Our hominid ancestors faced a Pleistocene world full of dangers—and apparently one of those dangers was lead poisoning.

Lead exposure sounds like a modern problem, at least if you define “modern” the way a paleoanthropologist might: a time that started a few thousand years ago with ancient Roman silver smelting and lead pipes. According to a recent study, however, lead is a much more ancient nemesis, one that predates not just the Romans but the existence of our genus Homo . Paleoanthropologist Renaud Joannes-Boyau of Australia’s Southern Cross University and his colleagues found evidence of exposure to dangerous amounts of lead in the teeth of fossil apes and hominins dating back almost 2 million years. And somewhat controversially, they suggest that the toxic element’s pervasiveness may have helped shape our evolutionary history.

The Romans didn’t invent lead poisoning

Joannes-Boyau and his colleagues took tiny samples of preserved enamel and dentin from the teeth of 51 fossils. In most of those teeth, the paleoanthropologists found evidence that these apes and hominins had been exposed to lead—sometimes in dangerous quantities—fairly often during their early years.

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The United States Grand Prix takes place this weekend at the Circuit of the Americas in Texas, and this morning, Formula 1 used the occasion to announce a new broadcast deal for the sport in the US. Starting next year, F1 will no longer be broadcast on ESPN—it’s moving to Apple TV in a five-year, $750 million deal.

Apple boss Tim Cook has been seen at F1 races in the past, and earlier this year, Apple released F1: The Movie , starring Brad Pitt as a 50-something racing driver who improbably gets a second bite at the cherry 30 years after a brutal crash seemingly ended his F1 career.

But securing the rights to the sport itself means Apple has snagged a very fast-growing series, with races almost every other week—currently, the sport has expanded to 24 races a year.

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The car world has long had a thing about numbers. Engine outputs. Top speeds. Zero-to-60 times. Displacement. But the numbers go beyond bench racing specs. Some cars have numbers for names, and few more memorably than Porsche. Its most famous model shares its appellation with the emergency services here in North America; although the car should accurately be “nine-11,” you call it “nine-one-one.”

Some numbers are less well-known, but perhaps more special to Porsche’s fans, especially those who like racing. 908. 917. 956. 962. 919. But how about 963?

That’s Porsche’s current sports prototype, a 670-hp (500 kW) hybrid that for the last three years has battled against rivals in what is starting to look like, if not a golden era for endurance racing, then at least a very purple patch. And the 963 has done well, racing here in IMSA’s WeatherTech Sportscar Championship and around the globe in the FIA World Endurance Championship.

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When teachers rely on commonly used artificial intelligence chatbots to devise lesson plans, it does not result in more engaging, immersive, or effective learning experiences compared with existing techniques, we found in our recent study . The AI-generated civics lesson plans we analyzed also left out opportunities for students to explore the stories and experiences of traditionally marginalized people.

The allure of generative AI as a teaching aid has caught the attention of educators. A Gallup survey from September 2025 found that 60 percent of K-12 teachers are already using AI in their work , with the most common reported use being teaching preparation and lesson planning.

Without the assistance of AI, teachers might spend hours every week crafting lessons for their students. With AI, time-stretched teachers can generate detailed lesson plans featuring learning objectives, materials, activities, assessments, extension activities, and homework tasks in a matter of seconds.

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Welcome to Edition 8.15 of the Rocket Report! This year has been, at best, one of mixed results for SpaceX’s Starship program. There have been important steps forward, including the successful reuse of the rocket’s massive Super Heavy booster. Clearly, SpaceX is getting really good at launching and recovering the 33-engine booster stage. But Starship itself, part spacecraft and part upper stage, hasn’t fared as well —at least it hadn’t until the last couple of months. After four Starships were destroyed in flight and on the ground in the first half of 2025, the last two missions ended with pinpoint splashdowns in the Indian Ocean. The most recent mission this week was arguably the most successful yet for Starship, which returned to Earth with little damage, suggesting SpaceX’s improvements to the heat shield are working.

As always, we welcome reader submissions . If you don’t want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets, as well as a quick look ahead at the next three launches on the calendar.

