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Poor Sleep Tied to Alzheimer's Risk in Older Women

https://today.ucsd.edu/story/poor-sleep-tied-to-alzheimers-risk-in-older-women
1•gmays•41s ago•0 comments

What Is Happening to Publishing?

https://resobscura.substack.com/p/what-is-happening-to-publishing
1•benbreen•1m ago•0 comments

Small PR Rule Won't Survive AI

https://blog.quent.in/blog/2026/05/19/your-small-pr-rule-wont-survive-ai/
2•sylvainkalache•4m ago•0 comments

Zero: The Programming Language for Agents

https://github.com/vercel-labs/zero
1•afshinmeh•5m ago•0 comments

RISC-V and Floating-Point

https://fprox.substack.com/p/risc-v-and-floating-point
1•naves•6m ago•0 comments

Shhh, Don't Put Secrets in the Repo

https://andreasflakstad.no/posts/kimen/
2•andreasflakstad•6m ago•0 comments

CPU OP Cache Corruption

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7052.html
1•losfair•7m ago•0 comments

Ask HN: Is grpcurl home page compromised?

2•jicea•11m ago•0 comments

Plex's 200% Lifetime Pass price hike tries forcing users to another subscription

https://arstechnica.com/gadgets/2026/05/plexs-200-lifetime-pass-price-hike-tries-forcing-users-to...
3•ndr42•11m ago•1 comments

Show HN: Bevel – Guess the book from its opening passage

https://bevel.ink
2•knotalegend•11m ago•0 comments

Show HN: AgentKit SEO - a career context file that installs as agent skills

https://github.com/agentkit-seo/agentkit-seo
1•renatomignone•13m ago•0 comments

Show HN: YouTube MCP, give any AI agent access to YouTube

https://github.com/umbertotancorre/youtube-mcp
3•umbertotancorre•14m ago•0 comments

Biometric Surveillance in New York City

https://www.stopspying.org/biometric-map
2•raybb•15m ago•0 comments

Built DealSensematch in 2 months. No team. No funding. Just me

https://dealsensematch.com
2•Louiemarlow•15m ago•1 comments

Building the First AI-Native Hotel Booking Platform

https://hotels.cooveb.com/
1•sshinde•16m ago•0 comments

I am not a Software Engineer

https://huronbikes.mataroa.blog/blog/i-am-not-a-software-engineer/
2•l0b0•19m ago•0 comments

Understanding the Garbage Collector

https://ocaml.org/docs/garbage-collector
1•jkxyz•20m ago•0 comments

"Antarctica" – Fiction; the Yale Review

https://yalereview.org/article/jen-silverman-antarctica
2•everybodyknows•21m ago•0 comments

Show HN: DDS Vibe Academy – 31 free AI coding masterclasses, built by AI agents

1•robert_ddsbos•22m ago•0 comments

US transportation bill would add a $130 annual fee for EV drivers

https://arstechnica.com/cars/2026/05/bipartisan-bill-in-congress-includes-130-annual-ev-registrat...
7•logickkk1•24m ago•1 comments

Use Grok in OpenClaw

https://x.ai/news/grok-openclaw
2•surprisetalk•24m ago•1 comments

"How We Think" by John Dewey [pdf]

https://bef632.wordpress.com/wp-content/uploads/2015/09/dewey-how-we-think.pdf
2•baxtr•25m ago•0 comments

Tiny Basic feels like a dead albatross around my neck (1975)

https://archive.org/details/dr_dobbs_journal_vol_01
1•robin_reala•26m ago•0 comments

Most AI agent papers stack one LLM with a vector store, we flipped it

https://sbarron.com/writing/substrate-is-the-body
2•iampneuma•27m ago•1 comments

Solving the "Zork" Mystery

https://www.dpolakovic.space/blogs/zork-part2
1•dpola•27m ago•1 comments

LibrePCB 2.1 with cross-probing, net highlighting, UI themes and more

https://librepcb.org/blog/2026-05-19_release_2.1.0/
1•rnestler•28m ago•0 comments

Show HN: ECD++ 2026.3.10 Is Released

https://github.com/nbauma109/ecd/releases/tag/2026.3.10
1•nbauma109•29m ago•0 comments

Show HN: 5 Minute Frenzy – free multiplication practice game for kids

https://5minutefrenzy.com
2•carvil•30m ago•2 comments

'Obvious markers of AI': doubts raised over winner of short story prize

https://www.theguardian.com/books/2026/may/19/commonwealth-short-story-prize-winner-doubts-ai-art...
5•n1b0m•31m ago•1 comments

LiveFoldersFS – Reactive Filesystem Abstraction

https://www.livefoldersfs.org
2•loterio•31m ago•1 comments
Open in hackernews

Tesla's lithium refinery discharges 231,000 gallons of polluted wastewater a day

https://www.autonocion.com/us/tesla-lithium-refinery-texas/
134•atombender•32m ago

Comments

malfist•23m ago
This is the report from testing the water:

> Hexavalent chromium at 0.0104 milligrams per liter, just above the lab’s reporting limit of 0.01 mg/L. Hexavalent chromium is classified as a known human carcinogen by the US National Toxicology Program. It is the substance the Erin Brockovich case was built around.

