Julia Simon reports via NPR: In a D.C. courtroom, a trial is wrapping up this week with big stakes for climate science. One of the world's most prominent climate scientists is suing a right-wing author and a policy analyst for defamation. The case comes at a time when attacks on scientists are proliferating, says Peter Hotez, professor of Pediatrics and Molecular Virology at Baylor College of Medicine. Even as misinformation about scientists and their work keeps growing, Hotez says scientists haven't yet found a good way to respond. "The reason we're sort of fumbling at this is it's unprecedented. And there is no roadmap," he says. The climate scientist at the center of this trial is Michael Mann. The professor of earth and environmental science at the University of Pennsylvania gained prominence for helping make one of the most accessible, consequential graphs in the history of climate science. First published in the late 1990s, the graph shows thousands of years of relatively stable global temperatures. Then, when humans start burning lots of coal and oil, it shows a spike upward. Mann's graph looks like a hockey stick lying on its side, with the blade sticking straight up. The so-called "hockey stick graph" was successful in helping the public understand the urgency of global warming, and that made it a target, says Kert Davies, director of special investigations at the Center for Climate Integrity, a climate accountability nonprofit. "Because it became such a powerful image, it was under attack from the beginning," he says.

The attacks came from groups that reject climate science, some funded by the fossil fuel industry. In the midst of these types of attacks -- including the hacking of Mann's and other scientists' emails by unknown hackers -- Penn State, where Mann was then working, opened an investigation into his research. Penn State, as well as the National Science Foundation, found no evidence of scientific misconduct. But a policy analyst and an author wrote that they were not convinced. The trial in D.C. Superior Court involves posts from right-wing author Mark Steyn and policy analyst Rand Simberg. In an online post, Simberg compared Mann to former Penn State football coach Jerry Sandusky, a convicted child sex abuser. Simberg wrote that Mann was the "Sandusky of climate science," writing that Mann "molested and tortured data (PDF)." Steyn called Mann's research fraudulent. Mann sued the two men for defamation. Mann also sued the publishers of the posts, National Review and the Competitive Enterprise Institute, but in 2021, the court ruled they couldn't be held liable.

In court, Mann has argued that he lost funding and research opportunities. Steyn said in court that if Penn State's president, Graham Spanier, covered up child sexual assault, why wouldn't he cover up for Mann's science. The science in question used ice cores and tree rings to estimate Earth's past temperatures. "If Graham Spanier is prepared to cover up child rape, week in, week out, year in, year out, why would he be the least bit squeamish about covering up a bit of hanky panky with the tree rings and the ice cores?" Steyn asked the court. Mann and Steyn declined to speak to NPR during the ongoing trial. One of Simberg's lawyers, Victoria Weatherford, said "inflammatory does not equal defamatory" and that her client is allowed to express his opinion, even if it were wrong. "No matter how offensive or distasteful or heated it is," Weatherford tells NPR, "that speech is absolutely protected under the First Amendment when it's said against a public figure, if the person saying it believed that what they said was true."

Jennifer Ouellette reports via Ars Technica: A typical lawn sprinkler features various nozzles arranged at angles on a rotating wheel; when water is pumped in, they release jets that cause the wheel to rotate. But what would happen if the water were sucked into the sprinkler instead? In which direction would the wheel turn then, or would it even turn at all? That's the essence of the "reverse sprinkler" problem that physicists like Richard Feynman, among others, have grappled with since the 1940s. Now, applied mathematicians at New York University think they've cracked the conundrum, per a recent paper published in the journal Physical Review Letters -- and the answer challenges conventional wisdom on the matter. "Our study solves the problem by combining precision lab experiments with mathematical modeling that explains how a reverse sprinkler operates," said co-author Leif Ristroph of NYU's Courant Institute. "We found that the reverse sprinkler spins in the 'reverse' or opposite direction when taking in water as it does when ejecting it, and the cause is subtle and surprising." [...]

Enter Leif Ristroph and colleagues, who built their own custom sprinkler that incorporated ultra-low-friction rotary bearings so their device could spin freely. They immersed their sprinkler in water and used a special apparatus to either pump water in or pull it out at carefully controlled flow rates. Particularly key to the experiment was the fact that their custom sprinkler let the team observe and measure how water flowed inside, outside, and through the device. Adding dyes and microparticles to the water and illuminating them with lasers helped capture the flows on high-speed video. They ran their experiments for several hours at a time, the better to precisely map the fluid-flow patterns.