SpaceX vet will fly with Blue Origin. Hans Koenigsmann is one of SpaceX’s earliest, longest-tenured, and most-revered employees. He worked at Elon Musk’s space company for nearly two decades, rising to the role of vice president for mission assurance and safety before leaving SpaceX in 2021. He led the investigations into every Falcon rocket failure, mentored young engineers, and became a public face for SpaceX through numerous presentations and press conferences. And now he has announced he is going to space on a future suborbital flight on Blue Origin’s New Shepard vehicle, Ars reports .

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We all feel it: Our once-happy digital spaces have become increasingly less user-friendly and more toxic, cluttered with extras nobody asked for and hardly anybody wants. There’s even a word for it: “enshittification,” named 2023 Word of the Year by the American Dialect Society. The term was coined by tech journalist/science fiction author Cory Doctorow , a longtime advocate of digital rights. Doctorow has spun his analysis of what’s been ailing the tech industry into an eminently readable new book, Enshittification: Why Everything Suddenly Got Worse and What To Do About It .

As Doctorow tells it, he was on vacation in Puerto Rico, staying in a remote cabin nestled in a cloud forest with microwave Internet service—i.e., very bad Internet service, since microwave signals struggle to penetrate through clouds. It was a 90-minute drive to town, but when they tried to consult TripAdvisor for good local places to have dinner one night, they couldn’t get the site to load. “All you would get is the little TripAdvisor logo as an SVG filling your whole tab and nothing else,” Doctorow told Ars. “So I tweeted, ‘Has anyone at TripAdvisor ever been on a trip? This is the most enshittified website I’ve ever used.'”

Initially, he just got a few “haha, that’s a funny word” responses. “It was when I married that to this technical critique, at a moment when things were quite visibly bad to a much larger group of people, that made it take off,” Doctorow said. “I didn’t deliberately set out to do it. I bought a million lottery tickets and one of them won the lottery. It only took two decades.”

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A prominent voice in the Make America Healthy Again movement is pushing for health secretary and anti-vaccine activist Robert F. Kennedy Jr. to make the topic of chemtrail conspiracy theories a federal priority, according to a report by KFF News.

KFF obtained a memo , written by MAHA influencer Gray Delany in July, presenting the topic to Calley Means, a White House health advisor. The memo lays out a series of unsubstantiated and far-fetched claims that academic researchers and federal agencies are secretively spreading toxic substances from airplanes, poisoning Americans and spurring large-scale weather events, such as the devastating flooding in Texas last summer.

“It is unconscionable that anyone should be allowed to spray known neurotoxins and environmental toxins over our nation’s citizens, their land, food and water supplies,” Delany writes in the memo.

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Like virtually every major Windows announcement in the last three years, the spate of features that Microsoft announced for the operating system today all revolve around generative AI. In particular, they’re concerned with the company’s more recent preoccupation with “agentic” AI, an industry buzzword for “telling AI-powered software to perform a task, which it then does in the background while you move on to other things.”

But the overarching impression I got, both from reading the announcement and sitting through a press briefing earlier this month, is that Microsoft is using language models and other generative AI technologies to try again with Cortana, Microsoft’s failed and discontinued entry in the voice assistant wars of the 2010s.

According to Microsoft’s Consumer Chief Marketing Officer Yusuf Mehdi, “AI PCs” should be able to recognize input “naturally, in text or voice,” to be able to guide users based on what’s on their screens at any given moment, and that AI assistants “should be able to take action on your behalf.”

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Hacking groups—at least one of which works on behalf of the North Korean government—have found a new and inexpensive way to distribute malware from “bulletproof” hosts: stashing them on public cryptocurrency blockchains.

In a Thursday post , members of the Google Threat Intelligence Group said the technique provides the hackers with their own “bulletproof” host, a term that describes cloud platforms that are largely immune from takedowns by law enforcement and pressure from security researchers. More traditionally, these hosts are located in countries without treaties agreeing to enforce criminal laws from the US and other nations. These services often charge hefty sums and cater to criminals spreading malware or peddling child sexual abuse material and wares sold in crime-based flea markets.

Next-gen, DIY hosting that can’t be tampered with

Since February, Google researchers have observed two groups turning to a newer technique to infect targets with credential stealers and other forms of malware. The method, known as EtherHiding, embeds the malware in smart contracts, which are essentially apps that reside on blockchains for Ethereum and other cryptocurrencies. Two or more parties then enter into an agreement spelled out in the contract. When certain conditions are met, the apps enforce the contract terms in a way that, at least theoretically, is immutable and independent of any central authority.

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