Guppies are highly susceptible to the Ebbinghaus illusion. Ring doves? Not so much.

Proxy firm says plan doesn't ensure that Musk's "focus and time remain on Tesla."

The Idaho Medical Freedom Act makes it illegal to require anyone to take a vaccine.

The Circuit of the Americas was packed for the US Grand Prix.

Doctors share top concerns of AI surrogates aiding life-or-death decisions.

"NTSB gathering radar, weather, flight recorder data."

What if point-and-click games weren't about the puzzles?

Amazon's Ring partners with company whose tech has reportedly been used by ICE.

For bacterial vaginosis, partners are part of the problemand the solution.

Ars chats with co-authors Lindsey Fitzharris and Adrian Teal about their delightful new children's book.

Preparations for the Artemis II mission continue despite the federal government shutdown.

Lawsuit accuses nudify apps of training on teen victims' images.

Texas app law compared to checking IDs at bookstores and shopping malls.

A recent study found lead in teeth from 2 million-year-old hominin fossils.

Backup firm brings a unique, informed perspective to HDD failure rates.

AI-generated lesson plans fall short on inspiring students and promoting critical thinking.

Riding high in IMSA but pulling out of WEC paints a complicated picture for the factory team.

Some races will be free as F1 TV moves from standalone streaming to Apple TV.

Ars chats with Cory Doctorow about his new book Enshittification.

Starlink, Kuiper, and the US military all saw additions to their mega-constellations this week.

It's unclear if Kennedy will follow through, but he supports the conspiracy theory.

Despite connection hiccups, we covered OpenAI's finances, nuclear power, and Sam Altman.

Malicious payloads stored on Ethereum and BNB blockchains are immune to takedowns.

Copilot expands with an emphasis on creating and editing files, voice input.

The bundle starts at $15/month, compared to $21/month if purchased separately.