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Show HN: PeriodicTableOfElements.org

https://periodictableofelements.org/?lang=en
1•nadermx•11m ago•0 comments

Social media is populist and polarising; AI may be the opposite

https://www.ft.com/content/3880176e-d3ac-4311-9052-fdfeaed56a0e
1•malloryerik•12m ago•1 comments

Show HN: Anamnesis – Open-source 4D strategic memory engine for AI agents

https://github.com/gayawellness/anamnesis
1•gayawellness•12m ago•0 comments

Pretext Demos

https://chenglou.me/pretext/
1•vinhnx•14m ago•0 comments

Alzheimer's disease mortality among taxi and ambulance drivers (2024)

https://www.bmj.com/content/387/bmj-2024-082194
2•bookofjoe•17m ago•0 comments

-

https://github.com/d0nk3yhm/pbix-mcp
2•d0nk3yhm•21m ago•0 comments

Translating non-trivial codebases with Claude

https://blog.danieljanus.pl/2026/03/26/claude-nlp/
1•vinhnx•25m ago•0 comments

Catching crumbs from the table by Ted Chiang (2000) [pdf]

https://gwern.net/doc/fiction/science-fiction/2000-chiang.pdf
2•sendes•27m ago•1 comments

The Opt Out Project

https://www.optoutproject.net/
3•billybuckwheat•29m ago•0 comments

BubbleWrap your dev env and agents

https://dpc.pw/posts/bubblewrap-your-dev-env-and-agents/
1•vinhnx•31m ago•0 comments

A simple explanation of the key idea behind TurboQuant

https://old.reddit.com/r/LocalLLaMA/comments/1s62g5v/a_simple_explanation_of_the_key_idea_behind/
1•thunderbong•35m ago•0 comments

IN Event of Moon Disaster [pdf]

https://www.archives.gov/files/presidential-libraries/events/centennials/nixon/images/exhibit/rn1...
1•interweb•38m ago•0 comments

Anthropic's Mythos leak: 3k files in a public CMS, and what the docs revealed

https://medium.com/ai-advances/anthropic-claude-mythos-leak-analysis-b77c1b304eb8
4•Aedelon•43m ago•0 comments

Git City – Your GitHub as a 3D City

https://www.thegitcity.com
2•fcoury•46m ago•0 comments

Seattle opens first light rail across floating bridge

https://www.fox13seattle.com/news/seattle-train-floating-bridge
2•whiskey-one•47m ago•0 comments

Ask HN: How are you keeping AI coding agents from burning money?

2•bhaviav100•48m ago•1 comments

What's Banned on Your Block?

https://www.strongtownschicago.org/whats-banned-on-your-block
1•animal_spirits•50m ago•0 comments

Motorola 88000

https://en.wikipedia.org/wiki/Motorola_88000
3•doener•51m ago•1 comments

We spent 2 hours working in the future

https://metr.org/notes/2026-03-19-org-uplift-game/
2•gmays•56m ago•0 comments

Dashboards Are Already Dead

https://joshsymonds.com/blog/dashboards-are-already-dead/
2•Veraticus•57m ago•1 comments

Liberate Your OpenClaw

https://huggingface.co/blog/liberate-your-openclaw
1•cezarvil•57m ago•0 comments

Milawa on Jitawa, a Verified Theorem Prover

http://lambda-the-ultimate.org/node/4464
1•poppingtonic•1h ago•0 comments

Codex Use Cases

https://developers.openai.com/codex/use-cases
1•AnhTho_FR•1h ago•0 comments

How Japan's Shiitake mushrooms fuel a $740M global Shiitake industry [video]

https://www.youtube.com/watch?v=XuJ5HsV8mlQ
1•teleforce•1h ago•0 comments

OpenClaw Is LangChain 2.0

https://justinflick.com/2026/03/28/openclaw-is-langchain-2.html
2•pamplemeese•1h ago•0 comments

