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lundi 14 septembre 2026

F1 in Madrid: Like Monaco but twice as long and none of the glamour

F1 in Madrid: Like Monaco but twice as long and none of the glamour

It’s been quite a couple of weeks for Formula 1. First, its annual visit to one of the oldest tracks on the calendar, the Italian temple of speed that is Monza, just outside Milan. Apologies for no Ars report, but your correspondent was on the ground, on vacation, learning the hard way that attempts to call the circuit “accessible by public transport” can still involve walking several miles. The place was packed with Tifosi—the hardcore Italian superfans—dressed in red, who had their hopes dashed almost immediately as Charles Leclerc first ruined his teammate’s race, then his own, all within the first two laps.

Salvation came in the form of the first Italian title contender in my lifetime, Mercedes’ Kimi Antonelli. Opting to take a new engine and other power unit components meant Antonelli would start the race from 19th. But the kid is in fine form right now, and Monza’s long straights and slow corners make for several good overtaking spots. I declared to my race companions that morning that “he’s going to podium, easily,” but if anything, I was too cautious. By the time Leclerc’s heavy crash at Parabolica had stopped the race, Antonelli was already up to 12th.

From the second standing start, on fresh medium tires and still needing a second pitstop, he made short work of the rest of the grid, including his teammate George Russell, who spent much of the race in the lead, on a theoretically faster one-stop strategy. Even a mistake from Antonelli that saw him make an excursion through a gravel trap as he tried to pass Russell couldn’t stop his charge, and he became the first Italian to win the Italian Grand Prix in 60 years—fairy tale stuff, surely.

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Unvaccinated Pennsylvania woman died of measles complications, coroner says

Unvaccinated Pennsylvania woman died of measles complications, coroner says

A 40-year-old woman in Jefferson County, Pennsylvania, has died of complications from measles, according to the county's coroner.

It marks the third vaccine-preventable, measles-linked death in the US this year. All three have occurred in Pennsylvania, which is experiencing an explosive outbreak that has caused over 670 cases and 124 hospitalizations across 37 counties. Prior to these deaths, Pennsylvania had not reported a measles death in 35 years.

In a news release dated September 12, Jefferson County Coroner Greg Furlong said the death of the woman was "a heartbreaking loss for the family and an unfortunate reminder that measles can be a serious and potentially life-threatening disease."

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I fixed a tractor using John Deere’s self-repair service. Farmers aren’t sold on it.

I fixed a tractor using John Deere’s self-repair service. Farmers aren’t sold on it.

There is something wrong with the tractor. The water-in-fuel sensor, a small device embedded in the John Deere machine that monitors the integrity of its diesel engine, is disconnected. And I’ve got to fix it.

I’m not a mechanic or a farmer. I’m poking at a laptop at John Deere’s corporate office in Santa Clara, California. There’s a cable connecting the computer to a 5130ML tractor sitting on the grass nearby. A bright red notification sits on the screen, telling me something is wrong. I type in a question and the software pulls up instructions and a few images from the user manual that matches the serial number of the machine.

Credit: Boone Ashworth

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I spent $4,000 on a robot dog from China

I spent $4,000 on a robot dog from China

On a sunny morning in June, I walked to work with a quadruped robot beside me. I’ve never gotten more attention from strangers.

A bunch of people snapped pictures of my robot dog. Several people asked me questions. Was it mine? (Yes.) Did I build it? (No.) Was it being used for surveillance? (No.)

Biological dogs kept a safe distance from my mechanical companion. Some growled or barked at it.

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Some satellite companies still have an appetite for boutique launch services

Some satellite companies still have an appetite for boutique launch services

If you ask most satellite companies aside from SpaceX, they will tell you the world doesn't have enough capacity for launching payloads into orbit. This is despite the blistering launch cadence we've seen around the world in recent years, led by SpaceX's Falcon 9 rocket.

Customers in any sector will, of course, usually welcome competition. Theoretically, competition will lead to lower prices and allow the best to rise to the top. It seems like the customers buying launch services were right. SpaceX is dialing back its Falcon 9 launch program, and there is no certainty about when SpaceX's reusable next-generation super-heavy-lift rocket, Starship, will carry anything to orbit besides the company's own Starlink satellites.

So it's no surprise satellite operators are cheering the success of a new launch provider. This was especially the case a few days ago, when Germany's Isar Aerospace reached orbit for the first time with its Spectrum rocket. The launcher delivered a batch of CubeSats to low-Earth orbit from a spaceport in northern Norway, and Isar tasted success after its first test flight ended in failure last year.

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Random rewards enrich classic game-theory insights

Random rewards enrich classic game-theory insights

Games may be life with all the hard bits removed, but they provide a way to study why people make the choices they make. Traditional games are usually played against a static background: the rewards per outcome are constant. That limits their relevance to behavior because, in real life, the rewards and consequences of strategic choices are ever-changing. Now, researchers have used a mathematical model to study a series of games that include evolving strategies and randomly varying returns.

A bit of history

Perhaps the most famous game-theory contest is the prisoner’s dilemma. In the prisoner’s dilemma, a pair of thieves have been captured and are being separately interrogated by the police. If both clam up, they will be punished for a lesser crime. If one prisoner makes a deal (defects) then that prisoner gets to go free and the other gets a heavier sentence. If both make a deal, they both get an in-between punishment.

The person running the game can start it with different rewards for cooperating and defecting to explore how the optimum strategy varies with reward and risk, which the players can figure out by varying the strategies across multiple rounds. Depending on the balance between the reward for staying silent (cooperating) and betrayal, the game stabilizes with everyone betraying everyone. In this simple situation, everyone loses.

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Bouncy castle launches horrifying MRSA outbreak, striking 48 kids in Ireland

Bouncy castle launches horrifying MRSA outbreak, striking 48 kids in Ireland

For a child bursting with energy, few things are more fun than hurtling through a bouncy castle, launching into the air, and ping-ponging between every surface. But that childhood buoyancy will quickly deflate when it turns out those surfaces are smeared with a hypervirulent, multidrug-resistant pathogen.

That was the horrifying reality for a community in Ireland in fall 2025. Neighbors had gathered for an afternoon of merriment, complete with a barbecue, a sweets station, and three bouncy castles. Officials estimate that about 120 people joined the festivities, and around half of them were children and teens. Within a day, some children began developing signs of an infection. In all, 48 children in the community developed aggressive skin and soft-tissue infections.

Of the 48 cases, 33 were treated by their regular doctor, and 15 sought emergency care. Four children ended up being hospitalized. Luckily, all of the children recovered. The results of the outbreak investigation were reported this week in the journal Eurosurveillance.

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