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An AI model that can read and diagnose a brain MRI in seconds

https://www.michiganmedicine.org/health-lab/ai-model-can-read-and-diagnose-brain-mri-seconds
1•hhs•58s ago•0 comments

Dev with 5 of experience switched to Rails, what should I be careful about?

1•vampiregrey•3m ago•0 comments

AlphaFace: High Fidelity and Real-Time Face Swapper Robust to Facial Pose

https://arxiv.org/abs/2601.16429
1•PaulHoule•4m ago•0 comments

Scientists discover “levitating” time crystals that you can hold in your hand

https://www.nyu.edu/about/news-publications/news/2026/february/scientists-discover--levitating--t...
1•hhs•6m ago•0 comments

Rammstein – Deutschland (C64 Cover, Real SID, 8-bit – 2019) [video]

https://www.youtube.com/watch?v=3VReIuv1GFo
1•erickhill•6m ago•0 comments

Tell HN: Yet Another Round of Zendesk Spam

1•Philpax•6m ago•0 comments

Postgres Message Queue (PGMQ)

https://github.com/pgmq/pgmq
1•Lwrless•10m ago•0 comments

Show HN: Django-rclone: Database and media backups for Django, powered by rclone

https://github.com/kjnez/django-rclone
1•cui•13m ago•1 comments

NY lawmakers proposed statewide data center moratorium

https://www.niagara-gazette.com/news/local_news/ny-lawmakers-proposed-statewide-data-center-morat...
1•geox•14m ago•0 comments

OpenClaw AI chatbots are running amok – these scientists are listening in

https://www.nature.com/articles/d41586-026-00370-w
2•EA-3167•15m ago•0 comments

Show HN: AI agent forgets user preferences every session. This fixes it

https://www.pref0.com/
5•fliellerjulian•17m ago•0 comments

Introduce the Vouch/Denouncement Contribution Model

https://github.com/ghostty-org/ghostty/pull/10559
2•DustinEchoes•19m ago•0 comments

Show HN: SSHcode – Always-On Claude Code/OpenCode over Tailscale and Hetzner

https://github.com/sultanvaliyev/sshcode
1•sultanvaliyev•19m ago•0 comments

Microsoft appointed a quality czar. He has no direct reports and no budget

https://jpcaparas.medium.com/microsoft-appointed-a-quality-czar-he-has-no-direct-reports-and-no-b...
2•RickJWagner•21m ago•0 comments

Multi-agent coordination on Claude Code: 8 production pain points and patterns

https://gist.github.com/sigalovskinick/6cc1cef061f76b7edd198e0ebc863397
1•nikolasi•21m ago•0 comments

Washington Post CEO Will Lewis Steps Down After Stormy Tenure

https://www.nytimes.com/2026/02/07/technology/washington-post-will-lewis.html
7•jbegley•22m ago•1 comments

DevXT – Building the Future with AI That Acts

https://devxt.com
2•superpecmuscles•23m ago•4 comments

A Minimal OpenClaw Built with the OpenCode SDK

https://github.com/CefBoud/MonClaw
1•cefboud•23m ago•0 comments

The silent death of Good Code

https://amit.prasad.me/blog/rip-good-code
3•amitprasad•23m ago•0 comments

The Internal Negotiation You Have When Your Heart Rate Gets Uncomfortable

https://www.vo2maxpro.com/blog/internal-negotiation-heart-rate
1•GoodluckH•25m ago•0 comments

Show HN: Glance – Fast CSV inspection for the terminal (SIMD-accelerated)

https://github.com/AveryClapp/glance
2•AveryClapp•26m ago•0 comments

Busy for the Next Fifty to Sixty Bud

https://pestlemortar.substack.com/p/busy-for-the-next-fifty-to-sixty-had-all-my-money-in-bitcoin-...
1•mithradiumn•27m ago•0 comments

Imperative

https://pestlemortar.substack.com/p/imperative
1•mithradiumn•28m ago•0 comments

Show HN: I decomposed 87 tasks to find where AI agents structurally collapse

https://github.com/XxCotHGxX/Instruction_Entropy
2•XxCotHGxX•31m ago•1 comments

I went back to Linux and it was a mistake

https://www.theverge.com/report/875077/linux-was-a-mistake
3•timpera•32m ago•1 comments

Octrafic – open-source AI-assisted API testing from the CLI

https://github.com/Octrafic/octrafic-cli
1•mbadyl•34m ago•1 comments

US Accuses China of Secret Nuclear Testing

https://www.reuters.com/world/china/trump-has-been-clear-wanting-new-nuclear-arms-control-treaty-...
3•jandrewrogers•35m ago•2 comments

Peacock. A New Programming Language

2•hashhooshy•39m ago•1 comments

A postcard arrived: 'If you're reading this I'm dead, and I really liked you'

https://www.washingtonpost.com/lifestyle/2026/02/07/postcard-death-teacher-glickman/
4•bookofjoe•41m ago•1 comments

What to know about the software selloff

https://www.morningstar.com/markets/what-know-about-software-stock-selloff
2•RickJWagner•44m ago•0 comments
Open in hackernews

DNA Learning Center: Mechanism of Replication 3D Animation

https://dnalc.cshl.edu/resources/3d/04-mechanism-of-replication-advanced.html
71•timschmidt•2mo ago

Comments

timschmidt•2mo ago
Complete list of DNALC animations here: https://dnalc.cshl.edu/resources/animations/

Some favorites:

https://dnalc.cshl.edu/resources/3d/13-transcription-advance...

https://dnalc.cshl.edu/resources/3d/16-translation-advanced....

https://dnalc.cshl.edu/resources/3d/08-how-dna-is-packaged-a...

https://dnalc.cshl.edu/resources/3d/central-dogma.html

dataviz1000•1mo ago
> https://dnalc.cshl.edu/resources/3d/central-dogma.html

I stepped over people huddled on the sidewalk, dirty, splicing the fiber optic cable yesterday. I wonder how long before there are little robots that do the splicing without humans?

jcims•1mo ago
My brother does that exact work.