Ristroph et al. found that the reverse sprinkler rotates a good 50 times slower than a regular sprinkler, but it operates along similar mechanisms, which is surprising. "The regular or 'forward' sprinkler is similar to a rocket, since it propels itself by shooting out jets," said Ristroph. "But the reverse sprinkler is mysterious since the water being sucked in doesn't look at all like jets. We discovered that the secret is hidden inside the sprinkler, where there are indeed jets that explain the observed motions." A reverse sprinkler acts like an "inside-out rocket," per Ristroph, and although the internal jets collide, they don't do so head-on. "The jets aren't directed exactly at the center because of distortion of the flow as it passes through the curved arm," Ball wrote. "As the water flows around the bends in the arms, it is slung outward by centrifugal force, which gives rise to asymmetric flow profiles." It's admittedly a subtle effect, but their experimentally observed flow patterns are in excellent agreement with the group's mathematical models.

doc1623 shares a report from Ars Technica: Scientists at the University of Arizona decided to investigate whether closing the toilet lid before flushing reduces cross-contamination of bathroom surfaces by airborne bacterial and viral particles via "toilet plumes." The bad news is that putting a lid on it doesn't result in any substantial reduction in contamination, according to their recent paper published in the American Journal of Infection Control. The good news: Adding a disinfectant to the toilet bowl before flushing and using disinfectant dispensers in the tank significantly reduce cross-contamination. [...]

The scientists conducted their experiment with E. coli (as a host bacteria) and coliphage MS2; the latter is not a human or animal pathogen but serves as a useful model. The public toilet used in the experiment was located in a stall in the restroom of an office building. That toilet was tankless, relying on water-line pressure for flushing, with no lid and a U-shaped seat with a gap in the front. The home toilet was a standard siphonic toilet with a tank and lid in a private residence; there was no gap on the center of the seat. Toilet bowls were seeded with MS2 and flushed. After one minute, samples were taken from various restroom surfaces: the top and bottom of toilet seats, the bowl rim, three locations on the floor, and the right and left walls. The team also conducted a similar experiment involving cleaning the bowls with toilet brushes, both with and without Lysol toilet bowl cleaner. All those samples were then tested for MS2 contamination.

The results: both the tops and bottoms of the lidless public toilet seats had more contamination compared to household seats, but otherwise, there was no statistical significance in the degree of contamination between lidless public toilets and household toilets with lids. And the surface contamination did indeed persist even after repeated flushes. The toilet seat was the worst offender with the greatest degree of contamination, which the authors suggest "reflects the airflow that occurs during toilet flushing, i.e., largely around the top and bottom of the toilet seat." That same airflow is likely a factor in spreading the contamination to restroom floors and walls. Perhaps the least surprising finding is that rigorous cleaning with a toilet bowl brush and Lysol reduced the contamination by 99.99 percent compared to cleaning with just a brush. Therefore, "The most effective strategy for reducing restroom cross-contamination associated with toilet flushing include the addition of a disinfectant to the toilet bowl before flushing and the use of disinfectant/detergent dispensers in the toilet tank," the authors concluded. They also recommend regularly disinfecting all restroom surfaces after flushing or cleaning with a toilet brush in health care facilities -- which often have a lot of immunocompromised people -- and if someone in your house has an active infection like norovirus. The findings have been published in the journal American Journal of Infection Control.

Slashdot reader doc1623 writes: "This headline brought me joy today, so I thought I would share (I could honestly care less about reading the article but joy is joy, I take it where I can find it.)"

An anonymous reader quotes a report from TorrentFreak: With help from the FBI, German police managed to secure nearly 50,000 bitcoin (USD $2 billion) from the operators of the defunct movie streaming portal, Movie2k. [...] Movie2K was another pirate site that showed an early interest in bitcoin. In its heyday, the site was the dominant pirate streaming portal in German-speaking countries. It generated a healthy revenue stream, part of it held in bitcoin. The operator of the site never got to spend most of it though. The site surprisingly shut down in the spring of 2013. Many suspected that legal troubles had plagued the site, something confirmed years later when Dresden police announced several arrests.

It was rare to see new activity in an already-dated dossier, but the biggest surprise followed later when the police announced that $29.7m in bitcoin had been secured from the site's operators. This 'seizure' was one of the largest of its kind but the authorities estimated that the operators had more bitcoin stashed away, much more. Today, new information released by Dresden police shows that the assumption was correct.

Following an investigation carried out by the Dresden General Prosecutor's Office, the Saxony State Criminal Police, and the local tax authority (INES), nearly 50,000 bitcoin were 'provisionally' secured earlier this month. The haul is worth more than $2 billion at today's exchange rate. Never before has this much bitcoin been secured by German authorities; it's also one of the largest crypto hauls worldwide. "The Bitcoins were seized after the accused voluntarily transferred them to official wallets provided by the [Federal Criminal Police Office]. This means that a final decision has not yet been made about the utilization of the Bitcoins," police write.

Benj Edwards reports via Ars Technica: In a move that marks the end of an era, New Mexico State University (NMSU) recently announced the impending closure of its Hobbes OS/2 Archive on April 15, 2024. For over three decades, the archive has been a key resource for users of the IBM OS/2 operating system and its successors, which once competed fiercely with Microsoft Windows. In a statement made to The Register, a representative of NMSU wrote, "We have made the difficult decision to no longer host these files on hobbes.nmsu.edu. Although I am unable to go into specifics, we had to evaluate our priorities and had to make the difficult decision to discontinue the service."

