An anonymous reader quotes a report from Business Insider: Millions of dollars were missing when the CEO of a crypto exchange died without sharing the passwords to his accounts. Investigators recently cracked his laptop -- only to find the money was gone. Gerald Cotten, the founder of QuadrigaCX, was thought to have had sole access to the funds and coins exchanged on it. After his death in December, his colleagues said that about $137 million in cryptocurrency belonging to about 115,000 customers was held offline in "cold storage" and inaccessible. The case has sparked numerous theories, including that Cotten faked his own death and ran off with the cash. A court-appointed auditor, Ernst & Young, was able to crack Cotten's laptop and found that the accounts were emptied in April, eight months before his death, it said in a report last week.

The investigators said they found other issues too, such as that Quadriga kept "limited books and records" and never reported its financials. Ernst & Young also said it found 14 user accounts linked to Cotten that traded on Quadriga's exchange and withdrew cryptocurrency to addresses not tied to Quadriga. Burdened with $190 million in debt and unable to find or access the money, Quadriga filed for creditor protection in late January. A Nova Scotia court threw the company a lifeline this week, granting it a 45-day extension that prevents creditors from filing lawsuits against it until mid-April.

"Deep, non-REM sleep helps people's brains to wash away toxic proteins and waste, a new study found, reinforcing the link between sleep deprivation, aging and Alzheimer's disease," reports U.S. News & World Report.

Or, as Discover magazine puts it, "Getting enough deep sleep might be the key to preventing dementia." The discovery reinforces how critical quality sleep is for brain health and suggests sleep therapies might curb the advance of memory-robbing ailments, like Alzheimer's disease... Cerebrospinal fluid (CSF) churns through a system of brain tunnels piped in the spaces between brain cells and blood vessels. Scientists call it the glymphatic system. This system circulates nutrients like glucose, the brain's primary energy source, and washes away potentially toxic waste. And it may be the reason why animals even need sleep. The system takes out the brain's trash when we're asleep, and it shuts down when we're awake.

Maiken Nedergaard, a neurologist at the University of Rochester Medical Center in New York, who led the new research, and her team were curious if the system works best and clears more waste -- like Alzheimer's causing beta amyloid plaque -- when animals are in deep sleep. To find out, the researchers used six different anesthetics to put mice into deep sleep. Then they tracked cerebrospinal fluid as it flowed into the brain. As the mice slept, the researchers watched the rodents' brain activity on an electroencephalograph, or EEG, and recorded the animals' blood pressures and heart and respiratory rates. Mice anesthetized with a combination of two drugs, ketamine and xylazine, showed the strongest deep sleep brain waves and these brain waves predicted CSF flow into the brain, the researchers found.
The lead researcher now argues that focusing on sleep in the early stages of dementia "might be able to slow progression of the disease."

The Economist tells the story of how French chemist Antoine-Laurent de Lavoisier came to publish the first putatively comprehensive list of chemical elements -- substances incapable of being broken down by chemical reactions into other substances -- known today as the periodic table. It was Lavoisier and his wife Marie-Anne who pioneered the technique of measuring quantitatively what went into and came out of a chemical reaction, as a way of getting to the heart of what such a reaction really is. "Where the story of the periodic table of the elements really starts is debatable," reports The Economist, "but Lavoisier's laboratory is as good a place as any to begin..." Here's an excerpt from the report: Lavoisier's list of elements, published in 1789, five years before his execution, had 33 entries. Of those, 23 -- a fifth of the total now recognized -- have stood the test of time. Some, like gold, iron and sulphur, had been known since ancient days. Others, like manganese, molybdenum and tungsten, were recent discoveries. What the list did not have was a structure. It was, avant la lettre, a stamp collection. But the album was missing.

Creating that album, filling it and understanding why it is the way it is took a century and a half. It is now, though, a familiar feature of every high-school science laboratory. Its rows and columns of rectangles, each containing a one- or two-letter abbreviation of the name of an element, together with its sequential atomic number, represent an order and underlying structure to the universe that would have astonished Lavoisier. It is little exaggeration to say that almost everything in modern science is connected, usually at only one or two removes, to the periodic table.