From what I’ve gathered the actual splicing is partly automated today and relatively straightforward if somewhat tedious. The big variable is the context. New construction should have relatively few variables.

With repair, everything goes out the window. I just talked to him last night and he was out on a cable cut repair all night Friday. Middle of a snowstorm, maps were not accurate, repair site was very difficult to work in.

HPsquared•1mo ago
With how massively parallel the human body is, this process is copying DNA at an average rate of around 1 million miles per hour if you put all the DNA into a single string. (Consider that each human cell contains about 2 metres worth of DNA)
pama•1mo ago
I’d be curious about this global replication rate as a function of age.
my-toe-siz•1mo ago
There isn't a global rate, mitotis rate depends on the cell type and many other inputs.

For example, see Table 1: https://book.bionumbers.org/how-quickly-do-different-cells-i...

You /could/ compute a global mean or median mitosis rate, and show how it changes/doesn't change with age, but it wouldn't say very much biologically. A narrower analysis that considers cell type and other context could be meaningful.

af78•1mo ago
A rate of 10 000 (ten thousand) RPM is mentioned in the video for certain bacteria. My background is in mechanical engineering, does RPM stand for revolutions per minute here? Sounds unbelievably fast for biochemical processes.
jcims•1mo ago
Yep

https://en.wikipedia.org/wiki/Helicase

The wild thing is that it doesn't have a 'gas tank' of ATP to drive the reaction, it goes this fast while being fueled one molecule at a time from the environment.

Where does the ATP come from?

Buckle up my mechanical engineer friend - https://www.youtube.com/watch?v=OT5AXGS1aL8

I've watched that video a hundred times and it still gives me chills haha.

rolph•1mo ago
the reactant molecules themselves, are primed with an ATP like a one use capacitor, it provides threshold energy, and is "consumed" as part of the reaction.
jcims•1mo ago
Nice. This was a detail I wasn't picking up on for some reason.
jinnko•1mo ago
I remember studying this in detail 30 years ago. To watch that whole process in a video now it's mind blowing. Thank you.
timschmidt•1mo ago
I find that a good rule is that the smaller the system, the faster the interactions.

Also you may be interested in flagellar motors: https://www.youtube.com/watch?v=VPSm9gJkPxU

christoph123•1mo ago
"Intricate as this mechanism appears, numerous components have been deliberately left out to avoid complete confusion" :D
N_Lens•1mo ago
Wise choice
jcims•1mo ago
One name you'll find associated with many of these animations is Drew Berry.

If I had these when I was in high school in the 80s I truly think I would have gone into molecular biology. They are obviously have flaws in terms of a true representation of the process, but it makes the machine much more apparent and that's always been the thing that kept it at bay for me.

More of this style of animation can be found in the WEHImovies channel on YouTube

https://www.youtube.com/@WEHImovies/videos

rolph•1mo ago
one of the most informative moments, was when instructor broke ranks and referred to figures as "cartoons", and that reset the context for a lot of things.

figures are very sparse, for brevity. the real situation is buried in a mantle of molecules.

the animations dont quite capture what individual molecules are doing, but give snapshots of cannonical points in the process. its a very busy bunch of reaction intermediates, and resonance structures, facilitating the exchange of functionalities.

most important was the concept of a function-repair equilibrium machine, as action cycle of the machine is damaging, and requires immediate repair, in addition to the environmental onslaught of damages.

picture having to check a file for corruption every time its accessed.

bonyt•1mo ago
Hey, working at the DNALC was my first job when I was in high school. I made a port of their iOS 3D brain app for Android, based on pre-rendered images (which was the style at the time - 2009-ish). It looks like it has since been taken down, which makes sense - I targeted my G1 at the time for acceptable performance, and Android broke things as it moved on. I also helped out on some web apps at the time. Great experience.

https://dnalc.cshl.edu/resources/products/3d-brain-app.html

https://web.archive.org/web/20230307055457/https://play.goog...

the__alchemist•1mo ago
It would be so cool if we could (Maybe it's been done?) do this with a simulation!
timschmidt•1mo ago
I spoke to some researchers about this while working for a Science and Technology Research center affiliated with the regional supercomputer center. I was told that there are still far too many molecules in a single cell to simulate fully, but that simulations had been run with state of the art quantum physics simulation software for some dozens or hundreds of molecules over several femtoseconds. The researcher told me that this took several weeks of supercomputer time, and that when the results were examined one take-away was that "around biological molecules, water seems to behave in an exceedingly ordered manner" as if the water molecules themselves are an integral part of the machinery, not just a medium they're suspended in.
the__alchemist•1mo ago
So cool!

I can see how a cell is far too complicated to contemplate at this time. But, if focusing on the video of the DNA replication complex. (DNA strand + a few enzymes), I wonder if it could be in the realm of doable within the coming years or decades.

Re water... yea... I suspect explicit solvents are the way to go. So, you are not just simulating the protein and DNA molecules, but also each water.

timschmidt•1mo ago
I believe the simulation I spoke to the researcher about was around 100 atoms cubed. So 1,000,000 atoms. Numbers vary wildly with cell size, but a typical cell might contain 100 trillion atoms. So, a factor of 100,000 difference in scale. Which would be between 16 and 17 doublings. Around 25 years given Moore's law. The conversation happened probably 8 years ago, so only 17 years to go! lol