Linux 7.0-Rc6 Bringing a Lot of Audio Quirks / Fixes

https://www.phoronix.com/news/Linux-7.0-rc6-Many-Audio-Fixes
2•Bender•1h ago•0 comments

Saudi Pipeline to Bypass Hormuz Hits 7M Barrel Goal

https://www.bloomberg.com/news/articles/2026-03-28/saudi-pipeline-that-bypasses-hormuz-hits-7-mil...
6•geox•1h ago•0 comments

Ghst – an experimental, full-featured CLI for managing Ghost CMS sites

https://github.com/TryGhost/ghst
1•Curiositry•1h ago•0 comments

AI adoption problem isn't tech debt

https://dheer.co/ai-adoption-operating-model/
1•bushido•1h ago•0 comments

Woman visiting ER for back pain shocked after doctor suggests euthanasia

https://www.dailymail.co.uk/news/article-15687817/woman-euthanasia-pain-doctor-offer.html
4•Bender•1h ago•0 comments
Open in hackernews

South Korea Mandates Solar Panels for Public Parking Lots

https://www.reutersconnect.com/item/south-korea-mandates-solar-panels-for-public-parking-lots/dGFnOnJldXRlcnMuY29tLDIwMjY6bmV3c21sX01UMU5VUlBITzAwMFZKRjFZQQ
100•_____k•1h ago

Comments

verelo•1h ago
Great initiative.

However I am curious about the "NO USE FRANCE" text at the end of this article. Is this a licence issue or something? Would love it if someone with insight would be able to comment!

jjmarr•52m ago
It might be because there's a person in the photo, and France is very strict on photographing people.

https://commons.wikimedia.org/wiki/Commons:Country_specific_...

In terms of the formatting/brevity, Reuters was originally a wire service. They'd cover news in foreign locations and send it by telegraphic wire to local newspapers that would license the content.

Telegraphs charged by the word and didn't have letter case. Cryptic in-band signals like "NO USE FRANCE" are a relic of that time.

Since the link OP posted is to the B2B part of Reuters, I'm assuming they still haven't modernized this system.

GuB-42•18m ago
It doesn't seem to be about photographing people, other pictures don't feature people and still have the "NO USE FRANCE" tag. It seems like all pictures by Chris Jung have the "NO USE FRANCE" tag.

My best guess is that Chris Jung has some kind of an exclusivity contract for publishing in France. Looking at his website, he publishes in "Paris Match", a French magazine, so it may be related.

jjmarr•14m ago
That makes more sense.
jld•1h ago
It seems inefficient to put solar panels over parking areas as it requires significant amount of structure which costs a lot more than shade it creates is worth. Especially compared to how much less structure is needed on more remote solar farms.

Maybe I'm just using American mindset where there is lots of open land that is good for solar generation? Perhaps not true in Korea?

greyb•1h ago
Building solar panel installations in remote locations still requires linking that back to the main grid, and all the in-between infrastructure needed to transform and transmit that power. Building it in an urban location allows you to tap into the existing grid without much added public investment, similar to how some power grids will purchase power from homeowners as an added incentive for doing a home solar install.
vaughnegut•1h ago
Something like 70% of the Korean peninsula is mountainous, and a lot of the space between mountains is taken up by cities and farms. This puts flat land at a bit of a premium
Aurornis•1h ago
In a city the best place to put them first is roof tops. Rooftop solar has minimal structural requirements relative to parking lot canopies.

I think this might be partially an indirect tax on parking lots inside a dense city. It raises the cost of using land for parking, but does so in a way that provides shade and clean energy at the same time.

scottyah•48m ago
Ground level solar in a big city doesn't make much sense, they'll be getting a lot of shade- which significantly reduces the power generated. They've made new panels that are better with partial shade, but it's still crazy.
jyounker•36m ago
Most parking lots in big cities are not surrounded by high-rises.
dgoldstein0•3m ago
Well also when they are they are small parking lots. This regulation specifically is for big public parking lots.