"It's an unnerving sensation, being alone with your thoughts in the year 2019," writes New York Times technology columnist Kevin Roose, in an article shared by DogDude. "I don't love referring to what we have as an 'addiction.' That seems too sterile and clinical to describe what's happening to our brains in the smartphone era." We might someday evolve the correct biological hardware to live in harmony with portable supercomputers that satisfy our every need and connect us to infinite amounts of stimulation. But for most of us, it hasn't happened yet... [S]ometime last year, I crossed the invisible line into problem territory. My symptoms were all the typical ones: I found myself incapable of reading books, watching full-length movies or having long uninterrupted conversations. Social media made me angry and anxious, and even the digital spaces I once found soothing (group texts, podcasts, YouTube k-holes) weren't helping...

Mostly, I became aware of how profoundly uncomfortable I am with stillness. For years, I've used my phone every time I've had a spare moment in an elevator or a boring meeting. I listen to podcasts and write emails on the subway. I watch YouTube videos while folding laundry. I even use an app to pretend to meditate. If I was going to repair my brain, I needed to practice doing nothing.
Another science journalist helped him through "phone rehab," and "now, the physical world excites me, too -- the one that has room for boredom, idle hands and space for thinking." After a final 48 hour digital detox, "I also felt twinges of anger -- at myself, for missing out on this feeling of restorative boredom for so many years; at the engineers in Silicon Valley who spend their days profitably exploiting our cognitive weaknesses; at the entire phone-industrial complex that has convinced us that a six-inch glass-and-steel rectangle is the ideal conduit for worldly experiences...

"Steve Jobs wasn't exaggerating when he described the iPhone as a kind of magical object, and it's truly wild that in the span of a few years, we've managed to turn these amazing talismanic tools into stress-inducing albatrosses. It's as if scientists had invented a pill that gave us the ability to fly, only to find out that it also gave us dementia."

dryriver writes: A lot of people probably remember the 1990s palmtop computers made by Psion fondly. The clamshell-design palmtops were pocketable, black and white, but had a working stylus and a fantastic tactile foldout QWERTY keyboard that you could type pretty substantial documents on or even write code with. A different company -- Planet Computers -- has now produced a spiritual successor to the old Psion palmtops called the Gemini PDA that is much like an old Psion but with the latest Android smartphone hardware in it and a virtually identical tactile keyboard. It can also dual boot to Linux (Debian, Ubuntu, Sailfish) alongside Android. The technical specs are a MediaTek deca-core processor, 4GB RAM, 64GB storage (plus microSD slot), 4G, 802.11c Wi-Fi, GPS, Bluetooth, eSIM support, and 4,220mAh battery. The screen measures in at 5.99-inches with a 2,160 x 1,080 (403ppi) resolution. The only thing missing seems to be the stylus -- but perhaps that would have complicated manufacturing of this niche-device in its first production run.

Remember when America's National Highway Traffic Safety Administration reported Tesla's Autopilot reduced crashes by 40%? Two years later the small research and consulting firm Quality Control Systems (QCS) finally obtained the underlying data -- and found flaws in the methodology "serious enough to completely discredit the 40 percent figure," reports Ars Technica, "which Tesla has cited multiple times over the last two years."
The majority of the vehicles in the Tesla data set suffered from missing data or other problems that made it impossible to say whether the activation of Autosteer increased or decreased the crash rate. But when QCS focused on 5,714 vehicles whose data didn't suffer from these problems, it found that the activation of Autosteer actually increased crash rates by 59 percent...

NHTSA undertook its study of Autopilot safety in the wake of the fatal crash of Tesla owner Josh Brown in 2016. Autopilot -- more specifically Tesla's lane-keeping function called Autosteer -- was active at the time of the crash, and Brown ignored multiple warnings to put his hands back on the wheel. Critics questioned whether Autopilot actually made Tesla owners less safe by encouraging them to pay less attention to the road. NHTSA's 2017 finding that Autosteer reduced crash rates by 40 percent seemed to put that concern to rest. When another Tesla customer, Walter Huang, died in an Autosteer-related crash last March, Tesla cited NHTSA's 40 percent figure in a blog post defending the technology. A few weeks later, Tesla CEO Elon Musk berated reporters for focusing on stories about crashes instead of touting the safety benefits of Autopilot....

