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    How we learned to break down barriers to machine learning / ArsTechnica · 2 days ago - 16:12

Dr. Sephus discusses breaking down barriers to machine learning at Ars Frontiers 2022. Click here for transcript . (video link)

Welcome to the week after Ars Frontiers! This article is the first in a short series of pieces that will recap each of the day's talks for the benefit of those who weren't able to travel to DC for our first conference. We'll be running one of these every few days for the next couple of weeks, and each one will include an embedded video of the talk (along with a transcript).

For today's recap, we're going over our talk with Amazon Web Services tech evangelist Dr. Nashlie Sephus. Our discussion was titled "Breaking Barriers to Machine Learning."

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    New Bluetooth hack can unlock your Tesla—and all kinds of other devices / ArsTechnica · 3 days ago - 14:03 · 1 minute

New Bluetooth hack can unlock your Tesla—and all kinds of other devices

Enlarge (credit: Getty Images)

When you use your phone to unlock a Tesla, the device and the car use Bluetooth signals to measure their proximity to each other. Move close to the car with the phone in hand, and the door automatically unlocks. Move away, and it locks. This proximity authentication works on the assumption that the key stored on the phone can only be transmitted when the locked device is within Bluetooth range.

Now, a researcher has devised a hack that allows him to unlock millions of Teslas—and countless other devices—even when the authenticating phone or key fob is hundreds of yards or miles away. The hack, which exploits weaknesses in the Bluetooth Low Energy standard adhered to by thousands of device makers, can be used to unlock doors, open and operate vehicles, and gain unauthorized access to a host of laptops and other security-sensitive devices.

When convenience comes back to bite us

“Hacking into a car from hundreds of miles away tangibly demonstrates how our connected world opens us up to threats from the other side of the country—and sometimes even the other side of the world,” Sultan Qasim Khan, a principal security consultant and researcher at security firm NCC Group, told Ars. “This research circumvents typical countermeasures against remote adversarial vehicle unlocking and changes the way we need to think about the security of Bluetooth Low Energy communications.”

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    MacBook buying guide: The right M1 laptop for each use case / ArsTechnica · 3 days ago - 11:45

Two 2021 MacBook Pro models side-by-side.

Enlarge / Two 2021 MacBook Pro models side-by-side. (credit: Samuel Axon)

Over the past two years, Apple has completed an overhaul of its entire laptop lineup. That means it’s as good a time as any for people who have been holding out on upgrading an older MacBook to dive in.

But which MacBook is the best one to pick up? That depends a lot on your specific use case, and that’s what we’ll explore here today.

Typically, buying guides pick the diamonds out of the rough—the “rough” being hundreds of subpar products. But when recommending a MacBook, it’s a simpler affair. There aren’t that many of them to pick from. But because they typically cannot be upgraded, there are some consequential choices you’ll need to make before buying.

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    How to build a wormhole in just 3 (nearly impossible) steps / ArsTechnica · 5 days ago - 11:20

How to build a wormhole in just 3 (nearly impossible) steps

Enlarge (credit: Aurich Lawson | Getty Images)

You’ve got yourself a fancy new spaceship and you want to start on a five-year tour of the galaxy. But there's a problem: Space is big. Really big. And even at the fastest speeds imaginable, it takes eons of crawling across the interstellar voids to get anywhere interesting.

The solution? It’s time to build a wormhole.

A shortcut. A tunnel. A bridge through spacetime that lets you skip through all that boring space travel and speed to the fun stuff. It’s a staple of science-fiction, and it’s rooted in science-fact. How difficult could it be?

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    A comprehensive overview of Windows 11 22H2, the OS’s first big yearly update / ArsTechnica · Friday, 13 May - 21:37

Windows 11 22H2 is entering its next stage of development, according to rumors—and the OS itself.

Enlarge / Windows 11 22H2 is entering its next stage of development, according to rumors—and the OS itself. (credit: Andrew Cunningham)

Windows 11 has already changed quite a bit since the version we reviewed in October was released, and Microsoft has put out a steady stream of redesigned app updates, bug fixes, and user interface improvements.

But the company's big yearly Windows updates are still important. They're where Microsoft makes the most significant changes to Windows 11's look and feel and under-the-hood features. This week, rumors suggested that Microsoft is wrapping up work on what will eventually be released as Windows 11 version 22H2, the OS's first yearly update. That build, currently available to the Windows Insider Beta channel as build number 22621.1 , will serve as the foundation for the next year of Windows updates.

We cover new Windows Insider builds fairly frequently, depending on how noteworthy the changes are. But to save you the trouble of scrolling through months of articles, we've gathered together all the most significant differences between the current public build of Windows 11 21H2 (for the record, 22000.675) and the latest beta of version 22H2.