Hobbes is hosted by the Department of Information & Communication Technologies at New Mexico State University in Las Cruces, New Mexico. In the official announcement, the site reads, "After many years of service, hobbes.nmsu.edu will be decommissioned and will no longer be available. As of April 15th, 2024, this site will no longer exist." The earliest record we've found of the Hobbes archive online is this 1992 Walnut Creek CD-ROM collection that gathered up the contents of the archive for offline distribution. At around 32 years old, minimum, that makes Hobbes one of the oldest software archives on the Internet, akin to the University of Michigan's archives and ibiblio at UNC.

It's the 50th anniversary of Devo, the geek-friendly, dystopia-themed band that combined synthesizers with showmanship, first founded in 1973.

As a new documentary about the group celebrates its Sundance world premiere, the Los Angeles Times explores how the band made innovative use of the technology of its time: With their yellow radiation suits, red "energy dome" hats and manic energy, part playful and part angry, the band Devo combined the futuristic glamour of new wave with atomic-age anxieties and post-'60s disillusionment.... Uniquely, the band developed a fully formed, intricate internal philosophy and mythology built around the idea that humans were "de-evolving" by becoming dumber and less sophisticated. The mascot of the band, known as "Booji Boy," was an infantile urchin in a rubber mask...

Was there an idea to document the band right from the very start? It's incredible that there's footage of the very first show in 1973.

GERALD CASALE: We were that delusional, yes. And we were trying to document ourselves when nobody was interested in doing that. And when it was quite expensive and clumsy to do it. You're dealing with Sony U-matic reel-to-reel recorders and big heavy cameras and a scarcity of equipment and very little interest. I mean, my God, if a Devo of now existed like we did, then clearly, there'd be a million cellphone videos.

MARK MOTHERSBAUGH: [...] Bob was the first of us to direct a video, back when he was in high school. Bob and me, our dad, starting when we were like babies, like 1 year old, he'd bring out an 8-millimeter camera that didn't have sound, and so he shot hundreds and hundreds of these films through the years, just family stuff. So we always kind of liked that. And Jerry was doing films at Kent State with Chuck Statler before Chuck said, "Hey, let's do a film with a couple of the songs in it." So we were always audio-visual. We were always thinking in both worlds...

[DOCUMENTARY DIRECTOR] CHRIS SMITH: One of my favorite details in looking through the old footage is, there's an early show that was recorded in black-and-white, and they have such limited materials to work with, yet they do this thing where the light goes on and off on both sides of the stage. And to me it was so emblematic of where they were going because they were making something that you hadn't seen before that was super creative and visually distinctive and interesting out of something we all had to work with... You could see in that footage, the inventiveness that wasn't a result of means — it was something that was just created out of what they had to work with at that time.

MARK MOTHERSBAUGH: [...] Sonically, a lot of what we did was just related to the fact that Bob Mothersbaugh bought a four-track TEAC. So we had this machine that could record four little skinny channels on a quarter-inch tape. It was an amateur home-tape machine, but it made us think about our parts, because we thought, well, OK, you're only going to get to do the bass on one track, and the guitar on one track and the drums on one track and the synth. You're not going to do all these overdubs. We had to think about it, what was an essential part. So we'd work on the song till you could play it just in one pass. Everything essential. I think it really made the early stuff sound really strong because of that.
You really get a sense of that on their 1978 song "Mongoloid." But the 2023 documentary's director doesn't see his film as an ending bookmark for the band. "They're still touring. They're all still actively creatively pursuing many different things, as I hope that you would expect after seeing the film."

And speaking specifically about the documentary. Mark Mothersbaugh says Booji Boy "describes it as a halfway point to the year of 2073, where we'll celebrate the 100-year anniversary." Booji Boy also says the next 50 years will be more about action. "And it'll be about positive mutation. Mutate, don't stagnate."

In 2003, Hans Reiser answered questions from Slashdot's readers...

Today Wikipedia describes Hans Reiser as "a computer programmer, entrepreneur, and convicted murderer... Prior to his incarceration, Reiser created the ReiserFS computer file system, which may be used by the Linux kernel but which is now scheduled for removal in 2025, as well as its attempted successor, Reiser4."

This week alanw (Slashdot reader #1,822), spotted a development on the Linux kernel mailing list. "Hans Reiser (imprisoned for the murder of his wife) has written a letter, asking it to be published to Slashdot." Reiser writes: I was asked by a kind Fredrick Brennan for my comments that I might offer on the discussion of removing ReiserFS V3 from the kernel. I don't post directly because I am in prison for killing my wife Nina in 2006.

I am very sorry for my crime — a proper apology would be off topic for this forum, but available to any who ask.

A detailed apology for how I interacted with the Linux kernel community, and some history of V3 and V4, are included, along with descriptions of what the technical issues were. I have been attending prison workshops, and working hard on improving my social skills to aid my becoming less of a danger to society. The man I am now would do things very differently from how I did things then.
Click here for the rest of Reiser's introduction, along with a link to the full text of the letter...

