sciencehabit shares a report from Science.org: The newly discovered microbe provisionally known as Sukunaarchaeum isn't a virus. But like viruses, it seemingly has one purpose: to make more of itself. As far as scientists can tell from its genome -- the only evidence of its existence so far -- it's a parasite that provides nothing to the single-celled creature it calls home. Most of Sukunaarchaeum's mere 189 protein-coding genes are focused on replicating its own genome; it must steal everything else it needs from its host Citharistes regius, a dinoflagellate that lives in ocean waters all over the world. Adding to the mystery of the microbe, some of its sequences identify it as archaeon, a lineage of simple cellular organisms more closely related to complex organisms like us than to bacteria like Escherichia coli.

The discovery of Sukunaarchaeum's bizarrely viruslike way of living, reported last month in a bioRxiv preprint, "challenges the boundaries between cellular life and viruses," says Kate Adamala, a synthetic biologist at the University of Minnesota Twin Cities who was not involved in the work. "This organism might be a fascinating living fossil -- an evolutionary waypoint that managed to hang on." Adamala adds that if Sukunaarchaeum really does represent a microbe on its way to becoming a virus, it could teach scientists about how viruses evolved in the first place. "Most of the greatest transitions in evolution didn't leave a fossil record, making it very difficult to figure out what were the exact steps," she says. "We can poke at existing biochemistry to try to reconstitute the ancestral forms -- or sometimes we get a gift from nature, in the form of a surviving evolutionary intermediate."

What's already clear: Sukunaarchaeum is not alone. When team leader Takuro Nakayama, an evolutionary microbiologist at Tsukuba, and his colleagues sifted through publicly available DNA sequences extracted from seawater all over the world, they found many sequences similar to those of Sukunaarchaeum. "That's when we realized that we had not just found a single strange organism, but had uncovered the first complete genome of a large, previously unknown archaeal lineage," Nakayama says.

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Longtime Slashdot reader UnknowingFool writes: A new documentary released last week on Netflix goes into detail about events leading up to the destruction of OceanGate's submersible, Titan that imploded on June 18, 2023 while attempting to visit the wreckage of the RMS Titanic off the coast of Newfoundland. The Titan used a carbon-fiber hull instead of more traditional materials like steel or titanium. "Through exclusive access to whistleblower testimony, pivotal audio recordings, and footage from the company's early days, the film provides an unprecedented look at the technical challenges, moral dilemmas, and shockingly poor decisions that culminated in the catastrophic expedition," explains Netflix in an article.

Some highlights:
- Titan's original carbon-fiber hull had been replaced with a second carbon-fiber one after the first one developed noticeable cracks.
- Three scale models of the second hull failed tests. OceanGate decided to manufacture the second hull regardless of these failures.
- Loud pops were heard in many dives; CEO Stockton Rush dismissed these as "seasoning".
- Many employees raised numerous safety concerns. They were fired like lead pilot and head of marine operations, David Lochridge. Or they quit.
- Some employees like Emily Hammermeister wanted to quit earlier, but external conditions like the COVID pandemic made it difficult. After the scale models failed, she refused to bolt anyone in the future submersible. She was given the two options of being fired or quit; she quit in the middle of the pandemic.
- Rush's blindness to inconvenient facts: After the crack was discovered, Rush questioned Director of Engineering, Tony Nissen, about why Nissen did not anticipate the possibility of a crack. Nissen: "I wrote you a report that showed you it was there." Nissen had warned repeatedly that the hull's fibers were breaking (the pops) with each dive. Rush: "Well, one of us has to go."
- Poor decisions by Rush extended beyond engineering decisions. After Rush fired Lochridge for raising safety concerns , Rush wanted Bonnie Carl, the company's accountant, to be his replacement pilot. While Carl was an experienced scuba diver, she quit as she was extremely uncomfortable being a pilot. Her explanation: "Are you nuts? I'm an accountant."

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A new benchmark assembled by a team of International Olympiad medalists suggests the hype about large language models beating elite human coders is premature. LiveCodeBench Pro, unveiled in a 584-problem study [PDF] drawn from Codeforces, ICPC and IOI contests, shows the best frontier model clears just 53% of medium-difficulty tasks on its first attempt and none of the hard ones, while grandmaster-level humans routinely solve at least some of those highest-tier problems.

The researchers measured models and humans on the same Elo scale used by Codeforces and found that OpenAI's o4-mini-high, when stripped of terminal tools and limited to one try per task, lands at an Elo rating of 2,116 -- hundreds of points below the grandmaster cutoff and roughly the 1.5 percentile among human contestants. A granular tag-by-tag autopsy identified implementation-friendly, knowledge-heavy problems -- segment trees, graph templates, classic dynamic programming -- as the models' comfort zone; observation-driven puzzles such as game-theory endgames and trick-greedy constructs remain stubborn roadblocks.

Because the dataset is harvested in real time as contests conclude, the authors argue it minimizes training-data leakage and offers a moving target for future systems. The broader takeaway is that impressive leaderboard jumps often reflect tool use, multiple retries or easier benchmarks rather than genuine algorithmic reasoning, leaving a conspicuous gap between today's models and top human problem-solvers.

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AI use among U.S. workers has nearly doubled over two years, with 40% of employees now using artificial intelligence tools at least a few times annually, up from 21% in 2023, according to new Gallup research.

Daily AI usage has doubled in the past year alone, jumping from 4% to 8% of workers. The growth concentrates heavily among white-collar employees, where 27% report frequent AI use compared to just 9% of production and front-line workers.

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Veteran columnist Steven J. Vaughan-Nichols declared that Firefox was "dead" to him in a scathing opinion piece Tuesday that cites Mozilla's strategic missteps and the browser's declining technical performance as evidence of terminal decline. Vaughan-Nichols argues that Mozilla has fundamentally betrayed user trust by removing a longstanding promise never to sell personal data from its privacy policy in February, replacing it with a weaker pledge to "protect your personal information."

The veteran technology writer also criticized Mozilla's decision to discontinue Pocket, a popular article-saving service, and Fakespot, which identified fake online reviews, while pursuing what he called a misguided AI strategy. He cited user reports of Firefox running up to 30% slower than Chrome, consuming excessive memory, and failing to properly load major websites. Mozilla has also become financially more vulnerable, he argued, noting CFO Eric Muhlheim's admission that the company depends on Google for 90% of its revenue. According to federal data he cited, Firefox holds just 1.9% of the browser market, leading him to conclude the browser is "done."

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Meetings starting after 8 p.m. are up 16% compared to a year ago, and at 10 p.m. almost a third of active workers are still monitoring their inboxes, according to research from Microsoft. Bloomberg: The company's annual work trends study, which is based on aggregated and anonymized data from Microsoft 365 users and a global survey of 31,000 desk workers, also found that almost 20% of employees actively working weekends are checking email before noon on Saturdays and Sundays [non-paywalled source], while over 5% are active on email again on Sunday evenings, gearing up for the start of the work week.

[...] Meetings are often spontaneous. Some 57% of the gatherings tallied by Microsoft came together without a calendar invite, and even 10% of scheduled meetings were booked at the last minute. [...] Mass emails, those which loop in more than 20 participants, are on the rise, climbing 7% from last year.

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