> Arsenic at 0.0025 mg/L. That is below the federal drinking water standard of 0.01 mg/L, but present.

> Strontium at 1.17 mg/L. Mazloum’s technical report on the findings noted that long-term exposure can affect bone density and kidney function in humans and wildlife.

> Lithium and vanadium at concentrations Lazarte’s letter described as abnormally high relative to rainwater or normal groundwater.

> Elevated levels of manganese, iron, phosphorus, calcium, magnesium and potassium consistent with industrial discharge. Manganese, a battery process tracer, can have neurological effects at chronic doses. Excess phosphorus can cause algae blooms that strip oxygen from waterways.

> Ammonia in the form of nitrogen at 1.68 mg/L, amplifying the algae bloom risk.

Strip away the sensationalism, and it just doesn't seem like much? None of these levels seem to be high enough to impair health. The 1.68ppm of ammonia would likely contribute to algae growth, but not majorly, especially if properly diluted. Home aquariums regularly run between 0 and 0.25ppm of NH3 without major issues, so as long as this is diluted 6x it shouldn't impact things.

I hate elon as much as the next guy, and they should have disposed of the water properly, but it doesn't seem to be anything like them running their unpermitted power plants in Memphis.

LightBug1•22m ago
Elon, the big brained wankfest, and his cult of likeminded followers strike again ...
porphyra•21m ago
Obviously, discharging "dark and murky" polluted water is bad. But some of the figures from the lab report don't seem that terrible:

* Hexavalent chromium at 0.0104 milligrams per liter, just above the lab’s reporting limit of 0.01 mg/L. Hexavalent chromium is classified as a known human carcinogen by the US National Toxicology Program. It is the substance the Erin Brockovich case was built around.

* Arsenic at 0.0025 mg/L. That is below the federal drinking water standard of 0.01 mg/L, but present.

The hexavalent chromium is also just barely above the California drinking water standard [1]

[1] https://www.waterboards.ca.gov/drinking_water/certlic/drinki...

Waterluvian•19m ago
If I wanted to fall under that reporting limit, can I just dilute my wastewater a bit more?
cwal37•10m ago
The classic pre-EPA slogan comes to mind: "the solution to pollution is dilution".
SilverElfin•15m ago
But does the amount per liter matter? The quantity matters too right? How much of these substances are being released in total? And since it’s into a drainage ditch that goes past what looks like farmland, does the higher local concentration cause more problems for the population in the area?
bayindirh•15m ago
So, it's fine as long as it's legal, then?

How about when it enters the food chain and starts to accumulate? Will the elements say that "we're under legal limits, and accumulate slowly, so we will act nice and don't poison the organism we're in?"

Love that way of thinking.

dvt•13m ago
> So, it's fine as long as it's legal, then?

> Love that way of thinking.

I mean.. yeah, kinda'? We live in a society made up of laws, that's kind of the premise. So if we don't think something is fine, we can make it illegal (and we often do).

It's a pretty good way of thinking methinks, what's your alternative?

fuzzy2•8m ago
Dunno, maybe strive to release no pollutants at all? Then we wouldn't need all the pesky big government overreach.
xg15•6m ago
It's also a complete fiction in a world dominated by commercial interests, entrenched lobby groups, corrupt politicians and regulatory capture.
tekne•12m ago
I mean... if it's got a similar amount of toxin X to drinking water... then it's probably not making things much worse.

There is lead in dirt!

cyberax•11m ago
Arsenic and lead occur naturally through the food chain. If the levels of discharge are not significantly above the normal levels (and they aren't) then it's harmless.
gegtik•5m ago
its all-natural
lovich•10m ago
“Just barely above the California drinking water standard” is a really long way to say “past the limit”
Aniket-N•7m ago
please stop please stop and educate yourself. I dislike that this is the top message in a forum where we’re supposed to dig deeper.

The US regulatory standards are terrible. https://www.loudounwater.org/information-hexavalent-chromium...

The actual limits are orders of magnitude lower. Educate yourself.

riversflow•6m ago
nah, there is no reason they should be discharging any hexavalent chromium, we have better, less insanely toxic ways of chroming things. trivalent chromium is much less toxic, hexavalent chromium should be banned world-wide.
hansmayer•5m ago
> But some of the figures from the lab report don't seem that terrible

> just above the lab’s reporting limit of 0.01 mg/L.