The letter is dated November 26, 2023, and ends with an address where Reiser can be mailed. Ars Technica has a good summary of Reiser's lengthy letter from prison — along with an explanation for how it came to be. With the ReiserFS recently considered obsolete and slated for removal from the Linux kernel entirely, Fredrick R. Brennan, font designer and (now regretful) founder of 8chan, wrote to the filesystem's creator, Hans Reiser, asking if he wanted to reply to the discussion on the Linux Kernel Mailing List (LKML). Reiser, 59, serving a potential life sentence in a California prison for the 2006 murder of his estranged wife, Nina Reiser, wrote back with more than 6,500 words, which Brennan then forwarded to the LKML. It's not often you see somebody apologize for killing their wife, explain their coding decisions around balanced trees versus extensible hashing, and suggest that elementary schools offer the same kinds of emotional intelligence curriculum that they've worked through in prison, in a software mailing list. It's quite a document...

It covers, broadly, why Reiser believes his system failed to gain mindshare among Linux users, beyond the most obvious reason. This leads Reiser to detail the technical possibilities, his interpersonal and leadership failings and development, some lingering regrets about dealings with SUSE and Oracle and the Linux community at large, and other topics, including modern Russian geopolitics... Reiser asks that a number of people who worked on ReiserFS be included in "one last release" of the README, and to "delete anything in there I might have said about why they were not credited." He says prison has changed him in conflict resolution and with his "tendency to see people in extremes...."

Reiser writes that he understood the difficulty ahead in getting the Linux world to "shift paradigms" but lacked the understanding of how to "make friends and allies of people" who might initially have felt excluded. This is followed by a heady discussion of "balanced trees instead of extensible hashing," Oracle's history with implementing balanced trees, getting synchronicity just right, I/O schedulers, block size, seeks and rotational delays on magnetic hard drives, and tails. It leads up to a crucial decision in ReiserFS' development, the hard non-compatible shift from V3 to Reiser 4. Format changes, Reiser writes, are "unwanted by many for good reasons." But "I just had to fix all these flaws, fix them and make a filesystem that was done right. It's hard to explain why I had to do it, but I just couldn't rest as long as the design was wrong and I knew it was wrong," he writes. SUSE didn't want a format change, but Reiser, with hindsight, sees his pushback as "utterly inarticulate and unsociable." The push for Reiser 4 in the Linux kernel was similar, "only worse...."

He encourages people to "allow those who worked so hard to build a beautiful filesystem for the users to escape the effects of my reputation." Under a "Conclusion" sub-heading, Reiser is fairly succinct in summarizing a rather wide-ranging letter, minus the minutiae about filesystem architecture.

I wish I had learned the things I have been learning in prison about talking through problems, and believing I can talk through problems and doing it, before I had married or joined the LKML. I hope that day when they teach these things in Elementary School comes.

I thank Richard Stallman for his inspiration, software, and great sacrifices,

It has been an honor to be of even passing value to the users of Linux. I wish all of you well.


It both is and is not a response to Brennan's initial prompt, asking how he felt about ReiserFS being slated for exclusion from the Linux kernel. There is, at the moment, no reply to the thread started by Brennan.

It's "a free and open-source, software-defined storage platform," according to Wikipedia, providing object storage, block storage, and file storage "built on a common distributed cluster foundation". The charter advisory board for Ceph included people from Canonical, CERN, Cisco, Fujitsu, Intel, Red Hat, SanDisk, and SUSE.

And Nite_Hawk (Slashdot reader #1,304) is one of its core engineers — a former Red Hat principal software engineer named Mark Nelson. (He's now leading R&D for a small cloud systems company called Clyso that provides Ceph consulting.) And he's returned to Slashdot to share a blog post describing "a journey to 1 TiB/s". This gnarly tale-from-Production starts while assisting Clyso with "a fairly hip and cutting edge company that wanted to transition their HDD-backed Ceph cluster to a 10 petabyte NVMe deployment" using object-based storage devices [or OSDs]...) I can't believe they figured it out first. That was the thought going through my head back in mid-December after several weeks of 12-hour days debugging why this cluster was slow... Half-forgotten superstitions from the 90s about appeasing SCSI gods flitted through my consciousness...

Ultimately they decided to go with a Dell architecture we designed, which quoted at roughly 13% cheaper than the original configuration despite having several key advantages. The new configuration has less memory per OSD (still comfortably 12GiB each), but faster memory throughput. It also provides more aggregate CPU resources, significantly more aggregate network throughput, a simpler single-socket configuration, and utilizes the newest generation of AMD processors and DDR5 RAM. By employing smaller nodes, we halved the impact of a node failure on cluster recovery....

The initial single-OSD test looked fantastic for large reads and writes and showed nearly the same throughput we saw when running FIO tests directly against the drives. As soon as we ran the 8-OSD test, however, we observed a performance drop. Subsequent single-OSD tests continued to perform poorly until several hours later when they recovered. So long as a multi-OSD test was not introduced, performance remained high. Confusingly, we were unable to invoke the same behavior when running FIO tests directly against the drives. Just as confusing, we saw that during the 8 OSD test, a single OSD would use significantly more CPU than the others. A wallclock profile of the OSD under load showed significant time spent in io_submit, which is what we typically see when the kernel starts blocking because a drive's queue becomes full...