[T]hese new findings are relevant to a larger debate about how the federal government oversees driver-assistance systems like Autopilot. By publishing that 40 percent figure, NHTSA conferred unwarranted legitimacy on Tesla's Autopilot technology. NHTSA then fought to prevent the public release of data that could help the public independently evaluate these findings, allowing Tesla to continue citing the figure for another year.... NHTSA fought QCS' FOIA request after Tesla indicated that the data was confidential and would cause Tesla competitive harm if it was released.
Last May the NHTSA finally clarified that their study "did not assess the effectiveness of this technology." Ars Technica also points out that the data focused on version 1 of Autopilot, "which Tesla hasn't sold since 2016."

David Aguila, a 19-year-old bioengineering student at the Universitat Internacional de Catulunya in Spain, has built himself a robotic prosthetic arm using Lego pieces. David was born with Poland syndrome that affects his right peck and right arm. From a report: Once his favorite toys, the plastic bricks became the building material for Mr Aguilar's first, still very rudimentary, artificial arm at the age of nine, and each new version had more movement than the one before. He uses the artificial arm only occasionally and is self-sufficient without it, with all the versions on display in his room in the university residence on the outskirts of Barcelona. In November 2017 Mr Aguilar, who uses Lego pieces provided by a friend, proudly displayed a fully functional red and yellow robotic arm, built when he was 18, bending it in the elbow joint and flexing the grabber.

The latest models are marked MK followed by the number -- a tribute to comic book superhero Iron Man and his MK armor suits. The MK II was a predominantly blue model built from a Lego plane set, including a motor, while MK III was created from a set for a piece of mining equipment. After graduating from university, he wants to create affordable prosthetic solutions for people who need them.

Long-time Slashdot reader v3rgEz quotes MuckRock: Government investigations into California's electricity shortage, ultimately determined to be caused by intentional market manipulations and capped retail electricity prices by the now infamous Enron Corporation, resulted in terabytes of information being collected by the Federal Energy Regulatory Commission. This included several extremely large databases, some of which had nearly 200 million rows of data, including Enron's bidding and price processes, their trading and risk management systems, emails, audio recordings, and nearly 100,000 additional documents. That information has quietly disappeared, and not even its custodians seem to know why.
The web page where a defense contractor hosts the data has been down since 2013, and after a one-month wait they replied to a request by stating the data was "under review" and "currently not accessible," adding that it might never be available again. And while a U.S. government site also claims they offer a trio of datasets on CD, that agency "has not responded to repeated requests for these datasets sent over the past two months."

The site also instructs visitors to email Lockheed Martin, who maintains some of the data -- but the provided email address bounces.

Tourism operators in Australia claim inaccuracies in Google Maps are deterring potential visitors, by making remote attractions appear further away than they actually are. From a report: The Queensland government in north-east Australia has complained to Google, which says it will look into the issue. Firms looking to promote their small towns as remote tourist destinations say Google Maps inflates travel times. Outback businesses say errors in the map app can add hours to a journey. "People aren't coming to places because they think it takes too long, or they're missing opportunities to refuel and they're getting sent off on another road that has no fuel [outlets]," Robyn Mackenzie, of the Eromanga Natural History Museum, told national broadcaster ABC. "People will get frightened of travelling in the outback, because they don't have any confidence in the mapping," the general manager of the small town museum added.

pgmrdlm quotes a report from CBS News: For the first time, a new network of satellites will soon be able to track all commercial airplanes in real time, anywhere on the planet. Currently, planes are largely tracked by radar on the ground, which doesn't work over much of the world's oceans. The final 10 satellites were launched Friday to wrap up the $3 billion effort to replace 66 aging communication satellites, reports CBS News' Kris Van Cleave, who got an early look at the new technology.

On any given day, 43,000 planes are in the sky in America alone. When these planes take off, they are tracked by radar and are equipped with a GPS transponder. All commercial flights operating in the U.S. and Europe have to have them by 2020. It's that transponder that talks to these new satellites, making it possible to know exactly where more than 10,000 flights currently flying are.