> just barely above the California drinking water standard

I ... just can't even say anything to this.

youngtaff•21m ago
And how long before this gets flagged off HN?
ck2•19m ago
with Musk it is 100% ALWAYS

privatize the profits

socialize the costs

He does this with EVERY business, the tunnel stuff, the space launches, everything

How do you think he is almost the first TRILLIONAIRE which should not even be a thing

If you spent a dollar PER SECOND it would take 12 days to reach a MILLION

Dollar per second takes 32 YEARS to reach a BILLION

Dollar per second takes 32 THOUSAND YEARS to reach a TRILLION

callamdelaney•19m ago
So glad we're making the switch to electric, it's good for the environment you know!
superxpro12•16m ago
Im sure the Gulf of Mexico reeeeeeally loved the deep water horizon oil spill. And we cleaned all that up right? We didnt just... dump "dispersants" on it to make it heavier than water so it sank to the bottom, right?

Exxon Valdez anyone?

Or how about clean air... who needs that?

nutjob2•11m ago
Yes, much better than ICE cars, by any measure.
cogman10•8m ago
It really is, particularly because of what it ends up replacing.

The alternative is burning and refining fossil fuels.

Louisiana has a large section of land referred to as "cancer alley". It's called that due to the released toxins from oil refining (most likely benzene).

The lithium extracted today will end up circulating in the supply chain for decades. Unlike the fossil fuels refined today which are burned tomorrow, fully releasing all their toxins.

Now, it could be cleaner. There's really no reason they couldn't distill the waste water and then reuse it.

john_strinlai•19m ago
apparently, despite my thoughts going into this:

>Notably, no party has alleged that Tesla is in violation of any law. TCEQ [(Texas Commission on Environmental Quality)] has not found one. Tesla is operating under a permit the state agency issued. The dispute, instead, is about what the permit was supposed to cover, and what got left out of it.

tencentshill•11m ago
As we all know, laws as written are perfect and just, especially in Texas, especially in relation to the environment. They should stop looking into it at all, really.
john_strinlai•10m ago
that is a weird extrapolation from my comment. did you mean to reply to someone else?

i made no comment on whether the laws, as written, are appropriate or not. i just went into the article thinking that this wastewater drainage was completely off the books and was surprised to find no alleged law breaking.

rdtsc•19m ago
> Quality, the state environmental regulator known as TCEQ, had quietly issued Tesla a wastewater discharge permit on January 15, 2025.

Are permits issued loudly usually?

charles_f•15m ago
You've put in my head the picture of a jester announcing "hear! Hear! In which thereby the king allowth the forgerer so known as Tesla Mechanical Horses to discharge..."
john_strinlai•14m ago
i think they just meant "quietly" as in not notifying the Nueces County drainage department that a permit was granted in their area.
nutjob2•13m ago
Yes, there's usually a chorus of trumpets, followed by fireworks.
mohamedkoubaa•11m ago
The state of journalism in 2026
tencentshill•18m ago
The article just... ends? "None of those facts are in dispute. What they mean is."
kridsdale1•17m ago
The sniper got em just in time.
john_strinlai•16m ago
it ends. its just ambiguous writing.

"None of those facts are in dipsute. [However,] what [the facts] mean is [under dispute]."

tencentshill•11m ago
Ah, I misread it.
sva_•5m ago
Maximum tokens reached
aeternum•13m ago
A state investigator visited on February 12, sampled the water flowing from Tesla’s outfall pipe, ran the standard panel of conventional pollutants: dissolved solids, chlorides, sulfates, oil and grease, temperature, dissolved oxygen. Everything in that panel came back inside the bounds of Tesla’s permit. TCEQ approved its investigation report on March 20, finding no permit violation.

The article then proceeds to explain how they did all kinds of non-standard tests and still found nothing above the federal drinking water standard nor in violation of the permit. Yes Tesla is still evil and responsible because supposedly some nearby town is having a drought and people are "running out of water."

Shit like this and we wonder why the US is dependent on China for all rare earths.

cyberax•13m ago
> Ammonia in the form of nitrogen at 1.68 mg/L, amplifying the algae bloom risk.

:facepalm:

If you're fear-mongering, then at least take care to fear-monger correctly. From the numbers they report, it seems like Tesla is doing a good job with wastewater treatment.

ex1fm3ta•13m ago
Lithium production produce lots of toxic material. That's why I was happy the chinese were doing it for a penny. Of course driving carbon neutral but releasing tons of poison in the nature is a questionnable equation.
tredre3•6m ago
Isn't China great? First we make them produce all our stuff, then we bash them for polluting slightly more than us westerners, who produces nothing.

We win political points for globalism, we win political points for lower cost goods, then we win political points by virtue signaling about the environment! So convenient.

Aloisius•12m ago
My eyes glaze over any time an article uses the term "heavy metals" unironically.

This could be bad or it could not, but I simply can't take anything seriously that uses ambiguous terms so linked to woo.

nutjob2•6m ago
There is a reason China does so well refining metals like lithium and rare earths: it's difficult, resource intensive and polluting. They have about a 80% global share in lithium processing.

That doesn't matter under a communist dictatorship, but in more civilized countries people don't want it in their backyard.

perrohunter•6m ago
what a coincidence, all they want to do is report negatively on anything that Tesla touches, I've grown skeptical on all these sort of reports, most likely other refineries have similar or worse track records, but that doesn't fit the narrative right?