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dimanche 12 avril 2026

F1 moves a step closer to fixing its 2026 hybrid problem

F1 moves a step closer to fixing its 2026 hybrid problem

Formula 1 is enjoying something of an unexpected break right now. The war in the Middle East led to the cancellation of F1 races scheduled for this month in Bahrain and Saudi Arabia. Instead, the teams will use this time to further develop their cars. For teams like Aston Martin, Cadillac, and Williams, it will be a welcome respite and a chance to catch up to the midfield. Even Mercedes, clear and away the championship favorite this year, has things to work on if it wants to stop losing so many positions at the start of each race or have an easier time passing cars in traffic.

That should keep the mechanics and engineers quite busy, but in case not, technical representatives from each team as well as the FIA (the sport's governing body) are sitting down throughout the month to try to fix some problems that are a consequence of F1's new technical rules.

This is about hybrids, you say?

From the start of this year, F1 cars have new hybrid power units. There's a 1.6 L turbocharged V6 engine that runs on carbon-neutral gasoline, which generates 400 kW (536 hp). And there's an electric motor-generator unit (or MGU) that outputs up to 350 kW (469 hp) as long as there's charge in the 4 MJ (1.1 kWh) battery pack. As batteries go, that's about the right size for something like a Prius, but in an F1 car at full deployment, it goes from full to empty in little more than 11 seconds.

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Report: US demands Reddit unmask ICE critic, summons firm to grand jury

Report: US demands Reddit unmask ICE critic, summons firm to grand jury

The Trump administration has stepped up an effort to unmask a Reddit user who criticized Immigration and Customs Enforcement (ICE). After failing to obtain information through a summons issued to Reddit, the government reportedly issued a subpoena demanding that Reddit provide the information and appear before a grand jury in Washington, DC.

The Intercept described the subpoena today. "According to a subpoena obtained by The Intercept, Reddit has until April 14 to provide a wide range of personal data on one of its users, whom US Immigration and Customs Enforcement agents have been trying unsuccessfully to identify for more than a month," the article said.

The legal saga began in US District Court for the Northern District of California. On March 12, the anonymous Reddit user whose information is being sought filed a motion to quash a summons seeking a host of information from Reddit. The summons was issued by the Department of Homeland Security and directed Reddit to turn information over to an ICE senior special agent.

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Microsoft's "commitment to Windows quality" starts with overhaul of beta program

Microsoft's "commitment to Windows quality" starts with overhaul of beta program

Microsoft says it hears the complaints people have about the current state of Windows, and it wants to fix them. One of those fixes is another overhaul for its Windows Insider Program, the public beta system that Microsoft has used since Windows 10 to test and preview upcoming versions of the operating system and new app updates.

The company hinted at this in its "commitment to Windows quality" post last month, and it's announcing details today in another post attributed to Microsoft Principal Group Product Manager Alec Oot.

Since its last reorganization in 2023, the Windows Insider Program has had four testing channels. From least to most stable, these are the Canary channel, the Dev channel, the Beta channel, and the Release Preview channel. Both Canary and Dev are for earlier builds of Windows and new apps, while Beta tends to get things that are closer to finished and much more likely to ship to the general public. The Release Preview channel is a new Windows version's last stop before public release and is usually near-final.

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"Oobleck" still holds some surprises

"Oobleck" still holds some surprises

Mixing corn starch and water in appropriate amounts produces a slurry that is liquid when stirred slowly but hardens when you punch it—a substance colorfully dubbed “oobleck.” (The name derives from a 1949 Dr. Seuss children’s book, Bartholomew and the Oobleck.) High-speed imaging and force measurements have revealed another surprising property of oobleck drops hitting a flat surface, according to a new paper published in the journal Physical Review Letters.

As previously reported, in an ideal fluid, viscosity largely depends on temperature and pressure: Water will continue to flow regardless of other forces acting on it, such as stirring or mixing. In a non-Newtonian fluid, the viscosity changes in response to an applied strain or shearing force, thereby straddling the boundary between liquid and solid behavior. Stirring a cup of water produces a shearing force, and the water shears to move out of the way. The viscosity remains unchanged. But for non-Newtonian fluids like oobleck, the viscosity changes when a shearing force is applied.

