Month: June 2024

Enlarge (credit: OLE-CNX)

High-assay low-enriched uranium (HALEU) has been touted as the go-to fuel for powering next-gen nuclear reactors, which include the sodium-cooled TerraPower or the space-borne system powering Demonstration Rocket for Agile Cislunar Operations (DRACO). That’s because it was supposed to offer higher efficiency while keeping uranium enrichment “well below the threshold needed for weapons-grade material,” according to the US Department of Energy.

This justified huge government investments in HALEU production in the US and UK, as well as relaxed security requirements for facilities using it as fuel. But now, a team of scientists has published an article in Science that argues that you can make a nuclear bomb using HALEU.

“I looked it up and DRACO space reactor will use around 300 kg of HALEU. This is marginal, but I would say you could make one a weapon with that much,” says Edwin Lyman, the director of Nuclear Power Safety at the Union of Concerned Scientists and co-author of the paper.

Enlarge (credit: Getty Images | Aurich Lawson)

Internet service providers are again urging the Federal Communications Commission to impose new fees on Big Tech firms and use the money to subsidize broadband network deployment and affordability programs. If approved, the request would force Big Tech firms to pay into the FCC's Universal Service Fund (USF), which in turn distributes money to broadband providers.

The request was made on June 6 by USTelecom, a lobby group for AT&T, Verizon, CenturyLink/Lumen, and smaller telcos. USTelecom has made similar arguments before, but its latest request to the FCC argues that the recent death of a broadband discount program should spur the FCC to start extracting money from Big Tech.

"Through focusing on the Big Tech companies who benefit most from broadband connectivity, the Commission will fairly allocate the burden of sustaining USF," USTelecom wrote in the FCC filing last week.

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  The Calculator app is finally coming to iPad. [credit: Samuel Axon ]

CUPERTINO, Calif.—After going into detail about iOS 18, Apple took a few moments in its WWDC 2024 keynote to walk through some changes.

There are a few minor UI changes and new features across Apple's first party apps. That includes a new floating tab bar. The bar expands into the side bar when you want to dig in, and you can customize the tab bar to include the specific things you want to interact with the most. Additionally, SharePlay allows easier screen sharing and remote control of another person's iPad.

But the big news is that the Calculator app we've all used on the iPhone to the iPad, after years of the iPad having no first-party calculator app at all. The iPad Calculator app can do some things the iPhone version can't do with the Apple Pencil; a feature called Math Notes can write out expressions like you would on a piece of paper, and the app will solve the expressions live as you scribble them—plus various other cool live-updating math features. (These new Math Notes features work in the Notes app, too.)

Enlarge / Using macOS S15 Sequoia to stream an iPhone's screen to a Mac while the iPhone stays locked. (credit: Apple)

Apple has formally announced macOS 15 at its Worldwide Developers Conference. Codenamed Sequoia, the new release brings a combination of iOS 18 features and a few Mac-specific things to the devices it supports.

Users who split their time between Windows and macOS will be the most excited to see that Apple has finally implemented a form of automated window tiling in macOS. This makes it easier to arrange windows automatically on your screen without manually dragging and resizing each one individually or switching into full-screen mode.

Another feature called iPhone Mirroring sends your iPhone's screen to your Mac, so you can use apps directly on your phone while manipulating them using your Mac's keyboard and trackpad. The iPhone audio is also streamed to your Mac. For privacy's sake, your phone's screen stays locked while apps are streaming to your Mac, and your Mac can also receive your iPhone notifications alongside your Mac notifications (no word on how the operating systems will handle duplicate notifications from Messages, Calendar, or other apps that are getting the same updates on both platforms).

Enlarge (credit: Apple)

The biggest feature in iOS 18, the one that affects the most people, was a single item in a comma-stuffed sentence by Apple software boss Craig Federighi: "Support for RCS."

As we noted when Apple announced its support for "RCS Universal Profile," a kind of minimum viable cross-device rich messaging, iPhone users getting RCS means SMS chains with Android users "will be slightly less awful." SMS messages will soon have read receipts, higher-quality media sending, and typing indicators, along with better security. And RCS messages can go over Wi-Fi when you don't have a cellular signal. Apple is certainly downplaying a major cross-platform compatibility upgrade, but it's a notable quality-of-life boost.

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  Prioritized notifications through Apple Intelligence

Apple Intelligence, the new Siri, and the iPhone

iOS 18 is one of the major beneficiaries of Apple's AI rollout, dubbed "Apple Intelligence." Apple Intelligence promises to help iPhone users create and understand language and images, with the proper context from your phone's apps: photos, calendar, email, messages, and more.

Enlarge / A Mac virtual monitor in visionOS 2. (credit: Samuel Axon)

CUPERTINO, Calif.—Apple kicked off the keynote for its annual developer conference by announcing a new version of visionOS, the operating system that runs on the company's pricey but impressive Vision Pro mixed reality headset.

The updates in visionOS 2 are modest, not revolutionary—mostly iterative changes, quality-of-life improvements, and some features that were originally expected in the first version of visionOS. That's not too surprising given that visionOS just went out to users four months ago.

Vision Pro users hoping for multiple virtual Mac monitors will be disappointed that's not planned this time around, but Apple plans to add the next-best thing: Users will be able to take advantage of a larger and higher-resolution single virtual display, including a huge, wraparound ultrawide monitor mode that Apple says is equivalent to two 4K monitors.

Enlarge (credit: Getty | Yui Mok)

The strain of H5N1 bird flu isolated from a dairy worker in Texas was 100 percent fatal in ferrets used to model influenza illnesses in humans. However, the virus appeared inefficient at spreading via respiratory droplets, according to newly released study results from the Centers for Disease Control and Prevention.

The data confirms that H5N1 infections are significantly different from seasonal influenza viruses that circulate in humans. Those annual viruses make ferrets sick but are not deadly. They have also shown to be highly efficient at spreading via respiratory droplets, with 100 percent transmission rates in laboratory settings. In contrast, the strain from the Texas man (A/Texas/37/2024) appeared to have only a 33 percent transmission rate via respiratory droplets among ferrets.

"This suggests that A/Texas/37/2024-like viruses would need to undergo changes to spread efficiently by droplets through the air, such as from coughs and sneezes," the CDC said in its data summary. The agency went on to note that "efficient respiratory droplet spread, like what is seen with seasonal influenza viruses, is needed for sustained person-to-person spread to happen."