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Show HN: Todoglow – Keyboard-first todo app for macOS with MCP support

1•4esop•44s ago•0 comments

Phishing AI Agents

https://www.zansara.dev/posts/2026-03-04-phishing-ai-agents/
1•zansara•1m ago•0 comments

Finding the Single Number with XOR

https://www.jamessimas.com/posts/2026/xoring-numbers/
1•surprisetalk•2m ago•0 comments

AI Twitter's favourite lie: everyone wants to be a developer

https://www.joanwestenberg.com/ai-twitters-favourite-lie-everyone-wants-to-be-a-developer/
3•surprisetalk•2m ago•0 comments

Analytic Fog Rendering with Volumetric Primitives

https://matejlou.blog/2025/02/11/analytic-fog-rendering-with-volumetric-primitives/
1•surprisetalk•2m ago•0 comments

Interruptly: Habit Tracker and Behaioural Pattern Awareness iOS App

https://apps.apple.com/us/app/interruptly-habit-tracker/id6759235005
1•Dunsinagb•3m ago•1 comments

Show HN: Attn – Markdown viewer and editor in a <20MB binary (Rust)

https://github.com/lightsofapollo/attn
1•lightsofapollo•4m ago•0 comments

Show HN: LiberClaw, deploy AI agents that run 24/7 on their own VMs

1•moshemalawach•5m ago•1 comments

ActivityPub for WordPress 8.0.0 – Smash That Like Button

https://activitypub.blog/2026/03/05/8-0-0-smash-that-like-button/
1•riffraff•6m ago•0 comments

Show HN: OmoiOS–190K lines of Python to stop babysitting AI agents (Apache 2.0)

https://github.com/kivo360/OmoiOS
2•kanddle•7m ago•1 comments

Show HN: AgnosticUI – A source-first UI library built with Lit

https://www.agnosticui.com/
2•roblevintennis•8m ago•0 comments

Show HN: ConvertlyAI – Format raw transcripts into 10 social assets

1•ConvertlyAI•8m ago•0 comments

Explore Financial Disclosures from President Trump and 1,500 of His Appointees

https://projects.propublica.org/trump-team-financial-disclosures/
5•ams1•8m ago•0 comments

Cancer blood tests are everywhere. Do they work?

https://www.nature.com/articles/d41586-026-00661-2
1•bookofjoe•9m ago•1 comments

Congress puts the ISS on life support until 2032, orders Moon base plan

https://www.theregister.com/2026/03/05/iss_extension/
2•voxadam•9m ago•0 comments

Show HN: A Linter for Skill.md Files

https://github.com/tilework-tech/nori-lint
2•theahura•9m ago•0 comments

Wikipedia in read-only mode following mass admin account compromise

https://www.wikimediastatus.net
4•greyface-•10m ago•1 comments

Show HN: hugpoint.io – Find the fairest meeting spot for a group

https://hugpoint.io/
1•prunax•12m ago•0 comments

Show HN: ExtraSuite – pull / push for Google Drive

https://github.com/think41/extrasuite
1•ksri•13m ago•0 comments

FCC Chair to Europe: If You Restrict US Satellite Providers, We'll Ban You Here

https://www.pcmag.com/news/fcc-chair-to-europe-restrict-us-satellite-providers-well-ban-you-in-us
1•msolujic•13m ago•0 comments

Bumper-Sticker Computer Science

http://quotes.cat-v.org/programming/bumper-sticker-computer-science
1•Spide_r•13m ago•0 comments

Show HN: I built a simple meditation app because I was tired of subscriptions

https://apps.apple.com/us/app/pure-meditate/id6759008961
1•PureMeditate•13m ago•1 comments

Show HN: Make beats, produce music from the command line

3•lmohseni•13m ago•0 comments

The Pentagon-Anthropic feud is quietly obscuring the real fight over military AI

https://www.fastcompany.com/91502340/the-pentagon-anthropic-feud-is-quietly-obscuring-the-real-fi...
2•johnshades•14m ago•0 comments

