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Show HN: Jwtpeek – minimal, user-friendly JWT inspector in Go

https://github.com/alesr/jwtpeek
1•alesrdev•52s ago•0 comments

Willow – Protocols for an uncertain future [video]

https://fosdem.org/2026/schedule/event/CVGZAV-willow/
1•todsacerdoti•2m ago•0 comments

Feedback on a client-side, privacy-first PDF editor I built

https://pdffreeeditor.com/
1•Maaz-Sohail•6m ago•0 comments

Clay Christensen's Milkshake Marketing (2011)

https://www.library.hbs.edu/working-knowledge/clay-christensens-milkshake-marketing
2•vismit2000•12m ago•0 comments

Show HN: WeaveMind – AI Workflows with human-in-the-loop

https://weavemind.ai
4•quentin101010•18m ago•1 comments

Show HN: Seedream 5.0: free AI image generator that claims strong text rendering

https://seedream5ai.org
1•dallen97•20m ago•0 comments

A contributor trust management system based on explicit vouches

https://github.com/mitchellh/vouch
2•admp•22m ago•1 comments

Show HN: Analyzing 9 years of HN side projects that reached $500/month

2•haileyzhou•22m ago•0 comments

The Floating Dock for Developers

https://snap-dock.co
2•OsamaJaber•23m ago•0 comments

Arcan Explained – A browser for different webs

https://arcan-fe.com/2026/01/26/arcan-explained-a-browser-for-different-webs/
2•walterbell•24m ago•0 comments

We are not scared of AI, we are scared of irrelevance

https://adlrocha.substack.com/p/adlrocha-we-are-not-scared-of-ai
1•adlrocha•25m ago•0 comments

Quartz Crystals

https://www.pa3fwm.nl/technotes/tn13a.html
1•gtsnexp•28m ago•0 comments

Show HN: I built a free dictionary API to avoid API keys

https://github.com/suvankar-mitra/free-dictionary-rest-api
2•suvankar_m•30m ago•0 comments

Show HN: Kybera – Agentic Smart Wallet with AI Osint and Reputation Tracking

https://kybera.xyz
2•xipz•32m ago•0 comments

Show HN: brew changelog – find upstream changelogs for Homebrew packages

https://github.com/pavel-voronin/homebrew-changelog
1•kolpaque•35m ago•0 comments

Any chess position with 8 pieces on board and one pair of pawns has been solved

https://mastodon.online/@lichess/116029914921844500
2•baruchel•37m ago•1 comments

LLMs as Language Compilers: Lessons from Fortran for the Future of Coding

https://cyber-omelette.com/posts/the-abstraction-rises.html
2•birdculture•39m ago•0 comments

Projecting high-dimensional tensor/matrix/vect GPT–>ML

https://github.com/tambetvali/LaegnaAIHDvisualization
1•tvali•40m ago•1 comments

Show HN: Free Bank Statement Analyzer to Find Spending Leaks and Save Money

https://www.whereismymoneygo.com/
2•raleobob•43m ago•1 comments

Our Stolen Light

https://ayushgundawar.me/posts/html/our_stolen_light.html
2•gundawar•44m ago•0 comments

Matchlock: Linux-based sandboxing for AI agents

https://github.com/jingkaihe/matchlock
2•jingkai_he•47m ago•0 comments

Show HN: A2A Protocol – Infrastructure for an Agent-to-Agent Economy

2•swimmingkiim•51m ago•1 comments

Drinking More Water Can Boost Your Energy

https://www.verywellhealth.com/can-drinking-water-boost-energy-11891522
1•wjb3•54m ago•0 comments

Proving Laderman's 3x3 Matrix Multiplication Is Locally Optimal via SMT Solvers

https://zenodo.org/records/18514533
1•DarenWatson•56m ago•0 comments

Fire may have altered human DNA

https://www.popsci.com/science/fire-alter-human-dna/
4•wjb3•57m ago•2 comments

"Compiled" Specs

https://deepclause.substack.com/p/compiled-specs
1•schmuhblaster•1h ago•0 comments

The Next Big Language (2007) by Steve Yegge

https://steve-yegge.blogspot.com/2007/02/next-big-language.html?2026
1•cryptoz•1h ago•0 comments

Open-Weight Models Are Getting Serious: GLM 4.7 vs. MiniMax M2.1

https://blog.kilo.ai/p/open-weight-models-are-getting-serious
4•ms7892•1h ago•0 comments

Using AI for Code Reviews: What Works, What Doesn't, and Why

https://entelligence.ai/blogs/entelligence-ai-in-cli
3•Arindam1729•1h ago•0 comments

Show HN: Solnix – an early-stage experimental programming language

https://www.solnix-lang.org/
4•maheshbhatiya•1h ago•0 comments
Open in hackernews

Sodium batteries are finally catching up

https://www.sciencedaily.com/releases/2025/10/251016223116.htm
27•tromp•3mo ago

Comments

hn_throwaway_99•3mo ago
> The current research advances sodium as a viable alternative for batteries, a vital step to combat the rarity and environmental damage of lithium. It's one of many steps ahead.

Curious what some of the many steps ahead are. Seems like these articles about battery breakthroughs WRT non-lithium chemistries come out frequently, but nothing ever seems to come to fruition, and lithium still dominates. Just want to know why all these breakthroughs never make it to industrial scale.

theragra•3mo ago
From my limited research, sodium batteries are somewhat commonly used in Chinese EV.
cultofmetatron•3mo ago
Even if sodium ion batteries have a quarter the energy density of lithium, they are still a massive win for grid scale storage. Honestly don't know why there's such a push for them in EVs when lithium works fine there. The cost benefit of sodium ion really makes a lot more sense when you can just drop a bunch of them on a lot of land and have it essentially be a reserve of power for a municipality.
hyghjiyhu•3mo ago
What are your thoughts on sodium batteries vs water electrolysis for grid scale?
cultofmetatron•3mo ago
water electrolysis is mind numbingly inefficient + you still have the hydrogen embrittlement problem. Additionally, you then also need a hydrogen fuel cell which relies on some pretty expensive materials like paladium. Lithium ion batteries already are a better fit for small scale grid storage since all you need is the battery and a power management system. Sodium even if its not as good as lithium for density will still be a much better fit for the vast majority of use cases than electrolysis from a maintence and power efficiency perspective.
chris222•3mo ago
The safety aspect of them is probably more important than in grid storage. Also the performance at colder temps.
ianburrell•3mo ago
Sodium doesn't make sense for vehicles when there are safer lithium chemistries like LiFePO4 that have lower density than the combustible ones but better than sodium.

LiFePO4, and presumably sodium-ion, can burn once ignited but should be hard to get started.

jerf•3mo ago
The tech is hitting the market now: https://www.bluettipower.com/products/sodium-ion-battery-pio...

YouTube has some reviews if you're interested. They're out in the wild now. Not being in the industry, I was a bit surprised when YouTube randomly popped up some recommendation about that. I didn't realize it was that far along.

theragra•3mo ago
You can also buy cells directly from china.

I found this store, which seems somewhat reliable https://hakadibattery.com/collections/sodium-ion-battery-cel...

Havoc•3mo ago
Keen to use them for hobby purposes. The idea of DIY soldering and lithium has never appealed from a safety pov
theragra•3mo ago
Lithium has several much safer chemistries then we use in phones. LTO for example, or LiFePo4
theragra•3mo ago
I've recently wondered, can you buy consumer sodium cells. Apparently, the only way is to order from china directly.

These seem to look more trustworthy (did not order yet) https://hakadibattery.com/collections/sodium-ion-battery-cel...