Simulating everything, sort of: The promise and limits of world models
Experts explain how they work, what they can do, and what's still unsettled.
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Like a cheat code for your car: We investigate ECU tuning
Now it's an arms race between OEMs locking down chips and tuners trying to crack them.
Payloads used to dictate the terms of launch. That's finally changing.
"The Starship Pez dispenser demonstrates very smart industrial design and scale."
How AI could enable autonomous robot workers in workplaces—and maybe homes
Top robotics researchers and founders explain how robot autonomy is evolving.
How AI could enable autonomous robot workers in workplaces—and maybe homes
Top robotics researchers and founders explain how robot autonomy is evolving.
The Czinger 21C might be the wildest car we drive all year
This hybrid V8 has organic-looking 3D-printed components and shatters lap records.
Despite the darkness, I still see signs of hope in America
It's difficult to pinpoint the moment in my life where America started to lose the plot.
Editorial: It's time to step up and have your say for science
Your comments on a dangerous rule putting politicals in charge of science can matter.
Range anxiety
The storm developed quickly over west central Illinois on April 17th, first as a single high-intensity system called a supercell, and then later that …
Trump's plan to redesign every .gov website leads to AI-designed horrors
A year in, National Design Studio delays plan to update government web standards.
NASA's X-59 "frankenjet" tests supersonic flight without the sonic boom
NASA’s quiet supersonic flight tests could eventually go on a national tour.
Underpromise, overdeliver? Hands-on with the $24,950 Slate auto.
It has 205 miles of bare-bones range.
This former hacker saw the light—and now wants to collect all of it
"I don’t know of a bigger question we can answer as humans."
As global warming threatens corals, scientists search for reefs that can take the heat
Researchers say these coral strongholds may help repopulate more degraded reefs.
The Ars Technica 2026 Reader Survey: Let your voice be heard!
Tell us how you read Ars, and what you'd like to see more (or less!) of on the front page.
20 years of Intel Macs: Why Apple switched, and why it switched again
Remembering the ups and downs of the Intel Mac era as it finally winds down.
Verizon sent man a refurbished phone with MDM, then deleted his data remotely
Failure raises questions about how Verizon prepares refurbished phones for new users.
Several things I like about macOS 27 Golden Gate that have nothing to do with AI
AI aside, Golden Gate includes a bunch of subtle-but-helpful improvements.
First Drive: The 2027 Rivian R2 entirely changes the EV game
Rivian's second EV is the sub-$60,000 R2, and it was worth the wait.
The weather and climate science AI revolution isn’t revolutionary
Machine learning has its limits—how is it being used?
My SSN was exposed in a breach at Columbia—a school I have no connection with
Columbia admits last year’s data breach exposed victims beyond its students, staff.
Trans teens have something to say
By the time the Children's Hospital closed its doors to trans patients, Sage had already stopped taking testosterone. A nonbinary high school student,…
How long will it take to rebuild Blue Origin's launch pad? We asked some SpaceX vets.
"Everyone is in a place where it’s no fun to be there."
An OpenAI model solved a famous math problem that stumped humans for 80 years
I tried to explain OpenAI’s solution more clearly than OpenAI did.
Here's why the failure of Blue Origin's New Glenn rocket is so catastrophic
"I hope that it makes it far enough away from the pad that it does not cause pad damage."
Roids were all the rage at the Enhanced Games
In Las Vegas, the blazing sun beats down on a makeshift Olympic-length pool. Cody Miller stands on the starting block of lane one. His arms are raised…
Amazing interior, controversial exterior: Ferrari's first electric car
The interior is spectacular; the exterior looks better in person than on screen.
The $58,000 TV bill: When DirecTV sued O.J. Simpson for piracy
In 2001, the FBI raided O.J.'s house and found smartcards, bootloaders.
Yearslong fight over users' right to tweak smart TV software heads to trial
Access to TV OS's source code could allow users to limit ads, tracking.
Bad, Bad, Bad, Bad Roommate
The wildfires that would come to engulf Los Angeles had just begun to burn when Frankee Grove finally admitted to herself that she needed a roommate. …