Show HN: Reduce LLM token use by ~30% with this MCP/CLI tool(Claude benchmarked)

2•jahala•15m ago•1 comments

Elo-Driven Development

https://faizank.substack.com/p/elo-driven-development
1•fazkan•16m ago•1 comments

Kristi Noem Misled Congress About Top Aide's Role in DHS Contracts

https://www.propublica.org/article/kristi-noem-dhs-misled-senate-judiciary-corey-lewandowski-cont...
4•SilverElfin•16m ago•1 comments

Evervault raises $25M to build the clearinghouse for sensitive data

https://evervault.com/blog/series-b
2•ShaneCurran•17m ago•0 comments

Re-exposure to reward re-evaluates related memories

https://www.sciencedirect.com/science/article/pii/S0960982225015969
1•PaulHoule•17m ago•0 comments

HATEOAS Works with an LLM in the Mix

1•charlieflowers•17m ago•0 comments
Open in hackernews

Rising carbon dioxide levels now detected in human blood

https://phys.org/news/2026-02-carbon-dioxide-human-blood.html
80•wkrsz•1h ago

Comments

indoordin0saur•1h ago
This actually has me just as concerned as rising temperatures. And its a pretty hard thing to argue against, no matter your politics. Elon even brought it up when he did that interview with Trump in late 2024 to convince him that we should still care about CO2 levels in the atmosphere, even if you think the threat of a changing climate is overblown. Trump really had no response.
Tade0•21m ago
USA (along with the rest of the western world) is a huge cumulative emitter:

https://ourworldindata.org/contributed-most-global-co2

But a distant second in per year emissions:

https://www.worldometers.info/co2-emissions/co2-emissions-by...

The EU, not listed here, sits between the US and India at about 3.05 billion tonnes.

It's all up to China, which took over a huge chunk of the world's manufacturing. And all up to us, buying Chinese products.

ThomW•1h ago
"Yes, the planet got destroyed. But for a beautiful moment in time we created a lot of value for shareholders.“
toomuchtodo•1h ago
Clean tech will save the day (low carbon generation, batteries, electrification trajectories and rate of change, broadly speaking), but the global fossil industry will need to be dismantled faster than some will like. It is a matter of survival, not politics or economics. My hunch is there are not many globally who want to suffocate while trying to exist for shareholder value.
lapcat•55m ago
> My hunch is there are not many who want to suffocate while trying to exist for shareholder value.

Have you... read the news lately? You say it's not a matter of politics, but the politicians are absolutely trying to roll back the clock, push dirty tech, eliminate all environmental protections and regulations.

embedding-shape•53m ago
> but the politicians are absolutely trying to roll back the clock, push dirty tech, eliminate all environmental protections and regulations

Yes, in one country who seems hellbent on destroying itself.

But looking globally, more and more countries seems to get it at this point, and at least move in the right direction, compared to others. The others will make themselves irrelevant faster than the others can reach a future without fossil fuels.

lapcat•47m ago
> Yes, in one country who seems hellbent on destroying itself.

One of the largest countries in the world, measured by size, population, economy, and military. If you hadn't noticed, the US can do a lot of damage to the rest of the world all by itself. And pollution does not respect borders. Global warming does not respect borders.

tw04•47m ago
You do us all a disservice by saying “the politicians”. The REPUBLICANS are attempting to ignore reality and burn more fossil fuels. Nobody else in America. Name the problem, otherwise you’re implying it’s a bipartisan effort.
lapcat•45m ago
Obama takes credit for U.S. oil-and-gas boom: ‘That was me, people’ https://apnews.com/article/business-5dfbc1aa17701ae219239caa...

You have to be born yesterday to believe that Democratic leaders haven't merely hand-waved and virtue-signaled about global warming for decades. I realized this back in the 1990s.

Democrats have superior rhetoric, and they are less openly hostile, but their long record of doing nothing to help is unsurpassed. They will fiddle while Republicans burn Rome. And don't forget that Joe Manchin for example was a Democrat, one who dominated Democratic policy during the Biden administration.

