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Today is your last chance to add to this year's charity haul of nearly $38,000.

xAI may be liable for Grok generating AI CSAM.

Deadly doors, a busted battery bet, and a toxic owner: What's not to like?

"NASA and Roscosmos continue to monitor and investigate the previously observed cracks."

"Acting is the sum of everything you've experienced. The joy. Sadness. Loss, Heartbreak."

Double-detonating "superkilonova," Roman liquid gypsum burials, biomechanics of kangaroo posture, and more.

Streaming may get a little worse before it gets better.

Streamers made a strong showing this year, as did horror. Big tentpoles, superhero sagas mostly fell flat.

This time, a Colorado plant scheduled to shut down will be kept on standby.

The past year has seen plenty of hacks and outages. Here are the ones topping the list.

In a year where lofty promises collided with inconvenient research, would-be oracles became software tools.

The study's main takeaway: "Be bold. It is the thing that slows down authoritarian creep."

Settlement forces NIH to review grants previously rejected on ideological grounds.

Musk allies spin DOGE as having a "higher purpose" beyond federal budget cuts.

The state deals with flooding and sea level rise by buying homes in flood prone areas.

Netflix's finale will also have a two-day theatrical release to more than 600 locations.

A serious data breach has occurred, but Ars users have nothing to worry about.

Gathering for mutual defense puts young spiny lobsters at risk of predators.

Florida man makes two appearances on the list.

Of all the cars we've driven and reviewed this year, these are our picks.

On Monday, US officials must explain what steps they took to enforce shocking visa bans.

Yakisugi, a Japanese technique of burning wood surfaces, creates a protective carbonized layer

Information from sensors is transmitted using neural-style activity spikes.

China wants a human to intervene and notify guardians if suicide is ever mentioned.

Folklorist/historian Adrienne Mayor on her new book Mythopedia: A Brief Compendium of Natural History Lore

GPS jamming has gotten cheap and easy, but there are potential solutions.

Remembering Windows 10's rollout can help diagnose what ails Windows 11.

Swapping SIM cards used to be easy, and then came eSIM.

From Apple gifting a gold statue to the US taking a stake in Intel.

Art and science converge in Lynn Gamwell's book, Conjuring the Void: The Art of Black Holes

Most things Privateer did have been done better, but it's still a classic.

A mix of expected sequels and out-of-nowhere indie gems made 2025 a joy.

"You're Santa Claus 24 hours a day, seven days a week, 52 weeks a year." Acting out may shatter "the magic."

The bill would significantly curtail scope of the federal environmental review process.

Netflix and Apple TV dominate this year's list with thrillers, fantasy, sci-fi, and murder.

From compression tricks to multi-agent teamwork, here's what makes them tick.

The launch laid "an important foundation for subsequent launches and reliable recovery."

It's purportedly the first of four planned teasers, one per week, showing before Avatar: Fire and Ash.

US drone makers are happy-US drone hobbyists, not so much.

Incident reports spiked during the first six months of 2025.

Redditor jokes LimeWire is now a "champion against the darkness."

A loophole in the rules might have given Mercedes and Red Bull a big advantage.

Splay can be a monitor and takes a lot of the stress out of projectors, too.

"It has been a great privilege to lead ULA through its transformation and to bring Vulcan into service."

He had worked on Medal of Honor, Call of Duty, Titanfall, and Battlefield.

"This particular anomaly deserves to be right up front and center for quite some time."

Spotify is reportedly investigating how much music Anna's Archive scraped.

Projects with hardware in the water stopped due to Department of Defense fears.

"After years of war, no one could stand between my men and home. Not even me."

Apple can't force app makers to get consent twice to track user data, Italian regulator says.