fidzu : geek

alternative_right writes: A new technology has been proposed that could fundamentally solve the issue of smartphones overheating during high-spec gaming or extended video streaming. Researchers at KAIST have discovered the principle of processing signals using the minute vibrations of magnets (spin waves) instead of electrons. This method significantly reduces heat generation and power consumption while enabling instantaneous frequency switching within the several GHz range. This breakthrough is expected to pave the way for smart devices with less heat and longer battery life, as well as ultra-low-power, high-speed computing. Professor Kab-Jin Kim from the Department of Physics said: "This study is a case that proves we can implement and control the nonlinear dynamics of magnons -- the principle of information processing using magnetic vibrations -- in actual nano-devices, which had previously only been proposed in theory. It will serve as an important foundation for the development of a new information processing paradigm using spin waves instead of electrons." The findings have been published in the journal Nature Communications.

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23 Apr 2026 7:00am GMT

An anonymous reader quotes a report from the Guardian: Nearly half of children in the United States are breathing dangerous levels of air pollution, according to a new report, as experts warned Donald Trump's expansive rollback of protections will make the situation worse. The 27th annual air quality report from the American Lung Association (ALA) released on Wednesday evaluates pollution across the country by grading levels of ground-level ozone -- also known as smog -- as well as year-round and short-term spikes in particle pollution, commonly referred to as soot. The report analyzed quality-assured data collected between 2022 and 2024. It found that 33.5 million children in the US -- 46% of those under 18 -- live in areas that received a failing grade for at least one measure of air pollution. The report also found that 7 million children, or 10% of all children in the US, live in communities that failed all three measures. The report further found that communities of color are disproportionately exposed to unhealthy air. As a result, they are more likely to live with one or more chronic health conditions that make them more vulnerable to pollution, including asthma, diabetes, and heart disease. Although people of color make up 42.1% of the US population, they represent 54.2% of those living in counties with at least one failing grade, the report noted. It also found that a person of color is 2.42 times more likely than a white person to live in a community that fails all three pollution measures. Smog remains the most widespread pollutant affecting Americans' health. Between 2022 and 2024, 38% of the US population -- approximately 129.1 million people -- were exposed to ozone levels that put their health at risk. This marks the highest number recorded in the ALA's report in six years, and a 3.9 million increase from the previous year. Several factors contributed to these unhealthy pollution levels, including extreme heat, drought and wildfires which have exposed a growing share of the population to harmful ozone, the report said. The regions most affected by high ozone levels include south-western states from California to Texas, as well as much of the midwest. This is mainly driven by smoke from Canada's 2023 wildfires crossing into the US, along with high temperatures and weather patterns that favored ozone formation in 2023 and 2024 -- particularly in southern states. More broadly, the report found that climate change is intensifying ozone pollution by boosting precursor emissions and creating atmospheric conditions such as higher temperatures and lower wind speeds that allow pollutants to build up and ozone to form. Another growing source of pollution: datacenters. The report notes how they rely on regional electricity grids where fossil fuels like methane gas and coal still account for a large portion of generation. Many datacenters also use dozens of large diesel-powered backup generators, which emit carcinogenic particulate matter. "Children's lungs are still developing," said Will Barrett, assistant vice-president of the ALA's Nationwide Clean Air Policy. "For their body size, they're breathing more air. And also, kids play outdoors, they're more active, they're breathing in more outdoor air [...]. So, air pollution exposure in children can contribute to long-term developmental harm to their lungs, new cases of asthma, increased risks of respiratory illness and other health considerations later in life."

