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09 May 2026 7:23am GMT

sciencehabit shares a report from Science Magazine: Cold War spies planted bugs in walls, lamps, and telephones. Now, scientists warn, the cables themselves could listen in. A fiber optic technique used to detect earthquakes can also pick up the faint vibrations of nearby speech, researchers reported this week here at the general assembly of the European Geosciences Union. Freely available artificial intelligence (AI) software turned the fiber optic data into intelligible, real-time transcripts. "Not many people realize that [fiber optic cables] can detect acoustic waves," says Jack Lee Smith, a geophysicist at the University of Edinburgh who presented the result. "We show that in almost every case where you use these fibers, this could be a privacy concern." Fiber optics can pick up on sound through a technique called distributed acoustic sensing (DAS). Using a machine called an interrogator, researchers fire laser pulses down a cable and record the pattern of reflections coming back from tiny glass defects along the length of the fiber optic. When an earthquake's seismic wave crosses a section of the fiber, it stretches and squeezes the defects, leading to shifts in the reflected light that researchers can use to build a picture of an earthquake. DAS essentially turns a fiber cable into a long chain of seismometers that can detect not only earthquakes, but also the rumblings of volcanoes, cars, and college marching bands. And although scientists set up dedicated fiber lines specifically for research, DAS can also be performed on "dark fiber" -- unused strands in the web of fiber optics that runs through cities and across oceans, carrying the world's internet traffic. DAS can also be used to eavesdrop, the work of Smith and his colleagues shows. They conducted a field test using an existing DAS setup used to study coastal erosion. They set a speaker next to the cable and played pure tones, music, and speech. Human speech contains frequencies ranging from a few hundred to several thousand hertz. The low end of the range could be pulled out of the data "even without any preprocessing," Smith says. "You can easily see acoustic waves." Getting higher frequency speech took a bit of postprocessing, but it was possible. Dumping the data directly into Whisper, a free AI transcription tool, provided accurate real-time transcription. However, this technique worked only for coiled cables, exposed at the surface, at distances of up to 5 meters from the speaker. Burying the cable under just 20 centimeters of dirt was enough to muddy the speech. And straight cables -- even exposed ones right next to the speaker -- did not record speech well.

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09 May 2026 7:00am GMT

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09 May 2026 5:52am GMT

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09 May 2026 4:53am GMT

An anonymous reader quotes a report from the Guardian: Walking into Mexico City's sprawling central Zocalo is a dizzying experience. At one end of the plaza, the capital's cathedral, with its soaring spires, slumps in one direction. An attached church, known as the Metropolitan Sanctuary, tilts in the other. The nearby National Palace also seems off-kilter. The teetering of many of the capital's historic buildings is the most visible sign of a phenomenon that has been ongoing for more than a century: Mexico City is sinking at an alarming rate. Now, the metropolis's descent is being tracked in real time thanks to one of the most powerful radar systems ever launched into space. Known as Nisar, the satellite can detect minute changes in Earth's surface, even through thick vegetation or cloud cover. "Nisar takes radar imaging observations of Earth to the next level," said Marin Govorcin, a scientist at Nasa's jet propulsion laboratory. "Nisar will see any change big or small that happens on Earth from week to week. No other imaging mission can claim this." Though not the first time that Mexico City's sinking has been observed from space, the Nisar mission has provided a greater sense of how far the sinking spreads and how it changes across different types of land than any other space-based sensor. It has also been able to penetrate areas on the outskirts of the city that were previously challenging to study because of the complex terrain. The implications of the imagery extend far beyond the Mexican capital. "This study of Mexico City speaks to the realm of possibilities that will open up thanks to the Nisar system," said Dario Solano-Rojas, an engineer at the National Autonomous University of Mexico (Unam). "And not just for sinking cities but also for studying volcanoes, for studying the deformation associated with earthquakes, for studying landslides." According to Nasa, the technology is also capable of monitoring the climate crisis, glacier sliding, agricultural productivity, soil moisture, forestry, coastal flooding and more. The Nisar system found that some parts of the city are dropping by more than 2cm a month. "First documented in 1925, the city's sinking is a result of centuries of exploitation of the groundwater," the report says. "Because Mexico City and its surrounds were built on an ancient lake bed, the soil beneath the city is extremely soft. When water is pumped out of the aquifer below, this clay-like earth compacts, resulting in a city that is quietly sinking." The crisis is also self-reinforcing: as the city sinks, aging pipes crack and leak, causing Mexico City to lose an estimated 40% of its water, even as drought and climate change make supplies more fragile.

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09 May 2026 3:30am GMT

It's hard to mix electronic manufacturing and flexible geometry.

08 May 2026 11:13pm GMT

Longtime Slashdot reader cellocgw writes: Hiding inside another layoff report, Fidelity is reorganizing: "The changes are aimed at moving the teams away from an 'agile' makeup -- comprising smaller, siloed squads -- and toward larger teams built to move faster on projects." OMG, as they say: "Sudden outbreak of common sense." According to the Boston Globe, Fidelity is cutting about 1,000 jobs even as it plans to hire roughly 5,300 new workers, many of them early-career engineers. Half of the 3,300 new workers hired this year "will be in tech or product-related roles," the report says, noting that "about 2,000 of those jobs are currently open, and 400 of them are in tech/product-delivery." "The company also plans to add almost 2,000 new early-career workers, with the goal of making the tech and product-delivery teams more hands-on. In all, that means roughly 5,300 new jobs in the pipeline for Fidelity." The company says AI isn't driving the shift; as cellocgw noted, it's about moving toward larger teams that Fidelity says can move faster on priority projects. The financial services firm also reported a strong 2025 under CEO Abigail Johnson, with managed assets rising 19% from 2024 to $7.1 trillion and revenue climbing 15% to $37.7 billion. "Throughout the company's history, our investments in technology have fueled our growth and customer service capabilities," Johnson wrote in a letter (PDF) included in the company's annual report. "We will continue to prioritize technology initiatives that help us advance digital capabilities, simplify our technology ecosystem, and protect the firm and our customers."

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08 May 2026 11:00pm GMT

The plan isn't final and could change, but his ouster would be no surprise.

08 May 2026 10:10pm GMT

FCC chair hasn't been able to bully ABC and owner Disney into submission.

08 May 2026 9:08pm GMT

Linux kernel developers are reviewing a killswitch proposal that can disable vulnerable functions after recent CVE disclosures.

08 May 2026 8:36pm GMT

TUXEDO BM15 is a repairable Linux business laptop with smart card authentication, optional 4G LTE, and upgradeable RAM and storage.

08 May 2026 3:55pm GMT

KDE Frameworks 6.26 is out with updates across KIO, Baloo, Kirigami, KCalendarCore, KImageformats, and more.

08 May 2026 3:18pm GMT