Ketchup, for instance, is a shear-thickening non-Newtonian fluid, which is one reason smacking the bottom of the bottle doesn’t make the ketchup come out any faster; the application of force increases the viscosity. Yogurt, gravy, mud, pudding, and thickened pie fillings are other examples. And so is oobleck.

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YouTube increases Premium price again, says 90-second unskippable ads are a bug

YouTube increases Premium price again, says 90-second unskippable ads are a bug

Over the years, YouTube has evolved from a source of Rickrolls and cat videos to a platform for some of the Internet's most popular streaming content. Today, it costs more than ever to see that content, as YouTube has announced another price increase for its Premium service. Viewers who can't stomach the cost of Premium will be greeted by increasingly lengthy ad breaks, but YouTube says some of that is due to a bug it's now addressing.

YouTube has not posted a standalone blog announcing the change, but existing subscribers are getting email alerts. The higher pricing is also live for new sign-ups in the US as of this writing. Here's the important part of YouTube's email alerts:

To continue delivering great service and features, we’re increasing your price to $15.99/month. We don’t make these decisions lightly, but this update will allow us to continue to improve Premium and support the creators and artists you watch on YouTube.

You will see the change reflected on your June 7, 2026 billing date.

The new $15.99 monthly price is a $2 increase, but if you're on the family plan, the email looks a bit different. For those folks, the price is now $26.99, which is $4 higher. There's also the base Premium Lite subscription that removes most YouTube ads and used to cost $7.99 per month. It's now $1 more.

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Oldest octopus fossil found to not be an octopus

Oldest octopus fossil found to not be an octopus

Pohlsepia mazonensis, a visually underwhelming fossil from Illinois, fundamentally broke our understanding of cephalopod evolution. Described in 2000 and hailed as the oldest known octopus in the fossil record, the specimen dated back to the late Carboniferous period, roughly 311 to 306 million years ago. Pohlsepia was an outlier—all other fossil records strongly suggested that crown coleoids, the group containing octopuses, squid, and cuttlefish, diverged much later, during the Jurassic.

To solve this puzzle, Thomas Clements, a paleontologist at the University of Leicester, and his colleagues put this supposed oldest octopus fossil through a series of high-tech imaging tests. They found Pohlsepia was not an octopus at all. Instead, it was a decomposed, squashed nautiloid.

A Rorschach test

The reason a nautiloid managed to masquerade as an octopus for almost a quarter of a century was due to the way that fossils from the Mazon Creek Lagerstätte formed. Around 300 million years ago, this area was a brackish, tidal marine basin that was periodically inundated by massive amounts of iron-rich river mud. When organisms died and were buried in this sediment fan, the high iron content triggered the precipitation of the mineral siderite around their decaying bodies, locking them inside hard geological nodules.

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What leaked "SteamGPT" files could mean for the PC gaming platform's use of AI

What leaked "SteamGPT" files could mean for the PC gaming platform's use of AI

These days, it seems like every tech company and their corporate parent is looking to squeeze AI tools and features into their products, whether they're wanted or not. So when files with names and functions referencing a "SteamGPT" appeared in a recent Steam client update, Valve watchers took quick notice.

From the outside, it's hard to tell precisely what form any such "SteamGPT" would take. But looking through variable names and references in the files themselves suggests that Valve may be looking to use AI tools to streamline internal evaluations of in-game incidents and sift through potentially suspicious accounts.

Looking at the variables

As tracked by the automated SteamTracking GitHub project, the term "SteamGPT" appears multiple times in three separate files added in the April 7 Steam client update. In addition to the SteamGPT naming convention—a seemingly obvious reference to the generative pre-trained transformers popularized by ChatGPT and its ilk—the files include mentions of terms like multi-category inference, fine-tuning, and "upstream models" that point to some sort of generative AI system.

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