M3L0NM4N•35m ago
We need to push for clean tech obviously. I disagree with Republicans blocking wind farm construction and rolling back regulations, but American energy independence is important for national security, which is a shorter term issue than climate change. And developing more domestic clean energy helps with that as well.
HoldOnAMinute•33m ago
Exactly. As a Democrat my eyes were opened when I saw the senior leadership do absolutely nothing to impede Trump other than form a strongly worded tweet.
knowaveragejoe•29m ago
You do the people causing this problem a great service with false equivocations like this. It is clear one group would prefer us to ignore the problem and do nothing at all - in fact encourage the problematic behavior - and the other would very much like to take action on the issue if they had the political power.
lapcat•22m ago
> the other would very much like to take action on the issue if they had the political power.

They had political power! During the Biden administration, during the Obama administration, during the Clinton administration.

Al Gore is a famous environmentalist... for making a movie after he was out of power. What the hell did he do for the environment when he was literally in the Oval Office, at the side of the President?

obsidianbases1•54m ago
Where can I find some of that optimism in 2026?
toomuchtodo•50m ago
https://ember-energy.org/focus-areas/clean-electricity/

https://ember-energy.org/data/china-cleantech-exports-data-e...

https://ember-energy.org/latest-updates/global-solar-install...

https://ember-energy.org/latest-insights/solar-electricity-e...

https://ember-energy.org/latest-insights/indias-electrotech-...

https://ourworldindata.org/grapher/installed-solar-pv-capaci...

https://ourworldindata.org/electric-car-sales

Trajectories are favorable and compelling. We can go faster though. “You can just do things.”

throawayonthe•54m ago
that very much is a matter of politics, people should stop being afraid to acknowledge it

real politics are often concerned with survival

tw04•50m ago
I think you’re grossly underestimating how much the average American can deny with the assistance of social media.

The number of people I personally know who thought the country was going to end on J6 who now call the entire thing a “political hoax” breaks my brain.

Not to mention the endless posts about “where are all the people claiming COVID was so deadly now?” Who literally completely ignore the MILLIONS of deaths caused by COVID…

Until these people have their own son or daughter killed by X - they’ll happily claim it’s not actually a problem. Or find something completely unrelated to blame instead if it doesn’t align with their Twitter feed.

toomuchtodo•7m ago
https://www.politico.com/news/2026/02/27/solar-powers-newest...

https://www.pewresearch.org/2025/11/05/impact-of-climate-cha...

https://www.pewresearch.org/2025/08/19/global-climate-change...

https://www.pewresearch.org/science/2024/12/09/how-americans...

https://www.pewresearch.org/short-reads/2023/08/09/what-the-...

lenerdenator•47m ago
I'd be willing to bet they go the Spaceballs route and make cans of oxygen a must-have item before they cut the emissions.
HoldOnAMinute•32m ago
Perfect opportunity for a subscription. Amazon Oxygen. Subscribe and Save!
boringg•36m ago
Nuclear will save the day in combination with clean tech.

Clean tech on its own is too slowly to be meaningfully impactful by the time we need it.

toomuchtodo•13m ago
It takes ~ten years to build a nuclear generator. In that time, 10TW of solar PV will be deployed at current deployment rates, roughly half of global electricity generation currently.
pocksuppet•35m ago
But everyone wants everyone else to suffocate while delivering shareholder value for themselves. Classic Prisoner's Dilemma.
AlexandrB•30m ago
> My hunch is there are not many globally who want to suffocate while trying to exist for shareholder value.

I hate this kind of hyperbole because it obscures the real dangers. No one is going to suffocate any time soon. Atmospheric CO2 is around 450ppm. The CO2 in a meeting room of a typical office can easily reach 1500ppm or more[1]. Is everyone in meeting rooms "suffocating"?