Also the "surrounded by high rises" locations are more likely to be built as parking garages in the first place.

stackskipton•1h ago
South Korea is pretty mountainous so yes, available land is much less compared to America where we have square miles upon square miles of open land. South Korea is little less the size of Kentucky.
jmward01•56m ago
It seems inefficient to not put solar panels over a parking lot. I'm not sure how shade is a major consideration here or how light weight solar panels are a large expense compared to the cost of space in a city. Parking garages are often net negatives to cities and parking lots are generally major negatives to cities since they drive density down and reduce foot traffic (which reduces economic churn). At least this way the city gets another small use out of that area in the form of some local electricity generation. Density and variety of use are major factors in urban health.
colechristensen•49m ago
It adds utility to an arguably less useful use of space (shut up, I used use two words in a row and twice here), minimizes transmission costs and losses (the power is needed right there in the parking lot or where the people parking there are going to), and doesn't displace other land use (farms or nature).
michaelt•46m ago
South Korea has a population density of 507/km² [1]

For comparison, the San Francisco Bay Area has a population density of 430/km² [2]

I doubt they have vast tracts of undeveloped land. And while solar panels can replace agricultural land or wooded areas, doing so isn't always a big political win.

[1] https://en.wikipedia.org/wiki/South_Korea [2] https://en.wikipedia.org/wiki/San_Francisco_Bay_Area

bikelang•28m ago
South Korea has tons of undeveloped land. Just look at an aerial imagery map. It’s just that it’s quite mountainous and heavily forested. (Not that I think we should tear down the forests for this - surface parking lots are already an inefficient use of space)
jyounker•41m ago
I'm an American, and it seems like a great use of land to me. This sort of a policy is particularly sensible in areas where it's hot, and there are extensive parking lots next to places that are mostly active during the day.

Instead of just having a heat island, you generate power to run AC in the associated buildings, and you also get shade for the parked cars.

filoleg•32m ago
I recently was at the Vegas airport, and what struck me was the parking lot.

It was the same parking lot I saw many years ago. But this time, instead of feeling sorry for the owners of the cars that were obviously getting cooked up, that whole are was shaded in bajillion solar panels.

It seemed like such an obvious win-win for everyone, I expect it to catch on fairly quickly.

thelastgallon•39m ago
Yes, build far away and wait 30 years for transmission lines to be built or to be connected to the grid.

Building where people live means (near) zero transmission infrastructure.

testing22321•1h ago
This is the kind of thing that every western ( or “rich” ) government should have mandated years ago.

The best time was years ago, the second best time…

We see the results of initiatives like this in BC, Canada. About 10 years ago they passed a law that when any government building is getting a renovation of any kind, public EV chargers must be built in the parking lot.

The result is that every single town without exception has EV chargers now. The future is coming, despite some doing their best to slow it down.

granolacowboy•1h ago
Even if no more energy infrastructure is destroyed from the moment of this post, the Iran war will do more to speed this up than decades of science, I think.
tbrownaw•51m ago
> This is the kind of thing that every western ( or “rich” ) government should have mandated years ago.

If it's cost effective there's no need to mandate it.

If it's not cost effective but you want it anyway, you can explicitly subsidize it instead of mandating it.

Does South Korea do mandated parking minimums like I hear is common here in the US? That would tell whether this is a tax on business property in general, or a tax on driving / personal mobility specifically.

jmye•41m ago
> If it's not cost effective but you want it anyway, you can explicitly subsidize it instead of mandating it.

Or, as happened in actual reality, you tell the owners they have to put it in place. Imagine that - the two weirdly specific things you came up with aren’t actually the only two options. Who would’ve thunk.

jonhohle•40m ago
Thinking about it from an individual (not business) point of view, the upfront capital won’t be repaid for 10-years or more and does little to change the value of the lot. The lot value is probably most dictated by location and capacity. Solar does nothing to affect location, and may even harm capacity. Parking lot customers might choose a lot of its shaded, but ultimately it’s a captive market due to location.

