ago•0 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
332•ostacke•14h ago•89 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
34•kmm•4d ago•2 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
420•todsacerdoti•16h ago•221 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
355•lstoll•14h ago•246 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
15•gmays•3h ago•2 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
9•romes•4d ago•1 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
56•phreda4•7h ago•9 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
209•i5heu•11h ago•152 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
121•vmatsiiako•13h ago•47 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
32•gfortaine•5h ago•6 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
157•limoce•3d ago•79 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
257•surprisetalk•3d ago•33 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1011•cdrnsf•17h ago•421 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
51•rescrv•16h ago•17 comments

I'm going to cure my girlfriend's brain tumor

https://andrewjrod.substack.com/p/im-going-to-cure-my-girlfriends-brain
90•ray__•4h ago•41 comments

Evaluating and mitigating the growing risk of LLM-discovered 0-days

https://red.anthropic.com/2026/zero-days/
43•lebovic•1d ago•12 comments

How virtual textures work

https://www.shlom.dev/articles/how-virtual-textures-really-work/
34•betamark•15h ago•29 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
78•antves•1d ago•59 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
43•nwparker•1d ago•11 comments
Open in hackernews

Mouthguards that flash red with head impacts to be used at Rugby World Cup

https://www.rnz.co.nz/news/sport/569695/mouthguards-that-flash-red-with-head-impacts-to-be-used-at-rugby-world-cup
49•colinprince•5mo ago

Comments

black_puppydog•5mo ago
Kudos to the image selection team. :)
anitil•5mo ago
It's interesting that this is framed in the context of 'foul play' - I wouldn't be surprised if we find out that even in regular play there's often enough head impact to be concerning. I'm actually surprised this would get approved given that it could put the league in an awkward position of trying to argue why you should ignore the very devices it approved. Usually sports organisations like to put a thumb on the scale in these cases [0]

[0] I could pick many but lets go with the IWF who's largest wikipedia section is the one for corruption - https://en.wikipedia.org/wiki/International_Weightlifting_Fe...

maxo99•5mo ago
Same here. And considering football already has radios in helmets, I'm sure it'd be an easy enough add that they must be avoiding doing the same
happymellon•5mo ago
They already contain radios in the gum shields, and have done for a while.

This is an additional piece to flash red if a concussion level impact occurs, so that medical staff can see faster than the bluetooth signal can sometimes transmit. Referees and audience can also see, so it helps provide more information for everyone.

No one has avoided anything.

CaliforniaKarl•5mo ago
I’m curious, what’s your awareness level of Rugby (Union or League), compared to sports in the US, or soccer worldwide?

I only have cursory knowledge, but seeing a number of videos of player/ref interactions make me think that the authorities are interested in having a game that is both physical and cognizant of the possibility of long-term injury. The players are not wearing helmets, and the refs are OK with using video review (with the videos playing out on the stadium screens) for all to see. It’s very different from US football or worldwide soccer/football.

anitil•5mo ago
> what’s your awareness level of Rugby (Union or League)

I played a little bit of union in my school team (I'm Australian). I'm out of touch with the modern game though. My impression is that league is a bit more tolerant of damage? That could be my 'old boy' bias creeping in.

CaliforniaKarl•5mo ago
It could be that I’m focusing more on Union than League. I’m on the bus and searchability is limited, the example I was going to give (https://youtu.be/JjLIetqAP6U) is Union :)
jarjoura•5mo ago
League has the same zero tolerance policy as union. Though union players seem way beefier and move way slower on the field, so an impact that knocks someone down looks far more dangerous than in league. League players seem fast enough to dodge most impacts. But yea, I think in almost every game I've watched, there's almost always someone getting a headknock that they pull out for an assessment.
squiffsquiff•5mo ago
Wearing American football style helmets does not reduce the risk of concussion which is primarily the result of sudden acceleration or deceleration causing the brain to move around inside the skull https://ideas.ted.com/football-helmets-dont-protect-against-... This is why they have 'soft' helmets in Rugby. American football likes the macho look of its helmets and body armour but for concussion it's essentially safety theatre.
1659447091•5mo ago
The 'foul play' part was more of an "and also..."

It talked about how the new mouthguard lights up "if the impact is severe enough to potentially cause a concussion". So, not just regular head impact it seems.

Then mentions that it's an update to the current "smart mouthguard" which uses Bluetooth, because with "the current system the alerts can take several seconds to reach the match day doctor.". So, it's not just about flagging something illegal but actually goes to match day doctors when the impact is severe. This new one let's people/ref know to wave a doctor over quicker/send them off

At the bottom they added that "the technology could also help identify instances of foul play."

argentinian•5mo ago
There's a risk of Chronic Traumatic Encephalopathy (CTE)[1] in rugby, box and other sports where your head is hit.

I believe that many people don't know about this, otherwise they would not allow their children to practice dangerous sports.

[1] https://my.clevelandclinic.org/health/diseases/17686-chronic...

pmarreck•5mo ago
I'm glad they're at least taking this step. Being informed is the first thing you should do.
snitzr•5mo ago
If the brain wasn't hidden, injuries would be seen with our eyes the way cuts and bruises are seen, and nobody would play rugby or other impact sports ever again.
throwawaylaptop•5mo ago
People race motorcycles and have been known to break collar bones Friday, have a plate installed overnight, and race Sunday at 210mph.