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

https://openciv3.org/
479•klaussilveira•7h ago•120 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
818•xnx•12h ago•491 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
40•matheusalmeida•1d ago•3 comments

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

https://github.com/valdanylchuk/breezydemo
161•isitcontent•7h ago•18 comments

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

https://github.com/pydantic/monty
158•dmpetrov•8h ago•69 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/
97•jnord•3d ago•14 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
53•quibono•4d ago•7 comments

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

https://eljojo.github.io/rememory/
211•eljojo•10h ago•135 comments

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

https://vecti.com
264•vecti•9h ago•125 comments

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

https://github.com/microsoft/litebox
332•aktau•14h ago•158 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
329•ostacke•13h ago•86 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
415•todsacerdoti•15h ago•220 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
27•kmm•4d ago•1 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
344•lstoll•13h ago•245 comments

Delimited Continuations vs. Lwt for Threads

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

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

https://github.com/phreda4/r3
53•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/
202•i5heu•10h ago•148 comments

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

https://infisical.com/blog/devops-to-solutions-engineering
116•vmatsiiako•12h ago•38 comments

Learning from context is harder than we thought

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

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
248•surprisetalk•3d ago•32 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
28•gfortaine•5h ago•4 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/
1004•cdrnsf•17h ago•421 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
49•rescrv•15h 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
74•ray__•4h ago•36 comments

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

https://red.anthropic.com/2026/zero-days/
38•lebovic•1d ago•11 comments

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

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

How virtual textures work

https://www.shlom.dev/articles/how-virtual-textures-really-work/
32•betamark•14h ago•28 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
41•nwparker•1d ago•11 comments

Claude Opus 4.6

https://www.anthropic.com/news/claude-opus-4-6
2275•HellsMaddy•1d ago•981 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...
8•gmays•2h ago•2 comments
Open in hackernews

Danish Armed Forces expand their presence and continue exercises in Greenland

https://www.fmn.dk/en/news/2025/the-danish-armed-forces-expand-their-presence-and-continue-exercises-in-greenland-in-close-cooperation-with-allies/
106•doener•3w ago

Comments

apples_oranges•3w ago
I wonder how likely Trumps assumption, that Russia or China will take it if he doesn't, is..
sorokod•3w ago
Take it? You mean go to war with NATO over Greenland?
skirge•3w ago
impossible, like war for Cyprus
actionfromafar•3w ago
I wonder if that was a joke or not. :)

If serious: agree, Russia or China won't take Greenland.

sorokod•3w ago
A bit different, nether Russia nor China are NATO members like Turkey and Greece
i80and•3w ago
About 0%. China really has no serious interest in Greenland, and Russia isn't going to trigger direct confrontation with NATO. At least, unless NATO splinters, which is looking somewhat likely now with this foolish US administration.

Russia and China are just made-up excuses for Trump to do what he wants to do: steal territory, at gunpoint if needed.

fsh•3w ago
Zero. Denmark belongs to the EU and NATO, and Greenland has always had a significant NATO military presence to deter any possible threat.
hypeatei•3w ago
We already have military bases there and I'm sure Greenland wouldn't have cared if we asked for a few more. This is all to stroke someone's ego and get their name in a history book.
V__•3w ago
1. The U.S. has multiple bases in Greenland. Denmark, and NATO are also present.

2. Russia can't even expand their presence to Ukraine (not a NATO memeber).

3. China has no access.

So, 0%.

ochrist•3w ago
Currently USA only has one base left: Pituffik Space Base (previously called Thule Air Base). They used to have about 17 bases and several thousand military personnel, but now it's down to about 200. If USA wanted it, they could establish all the bases they wanted and send more people, but they chose to cut down on military presence over the past years. Source: Have worked on that last base several years ago. Also check wikipedia: https://en.wikipedia.org/wiki/Pituffik_Space_Base
actionfromafar•3w ago
The real problem is so many in the Trump base thinks "America Bigger? Trump good."
iamcalledrob•3w ago
Today, the US can defend Greenland as part of NATO, and would have the support of the other NATO nations.
mindcrash•3w ago
They do not really care until the United States takes Greenland. Or NATO outright attacks Russia. Then they do care.

Because controlling Greenland means whoever has it gets excessive control over the Arctic Sea. And both parties, but especially Russia, do not want a party like the United States to have this amount of control given the Arctic is in their backyard.

actionfromafar•3w ago
That sounds reasonable but it's not IMHO. What kind of control is that?

The US had military bases in Greenland when Soviet nukes had to be delivered with bombers flying over Greenland.

When ICBMs became a thing, those bases weren't as important anymore.

mindcrash•3w ago
I'm not talking about military strength, I am talking about shipping lanes.