For over a week, we looked at everything from bios settings, NVMe multipath, low-level NVMe debugging, changing kernel/Ubuntu versions, and checking every single kernel, OS, and Ceph setting we could think of. None these things fully resolved the issue. We even performed blktrace and iowatcher analysis during "good" and "bad" single OSD tests, and could directly observe the slow IO completion behavior. At this point, we started getting the hardware vendors involved. Ultimately it turned out to be unnecessary. There was one minor, and two major fixes that got things back on track.
It's a long blog post, but here's where it ends up:

• Fix One: "Ceph is incredibly sensitive to latency introduced by CPU c-state transitions. A quick check of the bios on these nodes showed that they weren't running in maximum performance mode which disables c-states."

• Fix Two: [A very clever engineer working for the customer] "ran a perf profile during a bad run and made a very astute discovery: A huge amount of time is spent in the kernel contending on a spin lock while updating the IOMMU mappings. He disabled IOMMU in the kernel and immediately saw a huge increase in performance during the 8-node tests." In a comment below, Nelson adds that "We've never seen the IOMMU issue before with Ceph... I'm hoping we can work with the vendors to understand better what's going on and get it fixed without having to completely disable IOMMU."

• Fix Three: "We were not, in fact, building RocksDB with the correct compile flags... It turns out that Canonical fixed this for their own builds as did Gentoo after seeing the note I wrote in do_cmake.sh over 6 years ago... With the issue understood, we built custom 17.2.7 packages with a fix in place. Compaction time dropped by around 3X and 4K random write performance doubled."

The story has a happy ending, with performance testing eventually showing data being read at 635 GiB/s — and a colleague daring them to attempt 1 TiB/s. They built a new testing configuration targeting 63 nodes — achieving 950GiB/s — then tried some more performance optimizations...

The S&P 500 index tracks 500 of the largest companies listed on U.S. stock exchanges, according to Wikipedia.

And Friday that index "hit an all-time closing high," reports the Washington Post, "reflecting the staggering gains of a coterie of Big Tech firms against the backdrop of a surprisingly stable economy." The broad-based index closed at 4,839.81 — up more than 1 percent for the day — surpassing the previous closing record set in January of 2022. The stock market surged upward in the final quarter of 2023 as evidence gathered that the [U.S.] economy has not tipped into recession territory, despite the Federal Reserve's campaign to raise interest rates. At the same time analysts point to an AI-driven frenzy on Wall Street that rivals the dot-com boom of the late '90s, when investors sought to capitalize on the transformative gains brought by the early internet.

A booming S&P 500 is a welcome sign for the millions of Americans who invest in the index through retirement accounts. Investors in 2022 had about $5.7 trillion in assets passively indexed to the S&P 500 and another $5.7 trillion in funds that use it as a benchmark comparison, according to S&P Global. Voters' feelings about the stock market and economy could affect the 2024 election...

Tech companies, including a few names heavily associated with artificial intelligence work, led the S&P 500's gains. Seven of the largest tech stocks known as the "Magnificent Seven" — Apple, Microsoft, Alphabet, Amazon, Nvidia, Tesla and Meta — increased 75 percent on average in 2023 and represented 30 percent of the index's total market value at the end of 2023. "AI is the new dot-com," said Michael Farr of Farr, Miller and Washington. "It's the new magic that is going to change the world that we don't really understand yet. But we all understand it's very powerful." Those seven stocks made up around half of the S&P 500's growth last year. Nvidia, whose high-performance chips have become popular for AI uses, had the best year of the bunch, at one point gaining nearly $190 billion in value overnight, a 24 percent gain.
In the last 12 months, the index has risen 21.83%.

The article notes that "Although the rest of the market has lagged Big Tech, analysts say promising economic data from recent months has boosted optimism about the broader economy."

David Mills, the man who invented NTP and wrote the implementation, has passed away. He also created the Fuzzballs and EGP, and helped make global-scale internetworking possible. Vint Cerf, sharing the news on the Internet Society mail group: His daughter, Leigh, just sent me the news that Dave passed away peacefully on January 17, 2024. He was such an iconic element of the early Internet.

Network Time Protocol, the Fuzzball routers of the early NSFNET, INARG taskforce lead, COMSAT Labs and University of Delaware and so much more.

R.I.P.

An anonymous reader quotes a report from Ars Technica: On Thursday, UK's Government Communications Headquarters (GCHQ) announced the release of previously unseen images and documents related to Colossus, one of the first digital computers. The release marks the 80th anniversary of the code-breaking machines that significantly aided the Allied forces during World War II. While some in the public knew of the computers earlier (PDF), the UK did not formally acknowledge the project's existence until the 2000s.

Colossus was not one computer but a series of computers developed by British scientists between 1943 and 1945. These 2-meter-tall electronic beasts played an instrumental role in breaking the Lorenz cipher, a code used for communications between high-ranking German officials in occupied Europe. The computers were said to have allowed allies to "read Hitler's mind," according to The Sydney Morning Herald. The technology behind Colossus was highly innovative for its time. Tommy Flowers, the engineer behind its construction, used over 2,500 vacuum tubes to create logic gates, a precursor to the semiconductor-based electronic circuits found in modern computers. While 1945's ENIAC was long considered the clear front-runner in digital computing, the revelation of Colossus' earlier existence repositioned it in computing history. (However, it's important to note that ENIAC was a general-purpose computer, and Colossus was not.)