[1] https://www.popsci.com/conference-carbon-dioxide-tired-offic...

johnboiles•29m ago
Yes in one way or another
johnboiles•26m ago
Also, these CO2 canaries are neat. We got one for our office https://a.co/d/02EKUci9
goodpoint•17m ago
I think you are being downvoted because people only skim "Clean tech will save the day" without reading the whole text.
davidw•55m ago
And parking is abundant!
amelius•48m ago
If you have the money for it.

https://easypark.rs/news/cheapest-countries-to-park-in/

davidw•40m ago
In the US, people bend over backwards to ensure that there is free storage for automobiles. And that housing and businesses are forced to include that expensive (parking spots can run into the 10's of thousands of dollars for some kinds of construction) amenity. Fortunately that's starting to change, but it is a big battle. And meanwhile, CO2 levels keep rising.

( This book goes into detail but is quite readable: https://www.henrygrabar.com/paved-paradise )

epistasis•14m ago
More specifically, free for the person parking.

All the rest of society pays massive amounts in construction costs:

> adding tens of thousands of dollars per housing unit and, in some cases, increasing total construction costs by more than 50%.

This is from a recent update to Donald Shoup's estimates from the classic "The high cost of free parking": https://escholarship.org/uc/item/9f88x32n

wise_young_man•21m ago
And in many places makes more than minimum wage.
slibhb•42m ago
People say shit like this as if fossil fuels aren't the single biggest reason we aren't starving and living in thatched huts.
pluralmonad•34m ago
Never heard this take before. Care to elaborate? It seems like crop failure and disease are the typical causes of food shortages, if not outright human logistical failures. Sounds like saying pouring gasoline on a tiny fire is the only reason we aren't cold (ignoring that more firewood would be the solution). An unsustainable solution is not in-fact a good solution. So if your assertion is correct, then we should all prepare for our thatched huts in which we will starve.
Krutonium•25m ago
I think their point is more along the lines of the energy availability of Fossel Fuels allows for the Mass Farming and Construction that we do, not so much that we can pour it on a fire in place of wood.
jbboehr•24m ago
> Green Revolution techniques also heavily rely on agricultural machinery and chemical fertilizers, pesticides, herbicides, and defoliants; which, as of 2014, are derived from crude oil, making agriculture increasingly reliant on crude oil extraction.

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

slibhb•24m ago
You clearly haven't given a lot of thought to questions like "where does all this cheap food/housing/heating come from?"

The fact that fossil fuels -- since their mass adoption in the late 19th century -- are the single largest cause of improved living conditions is standard economic history.

> An unsustainable solution is not in-fact a good solution.

It was a perfectly good solution. It replaced wood fires which are clearly worse. Coal was great until natural gas became available. As solar/wind/nuclear become abundant, they are conintuing to displace fossil fuels.

microsoftedging•33m ago
Op was referencing a comic [0]

Furthermore, yes, getting to the point where we're no longer starving and in thatched huts did require fossil fuels, but now we know what they do, and that they're actively having an effect on the environment, and clearly us, are we so stuck in our ways we can't change our actions to secure a life for those that come after?

[0] https://www.bureauofinternetculture.art/memes/shareholder-va...

slibhb•21m ago
What difference does it make what they're referencing?

I'm glad we agree that fossil fuels were necessary. It has nothing to do with "shareholder value" -- it has to do with minimizing human suffering.

Also, it's noteworthy that US emissions peaked in 2007. We're down ~20% since then. The world is absolutely addressing climate change, and the worst case scenarios have already been avoided. Faster would be better but we're moving reasonably fast.

ChromaticPanic•4m ago
Consumerism is the problem. If fossil fuels were used on necessities sure. Single use plastics, individually packaged consumables, planned obsolescence are examples of things that are not necessary. These examples have all to do with shareholder value.
wat10000•27m ago
Two things can both be true. Fossil fuels greatly improved quality of life for a large number of people in the past few centuries. And their continued use on a massive scale now threatens to hurt a lot of people.
CursedSilicon•25m ago
I mean. At least we'd still be living as a species
slibhb•23m ago
Oh we're not living? Am I a ghost typing this? Are you?
pjc50•5m ago
All these things can be true at the same time:

