186062076
submission
necro81 writes:
Two groups, one in Vienna and one in Beijing, have successfully demonstrated the world's first nuclear clocks. Standard atomic clocks, like the caesium clocks that define the second, operate by observing the transition of electrons between different orbits about the nucleus. The resulting radiation is usually in the microwave range, and can produce clocks accurate to one second in 100 billion years.
Nuclear clocks go a step further, and probe energy transitions within the nucleus itself. Nuclei can arrange their protons and neutrons into different configurations, called isomers. The isomer with the lowest energy is the one usually found; higher-energy ones are only metastable and decay quickly. Usually it takes serious energy — x-rays and gamma rays — to excite a nucleus into a higher-energy arrangement. It so happens that thorium-229 can be excited using UV light with a wavelength of 148 nm — just within the capabilities of some exotic lasers.
It's still been quite a challenge. For one thing, Th-229 is not found in nature; it must be extracted from the decay chain of uranium-235. The Beijing team used just a microgram mixed in a crystal of calcium fluoride.
Although these prototype nuclear clocks are not yet more accurate than existing atomic clocks (one second in millions, rather than billions, of years), they show the way towards what may be possible. Because the energy transition is in the nucleus, rather than the electron cloud, it is less susceptible to outside disturbances like magnetic fields. And the fundamental frequency is much higher (five orders of magnitude), which should yield more precise timing. This development could lead to smaller and more reliable time standards across the world (and solar system).
186061440
submission
schwit1 writes:
The new Roadster, a sequel to Tesla’s first car, was first unveiled in November 2017. Tesla has accepted reservations for the sports car off and on since, with hopeful owners paying at least $50,000, and sometimes much more, to get on the wait list.
Tesla originally said production would begin in 2020. That didn’t happen.
Tesla is now moving forward with what is likely to be its most expensive model in company history even as its core auto business has taken a back seat. Musk has said that the new Roadster will be the final human-driven vehicle that Tesla ever produces because the company’s future lies in autonomy, artificial intelligence and robotics. The automaker didn’t respond to a request for comment.
Bringing an ultracostly, niche vehicle to market could improve the company’s cash flow while longer-term bets, like humanoid robotics, might take a while to pay off, said Jon McNeill, a former Tesla president.
“I think Ferrari proves the point that you can make a lot of money in the automotive business at low volumes, at a high price point,” McNeill said.
Musk in 2017 said the car would be able to go from zero to 60 miles an hour in 1.9 seconds, top 250 miles an hour and drive up to 620 miles on a full charge. He upped the ante in 2024 by saying that the Roadster would hit 60 mph from zero in less than one second. “And that is the least interesting part,” he said.
186059320
submission
Bruce66423 writes:
'The nutritional value of fruit and vegetables has fallen by up to 50pc since the Sixties because of declining soil quality, according to a new study.
'The study found that many crops had lost 20pc to 50pc of several key nutrients.
'Will Summers, a senior associate at the firm, said: “For 60 years we’ve measured food security in calories and tonnes per hectare.
'“On those measures we’ve done remarkably well. But we’ve been quietly hollowing out what’s inside our food.”
'The decrease in nutrient and vitamin value is thought to be down to declining soil quality and crops being selectively bred for their ability to grow quickly, rather than there being any focus on their health benefits.'
185887700
submission
Andreas(R) writes:
Northstar Browser is a new web browser, now available in version 1.0.11. Source code available on the Github project. Northstar is free software, licensed under the GNU General Public License, version 3 or later. It is not based on Firefox or Chrome.
185848152
submission
joshuark writes:
404 Media has found multiple contractors hired to improve OpenAI’s models have been fired for using AI to train the AI. That’s not great for the models themselves, but there is also obviously a great irony in AI training companies working for OpenAI firing people for using AI when OpenAI’s whole thing is to make people use AI at work.
“I did feel guilty about doing this kind of work at the start,” they said. “I either pay zero attention to the results and choose randomly or purposely choose the [worst] output. I’m not sure how much of a difference it actually makes since there are hundreds of other people also rating prompt results, but it does feel like I’m getting paid to make AI worse.”
OpenAI declined to comment on its contractors being fired for using AI.
“I’m not a bad person or worker. I just needed a little boost and turned to AI to help me which eventually led to my downfall,” the contractor told 404 Media. “I felt no joy in the work or that I was contributing to society in any way.”