GCHQ's public sharing of archival documents includes several photos of the computer at different periods and a letter discussing Tommy Flowers' groundbreaking work that references the interception of "rather alarming German instructions." Following the war, the UK government issued orders for the destruction of most Colossus machines, and Flowers was required to turn over all related documentation. The GCHQ claims that the Colossus tech "was so effective, its functionality was still in use by us until the early 1960s." In the GCHQ press release, Director Anne Keast-Butler paid tribute to Colossus' place in the UK's lineage of technological innovation: "The creativity, ingenuity and dedication shown by Tommy Flowers and his team to keep the country safe were as crucial to GCHQ then as today."

Since launching in 2007, Harmonix's Rock Band has released over 2,800 DLC songs to keep its rhythm game fresh. Now, Harmonix has announced the last of the series' releases will arrive on January 25, "marking the end of a nearly 16-year era in music gaming history," reports Ars Technica. From the report: Previously purchased DLC songs will still be playable in Rock Band 4, Harmonix's Daniel Sussman writes in an announcement post. Rock Band 4 live services, including online play, will also continue as normal, after online game modes for earlier Rock Band games were finally shut down in late 2022. "Taking a longer look back, I see the Rock Band DLC catalog as a huge achievement in persistence and commitment," Sussman writes. "Over the years we've cleared, authored and released nearly 3,000 songs as DLC and well over 3,000 if you include all the game soundtracks. That's wild." [...]

While official support for Rock Band DLC is finally ending, the community behind Clone Hero just recently hit an official Version 1.0 release for their PC-based rhythm game that's compatible with many guitars, drums, keyboards, gamepads, and adapters used in Rock Band and other console rhythm games (microphones excluded). While that game doesn't come with anything like Rock Band's list of officially licensed song content, it's not hard to find a bevy of downloadable, fan-made custom Clone Hero tracks with a little bit of searching.

Since shortly after its acquisition by Epic in 2021, Harmonix has been working on "Fortnite Festival," the incredibly Rock Band-esque mini-game embedded in Epic's Fortnite "metaverse." Sussman writes that a "rotating selection" of free-to-play songs will continue to cycle through that game mode, and that support for Rock Band 4 instruments will be coming to Fortnite in the future as well (peripheral-maker PDP looks like it will be getting in on the Fortnite guitar act as well). As for the last few weeks of Rock Band DLC offerings, Sussman writes that Harmonix is planning "some tear jerkers that sum up our feelings about this moment."

ScienceAlert reminds us that plants exude "a fine mist of airborne compounds that they use to communicate and protect themselves." And while they've been detected in over 80 plant species, now researchers have applied real-time imaging techniques "to reveal how plants receive and respond to these aerial alarms." Yuri Aratani and Takuya Uemura, molecular biologists at Saitama University in Japan, and colleagues rigged up a pump to transfer compounds emitted by injured and insect-riddled plants onto their undamaged neighbors, and a fluorescence microscope to watch what happened. Caterpillars (Spodoptera litura) were set upon leaves cut from tomato plants and Arabidopsis thaliana, a common weed in the mustard family, and the researchers imaged the responses of a second, intact, insect-free Arabidopsis plant to those danger cues.

These plants weren't any ordinary weeds: they had been genetically altered so their cells contained a biosensor that fluoresced green when an influx of calcium ions was detected... [T]he team visualized how plants responded to being bathed in volatile compounds, which plants release within seconds of wounding. It wasn't a natural set-up; the compounds were concentrated in a plastic bottle and pumped onto the recipient plant at a constant rate, but this allowed the researchers to analyze what compounds were in the pungent mix...

[T]he undamaged plants received the messages of their injured neighbors loud and clear, responding with bursts of calcium signaling that rippled across their outstretched leaves... [G]uard cells generated calcium signals within a minute or so, after which mesophyll cells picked up the message... "We have finally unveiled the intricate story of when, where, and how plants respond to airborne 'warning messages' from their threatened neighbors," says Masatsugu Toyota, a molecular biologist at Saitama University in Japan and senior author of the study.

Last April the Python Software Foundation warned that Europe's proposed Cyber Resilience Act jeopardized their organization and "the health of the open-source software community" with overly broad policies that "will unintentionally harm the users they are intended to protect."

They'd worried that the Python Software Foundation could incur financial liabilities just for hosting Python and its PyPI package repository due to the proposed law's attempts to penalize cybersecurity lapses all the way upstream. But a new blog post this week cites some improvements: We asked for increased clarity, specifically:

"Language that specifically exempts public software repositories that are offered as a public good for the purpose of facilitating collaboration would make things much clearer. We'd also like to see our community, especially the hobbyists, individuals and other under-resourced entities who host packages on free public repositories like PyPI be exempt."