If I owned the lot, I could take on no-risk (which may be why the lot was purchased to begin with), or take on a 6-figure investment that could bankrupt me if the demand for the lot vanished. (I suppose in that case you’d at least be making money on selling power back to the grid.)

hoppyhoppy2•6m ago
Do we explicitly subsidize the kitchen equipment restaurants need in order to comply with mandatory food-safety regulations? How about the cost of mandatory sinks in bathrooms? Some things are just considered the cost of doing business.
Aurornis•1h ago
The solar covered parking lots near me are great because they also serve as cover for your car when it’s hot and sunny.

It’s not the most cost effective way to install solar, though. A tall structure designed to put the panels high up in the air and leave a lot of space for cars is a lot more expensive than normal rooftop solar or even field setups. This is basically a way to force some of the cost of clean energy as a tax on parking lots. Which may not be a bad thing for dense cities where parking lots have their own externalities on the limited available land.

eclipticplane•1h ago
A better version for shade and city beautification is to force trees around/within the parking lot.
yearolinuxdsktp•39m ago
Tree shade means bird poop danger.
ProllyInfamous•36m ago
I recently built a 400sqft porch on my semi-urban duplex.

Two birdnests have set up shop, both in my rafters (one on CCTV). My ceilinghooked bicycle will be decommissioned for this summer's nesters.

Unfortunately, being the only porch/shade: the cats are also prowling... figuring out the rooftop connections.

#PoopPorch2026

zzzoom•26m ago
Imagine considering some bird poop staining the paint dangerous instead of the air pollution that's slowly killing you.
XorNot•24m ago
Car exhaust is CO2 and water, it's not killing anyone.
defrost•17m ago

  If gasoline engines burned their fuel as efficiently as possible, they would produce three by-products: water vapor (H2O), carbon dioxide (CO2) and nitrogen (N2). 

  Unfortunately, engines do not run perfectly, and as a result, they also produce three by-products commonly referred to as the "terrible trio" of automotive pollutants. This trio includes the following:

  *  Carbon monoxide (CO) – An odorless, tasteless, poisonous gas, carbon monoxide can cause a variety of health problems and even death. Many urban areas experience critically high levels of carbon monoxide, especially during the cold winter months when engines take longer to warm up and run cleanly

  *  Unburned hydrocarbons (HC) – Responsible for causing a variety of respiratory problems, unburned hydrocarbons can also cause crop damage and promote the formation of smog

  *  Oxides of nitrogen (NOX) – Like unburned hydrocarbons, oxides of nitrogen cause respiratory problems and promote the formation of smog
* https://www.walkerexhaust.com/support/exhaust-101/exhaust-ga...
ceejayoz•17m ago
Take a nice big sniff. CO2 and water are odorless.
kulahan•7m ago
Have you ever seen an inversion? It’s crazy to imagine anyone who has, to end up thinking “maybe that shit-brown cloud stuck over the city is fine”.
Kodiack•38m ago
I love seeing trees in more places, but for parking lots in particular they do have some downsides compared to solar panels. They often require more space; they attract birds that that poo on vehicles; and there’s a higher risk of collateral damage during windstorms. Not to mention that solar panels directly produce electricity, of course.

We absolutely should see more trees in many cities, but they introduce their own challenges in parking lots, especially if they’re placed retroactively.

jltsiren•33m ago
Trees can cause a lot of trouble if you don't give them enough space to grow. "Enough space" depends on the kind of the tree, but it's typically similar to a parking space. You can mandate trees, but then you'll get less parking.
pfdietz•37m ago
I wonder if this will make it preferable to build parking structures rather than parking lots.
ceejayoz•18m ago
That is definitely not going to be easier or cheaper.
pfdietz•11m ago
Yes. I looked it up and I agree.
hibikir•4m ago
The lot is always cheaper, as long as the land is cheap. And in most of the US, even land that isn't all that cheap is often best left as a parking lot, economically: You can easily speculate with a parking lot with minimal investment, as the taxes for the empty lot are often low. See all the midwestern cities whose downtowns are 30-40% surface parking.