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    Lenovo’s Yoga 9i Gen 7 is a 2-in-1 statement piece / ArsTechnica · Friday, 13 May - 11:45 · 1 minute

Lenovo Yoga 9i lid

Enlarge / Lenovo's Yoga 9i 14" 7th Gen laptop. (credit: Scharon Harding)

Specs at a glance: Lenovo Yoga 9i (14")
Worst Best As reviewed
Screen 14-inch 1920×1200 IPS touchscreen 14-inch 3840×2400 90 Hz OLED IPS touchscreen 14-inch 2800×1800 90 Hz OLED IPS touchscreen
OS Windows 11 Home
CPU Intel Core i7-1260P
RAM 8GB LPDDR5-5200 16GB LPDDR5-5200
Storage 256 GB PCIe 4.0 SSD 1 TB PCIe 4.0 SSD 512 GB PCIe 4.0 SSD
GPU Intel Iris Xe (integrated)
Networking 802.11ax (2×2), Bluetooth 5.2
Ports 2x Thunderbolt 4 (USB-C), 1x USB-C 3.2 Gen 2, 1x USB-A 3.2 Gen 2, 1x 3.5 mm jack
Size 12.52 x 9.06 x 0.6 inches
(318 x 230 x 15.25 mm)
Weight Starts at 3.26 lbs (1,480 g)
Battery 75 Whr
Warranty 1 year
Price (MSRP) $1,080 at Lenovo $1,930 $1,730
Other Stylus, protective sleeve included

For a laptop to make a statement, it needs to have more than just the latest components—it has to have style. Lenovo's Yoga 9i is ready to compete in today's market with its Intel 12th Gen P-series CPUs, but it shows it's more than just another thin-and-light convertible with luxurious details.

You can immediately tell the Yoga 9i was designed to grab your attention with its shiny, polished finishes. But it's the creature comforts, like a hi-res webcam with background blur, an optional tall and fast OLED touchscreen, and abnormally loud speakers—that tell the real story.

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    The most important EV of the decade? We drive the F-150 Lightning / ArsTechnica · Wednesday, 11 May - 10:00 · 1 minute

At first glance, this could be any other Ford F-150 pickup, but the aerodynamic wheels and nose treatment mark it out as the all-electric F-150 Lightning. This is the top-spec Platinum trim.

Enlarge / At first glance, this could be any other Ford F-150 pickup, but the aerodynamic wheels and nose treatment mark it out as the all-electric F-150 Lightning. This is the top-spec Platinum trim. (credit: Jonathan Gitlin)

Ford provided a night in a hotel and a flight to San Antonio so we could drive the new F-150 Lightning. Ars does not accept paid editorial content.

SAN ANTONIO, TEXAS—Simply put, the Ford F-150 Lightning is the most important new electric vehicle we'll drive for some time. Auto journalists can be accused of using that cliché all too readily, but in this case, I think it's defensible. Americans love pickup trucks more than any other four-wheeled vehicle, and when it comes to pickup trucks, they love Ford's F-series enough that it has been the nation's bestseller for almost as long as I've been alive .

Making a fully battery-electric version of its favorite pickup therefore seems like a good way to spur adoption of electric vehicles in a country that's lagging behind Europe and China. But only if the truck is any good. Part of the reason Ford sells so many F-series trucks is that many of them are put to work, pulling trailers or hauling heavy loads in their beds. And it's just as important to decarbonize those trucks, which means that a stripped-down electric F-150 has to be able to cut it on the job site just as much as in the role of a suburban dad's fully loaded commuter pickup.

To a casual observer, there's little that marks the F-150 Lightning as being anything other than just another F-150 with a super crew cab and a 5.5-foot bed. Instead of an open grille, there's a more aerodynamic treatment at the front, plus some distinctive daytime running lights. The alloy wheels' surfaces are more disc-like than you'd normally see. And if you look carefully, you'll spot the occasional lightning bolt. The cab is light and airy thanks to large glass moonroofs, and there's plenty of room in the back for large adults.

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    Why our continued use of fossil fuels is creating a financial time bomb / ArsTechnica · Monday, 9 May - 11:00

Why our continued use of fossil fuels is creating a financial time bomb

Enlarge (credit: Aurich Lawson | Getty Images)

The numbers are startling.

We know roughly how much more carbon dioxide we can put into the atmosphere before we exceed our climate goals—limiting warming to 1.5° to 2° C above preindustrial temperatures. From that, we can figure out how much more fossil fuel we can burn before we emit that much carbon dioxide. But when you compare those numbers with our known fossil fuel reserves, things get jaw-dropping.

To reach our climate goals, we'll need to leave a third of the oil, half of the natural gas, and nearly all the coal we're aware of sitting in the ground , unused.

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