The good news is that CRA text changed a lot between the time the open source community — including the PSF — started expressing our concerns and the Act's final text which was cemented on December 1st. That text introduces the idea of an "open source steward."

"'open-source software steward' means any legal person, other than a manufacturer, which has the purpose or objective to systematically provide support on a sustained basis for the development of specific products with digital elements qualifying as free and open-source software that are intended for commercial activities, and ensures the viability of those products;" (p. 76)


[...] So are we totally done paying attention to European legislation? Ah, while it would be nice for the Python community to be able to cross a few things off our to-do list, that's not quite how it works. Firstly, the concept of an "open source steward" is a brand new idea in European law. So, we will be monitoring the conversation as this new concept is implemented or interacts with other bits of European law to make sure that the understanding continues to reflect the intent and the realities of open source development. Secondly, there are some other pieces of legislation in the works that may also impact the Python ecosystem so we will be watching the Product Liability Directive and keeping up with the discussion around standard-essential patents to make sure that the effects on Python and open source development are intentional (and hopefully benevolent, or at least benign.)

With subsidiaries like WebMD and CarsDirect, the digital media company "Internet Brands" has over 5,000 employees — and 20 offices in expensive locations like Seattle, San Francisco, Chicago, and New York City.

Their solution? Create a cheery corporate video on the company's Vimeo account announcing a new (non-negotiable) hybrid return-to-office policy.

SFGate.com calls it "the return-to-office fight's most bizarre corporate messaging yet." Executives from Internet Brands' internet brands are so wide-eyed and declarative, they appear to be at their breaking point in wanting more workers at the office. "Too big of a group hasn't returned," CEO Bob Brisco complains, near the video's opening. The vehicle to deliver that message has it all: rapid jump cuts, odd sound mixing and executives clearly reading their lines from teleprompters. There's plainly faked office b-roll and the obvious use of green screens. There's even some enthusiastic (and awkward) sashaying to the New Orleans classic "Iko Iko" — one wonders if participating employees received compensation.
Interestingly, "Iko Iko" is a song about a collision between two rival tribes, which opens with a threat to "set your flag on fire." But subtitles on the video translate the song's Creole patois word "Jockamo" into the corporate-positive phrase "we mean business." It's like the executives started their brainstorming session by watching 12 music videos, an iMovie editing tutorial and the entirety of "The Office" Season 1. Mixed in with the corporate b-roll of a copy machine spitting out paper and a too-loud video of a hand crushing a Dr. Pepper can, the company's executives sketch out the vibe of a return-to-office plan — though no specifics.
The video ends with CEO Bob Brisco thanking the team, before gently adding "I want to leave you with this. We aren't asking or negotiating at this point. We're informing, of how we need to work together going forward....

"Thank you, in advance, for your help."

The video has since started going viral on Reddit's "Work Reform" subreddit, with a headline calling it a "bizarre and cringe video mocking working from home and threatening employees who continue to avoid the office." (This take drew 1,300 upvotes, and 241 comments, like " 'By the way this is a threat' is a nice way to end it.")

Footage of at least some of the executives was clearly just spliced in front of still photos showing what offices look like. But besides the wooden delivery, what really struck me is how generic all the words were:

• "Working together face-to-face helps us create ideas, faster, and better."

• "We're able to collaborate, and help each other to be better leaders."

• "We're better when we're together, and we need to be our best — to crush our competition." [Footage of the word "competition" being erased from a whiteboard. And then, of someone crushing a Dr. Pepper can...]

"What is lost when billionaires with no background nor interest in a civic mission, who are only concerned with profiteering, take over our most influential news organizations? What new models of news gathering, and dissemination show promise for our increasingly digital age? What can the public do to preserve and support vibrant journalism?"

That's a synopsis posted about the documentary Stripped for Parts: American Journalism on the Brink, cited by the long-standing news industry magazine Editor and Publisher (which dates back to 1901). This week its podcast interviewed filmmaker Rick Goldsmith about his 90-minute documentary, which they say "tells the tale" of how hedge fund Alden Global Capital clandestinely entered into the news publishing industry in a big way — and then "dismantled local newspapers 'piece by piece,' creating a crises within the communities they serve, leaving 'news deserts' and 'ghost papers' in their wake." [Goldsmith] spent more than 5-years creating his latest work... a film that tells the tale of how newspapers business model is faltering, not just because of the loss of advertising and digital disruption; but also to capitalist greed, as hedge funds and corporate America buy them, sell their assets and leave the communities they serve without their local "voice" and a final check on power.
On the podcast, Goldsmith notes that in many cases a paper's assets "were the newspaper buildings and the printing presses... These were worth in many cases more than the newspapers themselves." After laying off staff, the hedge fund could also downsize out of those buildings.

By 2021 Alden owned 100 newspapers and 200 more publications — and then acquired Tribune Publishing to become America's second-largest newspaper publisher.