- fossil fuels have provided huge benefits

- the accumulation of CO2 in the atmosphere is causing gradually increasing problems that will eventually become severe in some places

- a lot of people made a lot of money along the way

- at some point, some people chose to lie about the problems

- lying about the problems is morally wrong

- the transition off fossil fuels will be expensive

- that is not a sufficient reason not to do it

throw0101a•19m ago
For those unaware, this is the dialogue/caption in Tom Toro's 2012 New Yorker cartoon:

* https://www.newyorker.com/cartoon/a16995

* https://tomtoro.com/cartoons/

* https://condenaststore.com/featured/the-planet-got-destroyed...

gcanyon•58m ago
Higher carbon dioxide makes us dumber: https://pmc.ncbi.nlm.nih.gov/articles/PMC7229519/

I wonder how long before in-home CO2 extraction becomes a thing.

amelius•47m ago
We'll have AGI not because the AI becomes smarter but because humans become stupider.
kibitzor•47m ago
CO2 increase of 400ppm decreases cognitive function by >20% [1]

I frequently send this medium article [1] to friends + family for a basic dive into how CO2 affects our thinking and abilities at various levels in common areas.

The article cites a study [2] which graphs cognitive score for different activities at different CO2 concentrations. Each activity's cognitive score is worse at higher CO2 concentrations, EXCEPT "focused activity" or "Information search" (up to some point)

[1, note it is from 2016] https://medium.com/@joeljean/im-living-in-a-carbon-bubble-li... [2]https://pubmed.ncbi.nlm.nih.gov/26502459/

boringg•34m ago
That article really needs a pre-and post fixing his house.

I find it hard to believe that stat you provide -- seems like a bit of a shiny lure without much merit.

Maybe if CO2 PPM wasn't so high I could make sense of it.

eitau_1•12m ago
I've started questioning this premise given that concentration of CO2 in the lungs (while resting) never falls below 10000ppm (I'm possibly underestimating this number).

Though I'm not excluding the possibility that indoor CO2 concentration strongly correlates with cognitive underperformance, which may be caused by other compounds emitted by human body.

HoldOnAMinute•30m ago
It will be mandated by the state of California for new homes and office buildings.
RobGR•20m ago
I've thought about making a C02 scrubber for indoor use. The simplest way, using commercial lime, would mean replenishing a consumable to keep it going. The C02 scrubbers that acquarium owners use also don't seem to be able to be regenerated.

I think it would be interesting to see what effect, if any, an indoor C02 level of near 0 would have on humans and mammals. Because your blood has to stay in a narrow PH range, and C02 is part of maintaining that, I wouldn't presume it would be good.

I think a small desktop C02 scrubber might have a market in the same demographic that pays for air ionizers, de-ionizers, HEPA filters and incense burners.

Karawebnetwork•17m ago
The high school my friend's kids attend installed CO2 sensors during the pandemic as an indirect way to measure airflow.

It turned out the building had been sealed extremely tightly to keep out the winter cold and because it is old, it does not have a proper HVAC system.

They discovered that CO2 levels stayed around 1200 ppm throughout the entire winter, sometimes even higher. This had likely been the case for decades.

It is a school in a small, low‑income town. I cannot help wondering how many kids were labeled as underperforming when they were actually struggling with the effects of chronically elevated CO2 levels.

stuaxo•58m ago
Plants grow faster (but not better) with more Co2 I wonder if this could be related to global obesity ?
tonyedgecombe•52m ago
If we were only eating plants then there would be no obesity crisis.
zdragnar•36m ago
You'd be amazed at what you can do to yourself with enough fried potatoes and refined sugar.
zdragnar•38m ago
There's an oversimplified assumption here that the plants will be less nutritious, and so people will eat more calories to make up for the deficit.

I suspect the presence of protein, fats and sugars influence the hormone production regulating appetite far more than these changes account for. I would expect the same health issues to be affecting other animal species in just as drastic a measure as humans if it were true, and also that global obesity happened at a more uniform pace rather than coinciding with the introduction of modern western eating habits and lifestyles.

hxorr•31m ago
It's not just an assumption, there is research that shows this.