185734670
submission
BrianFagioli writes:
For years, students were told that learning to code was one of the safest paths into a lucrative technology career. New data suggests that message may be losing some of its pull. Nova Learning says the share of surveyed middle and high school students naming Computer Science and AI as their primary academic interest fell from 42.3 percent in 2025 to 27.9 percent in 2026, while Engineering rose from 11.9 percent to 23 percent. The biggest gains came from Mechanical and Aerospace Engineering, while Software and Data Science saw a steep drop.
The survey is not nationally representative, but broader enrollment data points in the same direction. The National Student Clearinghouse Research Center reported declines in Computer and Information Science enrollment at four year institutions, even as Engineering grew. AI coding tools are not proven to be the cause, but as software development changes and AI handles more coding tasks, students may be starting to rethink what a future in technology should look like.
185731952
submission
fahrbot-bot writes:
Interesting Engineering is reporting that researchers at the University of Groningen in the Netherlands found that tin-based perovskite solar cells can slow heat loss from high-energy “hot electrons” by a factor of 1,000 and could push solar cell efficiency beyond the theoretical 33 percent limit.
When sunlight strikes a panel, photons jump-start electrons into action. The most energetic photons create super-charged hot electrons. Theoretically, these high-voltage powerhouses should generate far more electricity, but, in practice, they are fleeting. In fractions of a trillionth of a second, these high-energy particles rapidly cool, dumping their bonus energy as waste heat before ever leaving the solar cell.
“This means that the energy is lost before the hot electron exits the solar cell material,” said Jan Anton Koster, Professor of Physics of Novel Semiconductors and Devices at the University of Groningen.
Using a specialized solar cell material called tin-based perovskite, Loi’s lab performed a feat many thought impossible: she slowed the heat loss down by a factor of 1,000. Suddenly, the extra energy lingered for nanoseconds instead of vanishing in picoseconds.
The study findings were published in the journal ACS Energy Letters.
185712482
submission
Beeftopia writes:
From Stanford Medicine:
"For centuries, scientists have thought of the brain as a single, unified organ. But new research led by Stanford Medicine reveals that what we call the brain is two distinct organs that evolved independently over hundreds of millions of years."
The adult brain has three main regions: the forebrain, midbrain and hindbrain. Scientists could never create hindbrain neurons.
"Previous attempts to make hindbrain neurons likely tried to coax forebrain and midbrain progenitors into hindbrain cells, which our study shows is not possible,” said researcher Rayyan Jokhai.
"The researchers’ breakthrough came from studying the earliest moments of embryonic development, during a stage called gastrulation when the body first takes shape. Jokhai and Dundes discovered that the hindbrain follows a separate developmental path, running in parallel to — rather than branching off from — the pathway that creates the forebrain and midbrain."
With this knowledge, researchers were able to create hindbrain neurons.
185670266
submission
golem100 writes:
A couple weeks ago PCMag, and others, wrote articles along the lines of: "Microsoft Finally Backs Down: The Windows 11 Taskbar Update You've Been Waiting For". This is currently implemented with CU KB5120998 and since M$ has elected to defer "activation" of this feature--some two weeks later for most users it still needs to be enabled by the ViVe tool: vivetool /enable /id:59213768,61090762
Um, No...
The fundamental set of [lost] attributes that this "We brought Movable TaskBar back" lacks:
You can not control the position of the TaskBar on each desktop monitor--example: I have four displays on my desktop, three Landscape & one of which is in a Portrait orientation for reading documents.
With Windows7/8/10 you could position the TaskBar so that it was "Out of the way" and each display--on the right side of the right-most Landscape, on the left for the left-most Landscape display, & on the top/bottom for the Portrait. [same as my desktop on my Linux workstation]
Now you still get the same Taskbar alignment on all desktops.
You can not "resize" the taskbar. (well, you can--it has three sizes: too big, too small, and really way too small) For the previous three generations of the OS you could "Drag-Select" and resize the TaskBar to be the correct size for your needs on your desktop. [...just as I can on my KDE Desktop!]
With this implementation, 1/3 of the Taskbar real estate is consumed with "TaskBar-Tray Notification Icons."
Nobody asked for a partial, broken, re-implementation. The ask was: "Put it Back as it was!"