Something you can already see in Venezuela as we speak: The Trump Administration has essentially blocked countries like Russia and Iran to ship oil from Venezuela.

If they capture Greenland and can build a big Naval presence there they are in a great position to confiscate every cargo ship destined to Russian harbors in the north, and close off China's trading route in the Arctic aswell.

actionfromafar•3w ago
Right. A phone call to Denmark => big Naval presence.

What's the problem? Denmark would have welcomed a big Naval presence in Greenland. It benefits them too.

It should have been:

    America: can we have a big Naval base in Greenland?

    Denmark: sure. 100 year agreement?

It could have been:

    America: give us big Naval base in Greenland or we will annex you!

    Denmark: Eh... sure, are you alright?
We got:

    America: we will annex you.
scotty79•3w ago
In modern world if you want to estimate validity of the message it's a better heuristic to consider the source than the message itself.
AnimalMuppet•3w ago
Lets just say that Russia or China does some surprise attack and lands a bunch of troops in Greenland.

OK, great, they've got troops in Greenland. Now they have to keep them supplied. How are they going to do that? Well, either through the air or by sea.

Does either have a navy that can do that? No. Does either have an air force that can do that against US opposition? No.

So it's really unlikely. Even if China or Russia were stupid enough to do that, they could never hold it.

Now, perhaps the more interesting question: How likely does Trump think it is? Does he think it's real, despite the absurd impossibility of it? Or is he just saying fact-free stuff that he hopes some people will believe?

flyinglizard•3w ago
Countries without a strong nuclear deterrence don't have a seat at the table in this new geopolitical era. Looking at you, Ukraine, Taiwan and (can't believe I'm saying this) Denmark.
k__•3w ago
Yeah, maybe this will make the case for converting France's arsenal to an EU arsenal.
blargthorwars•3w ago
This would be bad for the EU.

France has a first-strike doctrine. It's unique in the world, and it scares the shit out of everybody. An EU arsenal would be a typical retaliatory-strike doctrine.

k__•3w ago
The conversion could include a doctrine change.
gregoriol•3w ago
How would nuclear deterrence work for small entities like Denmark or Taiwan against huge entities like US or China? it only works at similar sizes
Steve16384•3w ago
A nuclear deterrent is still a deterrent, no matter how small. No country (hopefully) wants to risk any kind of nuclear war. Ukraine would never have been invaded if it still had its nukes.
etyhhgfff•3w ago
We cannot know. My best guess is that at some point in the future there will be a military conflict between two parties that have nukes. Pakistan vs India for instance. And although they have nukes they would fight conventionally unless one party is about to lose.
JohnFen•3w ago
> And although they have nukes they would fight conventionally unless one party is about to lose.

In every war, eventually, one side will be about to lose.

flyinglizard•3w ago
It made North Korea essentially invulnerable.
etyhhgfff•3w ago
If absolutely necessary you could take them out in an preemptive strike. They have no second strike capabilities such as SLBMs.

It is still risky of course and not advisable.

dragonwriter•3w ago
> How would nuclear deterrence work for small entities like Denmark or Taiwan against huge entities like US or China? it only works at similar sizes

It works as long as the harm that can be threatened is sufficient to outweigh any perceived gain of winning. Small states may not be able to sustain as large of an arsenal, but they also rarely offer as much value to a victor.

luke5441•3w ago
There is a French tripwire force on the ground now as well. Denmark has allies.
0928374082•3w ago
pics (for anyone who prefers a bit more subtlety in their international relations):

https://bilder.deutschlandfunk.de/72/d7/aa/c5/72d7aac5-be14-...

https://media.cnn.com/api/v1/images/stellar/prod/17070508372...

Geonode•3w ago
This is the top post this morning? The issue won't come to military action. But if it did, Denmark could exercise all they want, and it would still last about ten minutes. Not sure how this is relevant to anything.
tomrod•3w ago
Because the hacker community is worried about it, and because it is such a nonce thing to do yet it is still being threatened.
k__•3w ago
It's about what happens globally after an occupation
netsharc•3w ago
> The issue won't come to military action.

How can you be so certain with that diaper-filler in chief?

Deploying troops looks like an attempt to dissuade invasion by highlighting that the optics of US troops capturing (hopefully not shooting at) NATO troops would be real bad...

piva00•3w ago
> Not sure how this is relevant to anything.

You are not sure how it's relevant the main pillar of NATO is openly talking about military action against one of the founding members of NATO?