There are all kinds of bad externalities caused by seas of asphalt that is unused 95% of the time, but few countries are all that interested in using any mechanism to make the property owner pay for them.

userbinator•1h ago
Authoritarian Asian countries being authoritarian as usual.

Wouldn't mind putting up panels if I could sell and use the power. But fuck governments telling property "owners" what they can or can't do.

shaky•59m ago
A mandate for renewable energy is authoritarian now? What? This is a great initiative.
tbrownaw•48m ago
The key is in the presence of the word "mandate".
itsmek•15m ago
Authoritarianism is a form of government characterized by highly concentrated power, limited political pluralism, and the suppression of dissent, often enforced by a charismatic leader or elite group .

A mandate is an authoritative command, order, or authorization to act, typically given by a higher authority, such as voters, a court, or a governing body .

So in the sense that a mandate is passed by government, and governments are sometimes authoritarian? If your logic is stronger than that you'll need to explain it to me. I'm not saying Asian countries are not authoritarian, I take no stance on that, I just genuinely don't understand how mandates imply authoritarianism.

Ancapistani•44m ago
Yes, it is.
briandw•34m ago
The sensibility of a policy and the power dynamics of it’s application are orthogonal.
jmward01•43m ago
The idea of an 'owner' doing whatever they want on 'their' property is ridiculous. They bought that land with restrictions and an understanding that it was part of a regulatory framework. Should an 'owner' be able to set up an industrial chemical plant in the middle of a city without any regulation? How about an open pit mine? A gun range with no regulation? Should I be able to create a massive speaker system pointed at your house next door to drive you away with no consequences? All actions are actually interactions. Everything someone does on their property has impacts to others. We give 'owners' a lot of leeway but that shouldn't be unlimited. Requiring things like solar on roofs, or gutters on roofs, or restricting roof uses, etc etc are all valid concepts. It can, and should, be debated how far those regulations should go but 'get your government off my land' is never a good argument.
jyounker•34m ago
Every government tells property owners what they can and cant't do. Find one that doesn't, and you'll have found a failed state.
pyaamb•1h ago
power right where its needed, plus shade for your vehicle. this is the way.
OsrsNeedsf2P•58m ago
If you have 80 or more slots, you have to generate at least 100 KW.

As someone who has lived in Korea, this will be great for the apartment complex parking lots.

That said, I don't think it's aggressive enough. Why not scale with the number of parking spaces?

OptionOfT•46m ago
This is a great idea, whether full of cars or empty, a lot of heat is absorbed by the parking lots. Just covering them means the concrete below cannot heat up.
3eb7988a1663•32m ago
I was going to say, there must be some research on how much/little this impacts the urban heat island effect.
joecool1029•45m ago
Maybe some WX nerds on HN can answer, but uh... would this help with reducing convection cells that appear above large parking lots? I can look at radarscope during summer and see them roiding up over really large parking lots in my region. Do solar panels help reduce this 'heat island' effect?
jojobas•40m ago
Solar Freaking Roadways!
glouwbug•37m ago
Well, destroying the entirety of the Gulf certainly is one way to make the world go renewable. Many are going to struggle, though
luxuryballs•37m ago
well it’s certainly better than covering farmland with them like has been happening around here
watersb•35m ago
In Phoenix, Arizona, there are solar panels over the parking lots at since of the grocery stores. Makes a huge difference in survivability when you get back to the car.

(Without huge infrastructure dedicated to car welfare, Phoenix is uninhabitable.)

reactordev•25m ago
This is sane and sensible and honestly all buildings should have some shape of panels on them…
cyberrock•19m ago
I believe solar carports of that size need to be constructed with steel, and South Korea has a significant steel oversupply issue now, so this provides a way to keep the industry going.