Dealing with M$ is pretty much like getting your 15 year old to do their chores on garbage night.
185668710
submission
alternative_right writes:
While much of the automatic license plate readerâ(TM)s (ALPR) most sensitive storage remained encrypted and inaccessible, the joint analysis of the recovered data shows that software running on the device explicitly detects people as well as vehicles, license plates, and bicycles. The camera can produce dozens of images of a single passing vehicle and, according to several weeks of recovered logs, generated more than a million images. Its computer-vision software also sometimes isolated bumper stickers and other graphics, including, in one case, an American flag patch on a motorcyclistâ(TM)s saddlebag.
185654154
submission
fjo3 writes:
China’s top spy chief has warned that artificial intelligence could pose a direct threat to the Chinese Communist Party’s hold on power, in what is the highest-level and most detailed articulation yet of how Beijing sees the technology’s security risks.
The unusually blunt assessment by Chen Yixin, the head of China’s Ministry of State Security, is in contrast to the warnings dominating the AI debate in the United States, which have focused on the possibility that AI could slip out of human control or pose a threat to humanity itself.
In an article published Sunday in the state-run magazine China Cyberspace, Chen called for more party control over AI and stricter government oversight. This, he said, was necessary to protect political stability at home; to defend against increasingly sophisticated cyberattacks and misinformation campaigns from “hostile forces”; and to compete militarily with countries like the United States.
185640134
submission
fjo3 writes:
As of July 7, all new passenger vehicles sold in the E.U. had to come equipped with "advanced driver distraction warning" systems that watch for signs of "distraction" and, upon detecting them, issue a visual and an audio or tactile warning. Cars will warn drivers whose gaze drifts for more than three to six seconds, depending on their speed.
To comply with this mandate, cars will have to fix cameras on drivers' faces at all times, turning private motor vehicles into efficient surveillance systems. The equipment is supposed to operate as a "closed-loop system," meaning it "shall only continuously record and retain data necessary for the system to function and operate." But it is not clear how that rule will be enforced.
Beyond privacy concerns, some critics worry that the system itself will become a dangerous distraction, issuing warnings every time a driver changes the radio station or glances at a passenger. Others have complained that the requirement will increase auto costs.
185611086
submission
ptorrone writes:
Adafruit has published CircuitPython Turbo, a workflow that compiles selected Python functions into native machine code on a computer, then loads them onto compatible microcontroller boards. It builds on MicroPython's Native and Viper emitters. In a documented Metro RP2040 fixed-point Mandelbrot test, Viper cut computation time from 8.335 seconds to 0.423 seconds, a 19.71x speedup over bytecode. The rest of the application stays in Python. The guide includes benchmarks, source code and hardware demos. The speedup is for the measured computation, not the whole application.
185584744
submission
Mirnotoriety writes:
Independent Review of NATS (En Route) Plc’s Flight Planning System Failure on 28 August 2023
A perfectly legitimate flight plan triggered a previously undiscovered software edge case. Both NATS's primary and backup flight-processing systems hit the same error and shut themselves down.
Once both systems were down, NATS's manual fallback could process only about 60 flight plans/hour, versus roughly 700–900/hour normally. That forced severe traffic restrictions.
What actually crashed? The failed component was FPRSA-R, NATS's flight-plan processing system at Swanwick. The flight was Los Angeles Paris Orly. Its flight plan contained a waypoint abbreviated DVL. DVL can refer to Deauville, France, but also Devil's Lake, North Dakota. Eurocontrol's processing had added additional waypoints to the flight plan.
FPRSA-R was trying to determine where the aircraft would leave UK airspace. It encountered the DVL abbreviation and interpreted the wrong DVL as the exit point. The result was logically impossible: the aircraft appeared to leave UK airspace before it had entered it. The software recognised this as an impossible situation and generated a critical exception. The primary system disconnected from the operational network and entered maintenance mode.
185573374
submission
alternative_right writes:
A new analysis of more than 1,700 supernovae is questioning whether the universe is really accelerating at all. After accounting for the ages of the stars that produce these explosions, researchers found signs that cosmic expansion may actually be slowing. They also argue that the apparent acceleration changes with direction, which would be difficult to explain with dark energy. Other cosmologists dispute the conclusion, setting up a major test for upcoming observatories.