For example: https://www.scientificamerican.com/article/as-co2-levels-ris...

More specifically, yes, protein content decreases with rising CO2 levels. Maybe not enough to cause obesity on its own, but enough to be a compounding factor. Especially when your staple is, say, rice -- which is what the paper linked above looks at.

beejiu•36m ago
There is actually a hypothesis around this, but I don't think it's really been investigated: https://www.nature.com/articles/nutd20122
zug_zug•53m ago
> Humans evolved in an atmosphere containing roughly 280–300 ppm of CO₂. The average annual increase over the past decade has been about 2.6 ppm per year, with 2024 recording a 3.5 ppm rise.

So currently we're at 428 with 3.5 increase per year, yeah, that's scary if it doesn't slow down soon. Makes you wonder about what indirect health side-effects that could have on us.

lenerdenator•48m ago
I'm not a doctor, but I reckon it'd be same as any other case of carbon dioxide poisoning.
apopapo•30m ago
It makes us dumber and dumber.
pocksuppet•34m ago
Chronic exposure to CO2 levels above normal but below acute toxicity makes us dumber and more irritable.
Xiol•24m ago
Good job we can outsource all our thinking to an agent, now.
jmclnx•52m ago
Related but flagged link:

https://news.ycombinator.com/item?id=47202183

throawayonthe•49m ago
i wonder how much specifically indoor co2 levels and levels in dense/industrial affect it

also is it accurate to say that the blood co2 level is mostly a snapshot of the moment blood is drawn? or is it affected by longterm environment

hxorr•24m ago
This is compounded by modern lifestyle factors such as staying indoors more, keeping the windows closed to help the aircon/heating be more efficient, etc.

I think a lot of people would be surprised at the CO2 level in different indoor environments they spend time in each day.

NoSalt•13m ago
I recently purchased a small CO₂ detector off Amazon for the house and work. So far, so good ... hovering around 450ppm.
bob1029•6m ago
The human body has a fairly elegant regulation mechanism for handling variance in things like CO2:

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

I think regular exercise can help to offset some of the effects of rising CO2 levels. Clearly not an end game solution but it's something to consider because you do have control over this one.

piloto_ciego•5m ago
This is actually my theory on why we're behaving so stupidly right now en masse.

I'm sure there's other papers out there, but this is the first one for this post: https://www.sciencedirect.com/science/article/pii/S036013232...

Anyway, CO2 levels rise on planet earth, which cause indoor levels to rise too. As it turns out, because of ventilation and such, indoor levels are always a bit higher than outdoor levels. We cross some critical threshold and it gets really hard for us to take on complex cognitive tasks and make good decisions. This effects everyone equally more or less a bit worse at planning, a bit worse at solving problems, a bit worse and making critical decisions.

In the long run, planners make worse decisions, governments make work decisions, voters make worse decisions, students perform more poorly... you get the picture. Over 20 or 30 years these bad decisions start to ramp up into meaningful impacts on the world. At risk of "post hoc ergo proctor hoc"-ing myself, the tipping point for this being somewhere close to 400ppm would make a lot of sense, because people seem to be noticeably dumber some time after 2014 ish? Hard to really pin it down though, but once CO2 levels started to routinely crest over that 1000ppm it seems to me that the world started to get a lot crazier.

Like, we can blame it on one politician we don't like or another, or on bad economic forecasting, or on the schools, or on latent racism / sexism / whatever-ism. To be clear, those are all legitimate concerns, but at the end of the day we're just animals more or less stuck on this orb zipping through the cosmos and if we're suddenly unable to do high level reasoning as well wouldn't you expect to see an increase in "dumb ideas" being accepted?

chneu•2m ago
Reminder that an individual can cut their emissions by a staggering amount by just not eating meat/dairy.

Depending on how much you consume, you can cut your emissions by 50%!

Regenerative ranching is a lie and is more based in "vibes" and "energies" than science.