It's relevant since everything in your life right now if you live in any Western country is reliant on this partnership since the end of WW2. If it changes you'll live in a different world, not sure how this is not relevant to you.

danmaz74•3w ago
Taking Greenland by force against a NATO (supposed?) ally would be the end of "the West" as a largely aligned block since WWII. The effects would be felt by everybody, including technologists.
scotchmi_st•3w ago
Sure the US could para a few soldiers in and raise the flag, but then what? US equipment and training isn’t designed for a country where the average temperature is above freezing for only 3 months of the year. When it’s minus 30 Celsius, lubricants gum up, batteries die and you need ice-breaker ships to resupply forces (which the US doesn’t have many of). Denmark and the other Nordic countries do have equipment and training designed for those conditions, and they know the (vast) landscape well, since they train there.

Imagine Afghanistan but against a modern, professional army and with the weather trying to kill you.

Which isn’t to say that it would be impossible, but certainly it would cost more in terms of casualties and money than most Americans realise.

blargthorwars•3w ago
The US has a military base on Greenland now, and has had more in the past. We also have experience in Alaska and the South Pole.

The US understands cold.

scotchmi_st•3w ago
The military base there is small, and the number of troops trained in Alaska is also comparatively small. It also has little dedicated cold-weather gear, and logistical pipelines (especially if Canada refuses to let them in their airspace/waters) with be very hard to set up.

The US may have some understanding of the cold, but the nordic countries have far more, and are far better prepared.

LastTrain•3w ago
Seema like you don’t want to be bothered about the ugly side of what you voted for.
mcphage•3w ago
> it would still last about ten minutes. Not sure how this is relevant to anything.

I don't think there's much doubt about a US success if it came to that. The relevance—and yes, this is highly relevant—is to determine what would be left of the current world order after those "ten minutes".

aebtebeten•3w ago
for a "rule of law" analysis, see also https://news.ycombinator.com/item?id=46633038
array_key_first•3w ago
You're not sure how the potential for the US to go to war with an EU member state is relevant?
martythemaniak•3w ago
If anyone is wondering why MAGA is obsessed with Greenland: https://www.deadcarl.com/p/the-perverse-interest-in-greenlan...

And if you think it's ridiculous to focus on a random twitter troll to explain this admin, then you don't understand this admin, because impressing these guys (and this guy in particular) is largely all they do.

ryandvm•3w ago
Honestly I think he's right. This is all for one man's vanity and the Republicans are fine with letting him do whatever he wants as long it means they get their policy wins and, more importantly, he doesn't post something nasty about them on Truth Social.

Dumbest fucking timeline ever.

skirge•3w ago
Europe, reactive not proactive.
Steve16384•3w ago
Out of curiosity, what do you think they should have done?
amelius•3w ago
I suppose the answer would be "build a better army, 20 years ago".
scotty79•3w ago
Americans were very efficiently suppressing such ideas. They were never interested in Europe having effective army. They only wanted to sell equipment and partially support their bases with European money. When the school bully is your "friend" you don't exactly have the freedom to do what's best for you.
taneliv•3w ago
As a European (but not Danish), I feel like https://en.wikipedia.org/wiki/Conscription_in_Denmark is quite proactive.
skirge•3w ago
how many months in Arctic training?
taneliv•3w ago
Nice try, Mr. Spy!

If I were to guess, probably all of the months (four to twelve) in units that are in the Arctic, and (very close to) zero months in other units. I also don't know how well military experience from other Danish regions translates to the Arctic. Probably quite well, I'd imagine.

petcat•3w ago
I feel like this is all going to end up with Denmark agreeing to long-term resource share with USA where USA gets something like 85% in exchange for Denmark getting to keep the title.

Nobody is going to war over this and Denmark/EU wants to save face.

LastTrain•3w ago
Agree, under threat of coercion.
willvarfar•3w ago
Greenland and Denmark have always been encouraging minerals deals etc, they just haven't materialized.
mcphage•3w ago
> Nobody is going to war over this and Denmark/EU wants to save face.

I'm not so sure. Between all of Trump antics, and Russia's invasions, I think they're starting to realize that if you let the bully take the small things you don't especially care about, they're just going to demand bigger things.

aebtebeten•3w ago
thoughts on a potential legal framework re: Operation Arctic Endurance: https://news.ycombinator.com/item?id=46630190

list of countries offering some form of allied support, so far: CA DE ES FI FR* IS IT NL NO PO SE UK* (*P5 seat)

JohnFen•3w ago
> Nobody is going to war over this

I disagree. I think that the US could very easily trigger a war here (I suspect that's the intention), and not a war that would be contained to Greenland. It's not just about Greenland or Denmark, after all.

duxup•3w ago
I wouldn’t put anything past the current administration.