The hedge fund currently owns several newspapers in the San Francisco Bay Area, according to SFGate: At first, Goldsmith's documentary might seem like it's delivering more bad news. But it avoids despair, offering hope on the horizon for news deserts where aggressive reporting is needed. It introduces the notion that the traditional capitalist business model is failing the news industry, and that nonprofit organizations must be providers of local coverage.

necro81 writes: ULA's Vulcan rocket, many years in development, had a successful first launch this morning from Cape Canaveral. The expendable rocket, which uses two methane-fueled BE-4 engines from Blue Origin in its first stage, is the successor to the Delta and Atlas-V launch vehicles.

Years overdue, and with a packed manifest for future launches, Vulcan is critical to the ULA's continued existence. The payload on this first mission is called Peregrine -- a lunar lander from Astrobotic. Unfortunately, Peregrine has suffered an anomaly some hours into flight; it is unclear whether the mission can recover. UPDATE: According to Reuters, Peregrine's propulsion system experienced issues hours after separating from Vulcan, "preventing the spacecraft from angling itself toward the sun for power."

"While mission engineers regained control, the faulty propulsion system is losing valuable propellant, forcing Astrobotic to consider 'alternative mission profiles,' suggesting a moon landing is no longer achievable," reports Reuters.

In the most recent update (#5) on X, Astrobotic said in a statement: "We've received the first image from Peregrine in space! The camera utilized is mounted atop a payload deck and shows Multi-Layer Insulation (MLI) in the foreground. The disturbance of the MLI is the first visual clue that aligns with out telemetry data that points to a propulsion system anomaly. Nonetheless, the spacecraft's battery is now fully charged, and we are using Peregrine's existing power to perform as many payload and spacecraft operations as possible. At this time, the majority of our Peregrine mission team has been awake and working diligently for more than 24 hours. We ask for your patience as we reassess incoming data so we can provide ongoing updates later this evening."

23 years ago, Slashdot interviewed Chris Montgomery about his team's new Ogg Vorbis audio format.

But Slashdot reader joshuark admits when he first heard the name, it reminded him of the mushroom underworld in The Secret World of Og. I've downloaded videos from the Internet Archive, and one format is the OGG or Ogg Vorbis player format. I just was wondering with other formats, is Ogg still used anymore after approximately 20-years?

I'm not commenting on good/bad/whatever about the format, just is it still in use, relevant anymore?
The nonprofit Xiph.Org Foundation (which develops Orbis Vogg) started work in 2007 on the high-quality/low-delay format Opus, which their FAQ argues "theoretically" makes other lossy codecs obsolete. "From technical point of view (loss, delay, bitrates...) it can replace both Vorbis and Speex, and the common proprietary codecs too."

But elsewhere Xiph.org points out that "The bitstream format for Vorbis I was frozen Monday, May 8th 2000. All bitstreams encoded since will remain compatible with all future releases of Vorbis." So how is that playing out in 2024? Share your own thoughts in the comments.

Does anyone still use Ogg Vorbis format?

Long-time Slashdot readers necro81 writes: The popular vision of Neptune is azure blue. This comes mostly from the publicly released images from Voyager 2's flyby in 1989 — humanity's only visit to this icy giant at the edge of the solar system. But it turns out that view is a bit distorted — the result of color-enhancing choices made by NASA at the time. A new report from Oxford depicts Neptune's blue color as more muted, with a touch of green, not much different than Uranus. The truer-to-life view comes from re-analyzing the Voyager data, combined with ground-based observations going back decades. (Add'l links here, here, and here.)

This is nothing new: most publicity images released by space agencies — of planets, nebulae, or the surface of Mars — have undergone some color-enhancement for visual effect. (They'll also release "true-color" images, which try to best mimic what the human eye would see.) Many images — such as those from the infrared-seeing JWST — need wholesale coloration of their otherwise invisible wavelengths. The new report is a good reminder, though, to remember that scientific cameras are pretty much always black and white; color images come from combining filters in various ways.
Also thanks to long-time Slashdot reader Geoffrey.landis for sharing the story.

25 years ago, Slashdot's CmdrTaco posted an announcement from Slashdot reader #257. "Jabber is a new project I recently started to create a complete open-source platform for Instant Messaging with transparent communication to other Instant Messaging systems (ICQ, AIM, etc).

"Most of the initial design and protocol work is done, as well as a working server and a few test clients."

You can find the rest of the story on Wikipedia. "Its major outcome proved to be the development of the XMPP protocol." ("Based on XML, it enables the near-real-time exchange of structured data between two or more network entities.") Originally developed by the open-source community, the protocols were formalized as an approved instant messaging standard in 2004 and have been continuously developed with new extensions and features... In addition to these core protocols standardized at the IETF, the XMPP Standards Foundation (formerly the Jabber Software Foundation) is active in developing open XMPP extensions...

XMPP features such as federation across domains, publish/subscribe, authentication and its security even for mobile endpoints are being used to implement the Internet of Things.
"Designed to be extensible, the protocol offers a multitude of applications beyond traditional IM in the broader realm of message-oriented middleware, including signalling for VoIP, video, file transfer, gaming and other uses..."

Slashdot reader #257 turned out to be Jeremie Miller (who at the time was just 23 years old). And according to his own page on Wikipedia, "Currently, Miller sits on the board of directors for Bluesky Social, a social media platform."