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23 Apr 2026 3:30am GMT

Ancient Slashdot reader Alain Williams shares a report from the BBC: The Trump family's World Liberty crypto venture is being sued by one of its billionaire backers over allegations of extortion. Justin Sun has accused World Liberty of an "illegal scheme" to seize his WLFI tokens, a cryptocurrency issued by the company. Sun alleges the firm, co-founded by U.S. President Donald Trump and his son Eric Trump, has "frozen" all of his tokens and stripped him of his right to vote on governance issues. [...] Sun alleged that those running World Liberty, including another co-founder, Chase Herro, are using it as a "golden opportunity to leverage the Trump brand to profit through fraud." In his complaint, filed on Tuesday in a San Francisco federal court, Sun argues that initial promises to give token-holders the option to trade the currency in future "were false and misleading." While the tokens at large became tradeable, Sun said World Liberty has blocked him from being able to sell a single one, and is now threatening to "burn" his - deleting them entirely. WLFI said in a post on X: "Does anyone still believe @justinsuntron? Justin's favorite move is playing the victim while making baseless allegations to cover up his own misconduct. Same playbook, different target. WLFI isn't the first. We have the contracts. We have the evidence. We have the truth. See you in court pal."

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22 Apr 2026 11:00pm GMT

Ship attacked by Iran after possibly falling for safe passage crypto scam.

22 Apr 2026 10:07pm GMT

Car sales are up, battery sales and emissions credits are down.

22 Apr 2026 9:16pm GMT

You can find beauty in the oddest of places. WSL9x runs a modern Linux kernel (6.19 at time of writing) cooperatively inside the Windows 9x kernel, enabling users to take advantage of the full suite of capabilities of both operating systems at the same time, including paging, memory protection, and pre-emptive scheduling. Run all your favourite applications side by side - no rebooting required! ↫ Hailey Somerville Yes, this is exactly what it sounds like. Hailey Somerville basically recreated the first version of WSL - or coLinux, for the old people among us - but instead of running on Windows NT, it runs on Windows 9x. A VxD driver loads a patched Linux kernel using DOS interrupts, and this Linux kernel calls Windows 9x kernel APIs instead of POSIX APIs. A small DOS client application then allows the Linux kernel to use MS-DOS prompts as TTYs. This is a great oversimplification, but it does get the general gist across. Anyway, the end result is that you can use a modern Linux kernel and Windows 9x at the same time, without virtualising or dual-booting. This might be one of the greatest hacks in recent times, and I find it oddly beautiful in its user-facing simplicity.

22 Apr 2026 8:47pm GMT

How Ars Technica uses, and doesn't use, generative AI.

22 Apr 2026 8:40pm GMT

Despite years of apparent stagnation and reported mass layoffs, it seems the Solaris team at Oracle has found somewhat of a renewed stride recently. Both branches of Solaris - the one for paying customers (SRU) and the free one for enthusiasts (CBE) - are receiving regular updates again, and there seems to be a more concerted effort to let the outside world know, too. We've got another update to the SRU branch this week which brings updates to a few important open source packages, like Django, Firefox, Thunderbird, Golang, and others, to address security issues. In addition, this update marks as a change in the release cadence for the commercial branch of Solaris. From here on out, there will be two "Critical Patch Updates" per quarter to address security issues, followed by a Support Repository Update containing new features and larger changes.

22 Apr 2026 8:33pm GMT

I need to post about this because if I don't, people will get mad. Cook will continue on as Apple CEO through the summer, with Ternus set to join Apple's Board of Directors and take over as CEO on September 1, 2026. Cook is going to transition to chairman of the board at Apple, and he will "assist with certain aspects of the company, including engaging with policymakers around the world." ↫ Juli Clover at MacRumors This concludes OSNews' coverage of Keeping Up With the Yacht Class, but rest assured, every other tech site will be milking this for weeks to come. You will still be worrying about how to pay for your next tank of gas.

20 Apr 2026 10:04pm GMT

My thoughts on AI-assisted programming.

11 Apr 2026 12:00am GMT

I have discovered and shared ~800 open source Rust CLI projects over the past 3 years.

03 Apr 2026 12:00am GMT

All I wanted was to learn how to play guitar, but ended up building a DIY kit for it.

28 Mar 2026 12:00am GMT