Growing up I couldn’t imagine people being interrogated by masked armed men for daring to … go for a walk in the US. But that’s a thing now.

Trump threatened to use the insurrection act just today for other “problems”.

dathinab•3w ago
The thing is:

- Greenland has always been open for companies starting mining resources under fair terms. But while they have a lot of resources Greenland is mostly cliffs and glaciers, worse increasingly melting glaciers and permafrost in cliffs, i.e. increasingly unstable terrain. Little infrastructure you can take advantage on. Few places you can safely build harbors. Wetter so cold that a lot of equipment simply would fail. So it's not nearly as profitable as it might look. Maybe you can make some decent profit if you run it like the soviet union ran many things, i.e. forced labor with 10s of thousands of people dying.

- The US has one military outpost in Greenland, and AFIK they don't need more to a) protect the US from that direction and b) project power to arctic shipping routes and similar. And realistically if this where to actually need some expansion then any past president probably could have come to an reasonable agreement with Greenland. I mean it's land they don't use and can give for some monetary benefit to one of their closest allies while implicitly gaining some added protection, like why would you say no to that. Except maybe the past Trump presidency as he had already been eroding checks and balances then and that is a red flag for trusting that an ally will stay an ally.

> Nobody is going to war over this and [..] wants to save face.

This is what people also said about:

- Hitler starting WW2 (like seriously he said he would start war, neighbors countries where like: "Nah no way he is just barking")

- Same, but after Hitler had already rearmed Germany and sized some boarder territory (he -> war, other countries -> na, no way he actually want to start another large scale war)

- heck even after he invaded Poland many still insisted that there is no way he would go beyond that as that would be just supper dump

- a Wall being build around west Berlin to prevent people from entering it (there is a famous citate: "Nobody intends to build a wall." (after rumors started that they might want to do that, many people believed them as build a wall would just be too absurd))

- during WW2 most Germans (in cities) knew something really bad is happening to Jews, many approached it like "there is no way he is literally killing all of them" (even trough he kinda wrote exactly that in his book)

- etc. etc.

The point is humans are very very prone to make them-self believe that there is no way some very unpleasant possibilities will happen.

Also if person who as repeatedly shown to act unreasonable, sometimes outright despotic, with clear autocratic tendencies, who has shown to be fully fine with civilians suffering or dying as consequence of his actions says "I want to size your country", and has the military might to do so, you should assume that they want do _exactly that_ (at least in the moment when saying that).

Historically speaking claiming that "nobody wants that, because it's supper dump" has rarely ended well.

Lets hope it wont happen anyway it would likely spiral into WW3 as it's a pretty clear signal for China that the the US has lost most of its allies and Nato is disfunctional and the EU is weaker and more likely to work with or at least unlikely to antagonize them then ever before (in recent times). If not now when else is a better time to size Taiwan. China increasingly doesn't need TSMC, the rest of the world including the US do. China might even profit from it being destroyed in the war... Really don't give them a reason to believe Nato is weak it will screw over the quality of live/cost of living/etc. of pretty much all western countries for years to come.

alpineman•3w ago
What a waste of resources to have to defend against one of your closest allies. This is a country that went to war on behalf of the US in Afghanistan (and lost 44 souls doing so). Disrespectful and shameful.
kcplate•2w ago
Wow that seems really strange to me to bring up that body count as some sort of guilt trip mechanism in your criticism. But if we are going to play that game, how about we also list how many Danish and US soldiers died in Europe during WW2.
lnsru•3w ago
This is super interesting to watch. NATO will collapse as it is and hopefully Europe will crawl from under the skirt of Americans. I mean being there for 80 years after end of WW2 was a long time to develop some feeling of independence. Greenland is still a price to pay. Carelessness and ignorance aren’t cheap. Or Europe will be only very worried and sad again. I hope not. President Trump is a great wake up call for Europeans. Much better than million russian soldiers.
amelius•3w ago
> President Trump is a great wake up call for Europeans.

This is not a wake up call. This is more like being stabbed while sleeping over at your best friend's house.

scotty79•3w ago
Obviously sycophants of the dictator taken over all civil institutions as evidenced by the quality of this term when compared to previous one.

But are there any signs that they have taken over the military? Iran and Venezuela was something they had in mind for decades. But are there any generals itching to test themselves invading Greenland against European military? They don't have to obey the civilians. Rule of law is a thin veneer that this president stripped clean. Now personal interests of the people in power is what matters. Are there any generals with personal interest to invade Greenland and fight Europe? They obviously can develop some but it should take few years at least, right?

ChrisArchitect•3w ago
Previously: https://news.ycombinator.com/item?id=46617108