Kashmir Hill, reporting at Gizmodo: The visitors started coming in 2013. The first one who came and refused to leave until he was let inside was a private investigator named Roderick. He was looking for an abducted girl, and he was convinced she was in the house. John S. and his mother Ann live in the house, which is in Pretoria, the administrative capital of South Africa and next to Johannesburg. They had not abducted anyone, so they called the police and asked for an officer to come over. Roderick and the officer went through the home room by room, looking into cupboards and under beds for the missing girl. Roderick claimed to have used a "professional" tracking device "that could not be wrong," but the girl wasn't there. This was not an unusual occurrence. John, 39, and Ann, 73, were accustomed to strangers turning up at their door accusing them of crimes; the visitors would usually pull up maps on their smartphones that pointed at John and Ann's backyard as a hotbed of criminal activity.

[...] The outline of this story might sound familiar to you if you've heard about this home in Atlanta, or read about this farm in Kansas, and it is, in fact, similar: John and Ann, too, are victims of bad digital mapping. There is a crucial difference though: This time it happened on a global scale, and the U.S. government played a key role. [...] Technologist Dhruv Mehrotra crawled MaxMind's free database for me and plotted the locations that showed up most frequently. Unfortunately, John and Ann's house must have just missed MaxMind's cut-off for remediation. Theirs was the 104th most popular location in the database, with over a million IP addresses mapped to it.

The editors of Ars Technica have announced their annual "Deathwatch" list, identifying "companies, tech, and trends least likely to succeed in 2019." An anonymous reader quotes their report: The past year has been an absolute freefall for Essential.... The market was ultimately not impressed with the Essential phone, and the fire sales started almost immediately. Only two months after launch, the phone got a permanent $200 price drop, to $499. November saw deals as low as $399. Eventually, the $700 phone was discounted all the way down to $224, thanks to a mix of poor sales and a lack of consumer confidence in the company. A poorly selling phone was one thing, but things really started to look bad for Essential in May, when it was announced the company had cancelled the second generation Essential Phone. The first device took such a toll on the company that it was considering selling itself, and suddenly the future of Essential was in doubt.

While the phone was dead, in May the company said it was focusing on an upcoming smart home product and operating system. But by October, it announced that it was cutting 30 percent of its staff, and the company was pivoting away from smart home products and would try building a phone again. It will re-sell you a missing headphone jack, though. Essential's next phone -- if the company lasts that long -- is supposedly "an AI Phone That Texts People for You" according to Bloomberg. That sounds awful. On top of all that, Essential's CEO and founder Rubin has been the subject of a major sexual misconduct controversy at Google.
They also write that 2019 "is going to probably determine whether Facebook's management team will continue as it is -- or whether there's a stockholder rebellion, or a government lawsuit, or some combination of both that drives CEO Mark Zuckerberg and others out."

Also on their "Deathwatch" list are Snap, and Verizon's "AOL/Yahoo Frankenstein" -- but not Gwyneth Paltrow's Goop. "As much as we'd love to plop Goop on the 2019 Deathwatch, it is still just on our Deathwatch wish list. Goop is, in fact, thriving."

Rather than serving up platitudes about innovation, the man charged with saving former unicorn Evernote says his priority this year is addressing the long list of user complaints. From a report: Despite some progress, Evernote continued to struggle last year, cutting 15 percent of its staff and losing many top executives.So what doesn't work? Lots of stuff, much of it very basic, new CEO Ian Small says: "Frankly, it's a bit disingenuous for me to try to get our most dedicated users all fired up about inventing the future of Evernote when exactly those same people are the ones who know best that sync doesn't always work right. Or that Evernote on Windows is a bit tired, and is missing features that are found on the Mac version. Or that each version of Evernote seems to work slightly differently, and exhibits its own unique collection of bugs and undesirable behaviors. Or that Evernote on mobile devices sometimes feels like a pared-down version of a powerful desktop app, instead of a mobile-first view into a powerful cloud-enabled productivity environment." Small says these problems have lingered for years and were well-known, but he didn't want to get into why they weren't fixed sooner. Instead, he promises the main focus of 2019 will be dealing with these and numerous other issues.

A fifth of Earth's geologic history might have vanished because planet-wide glaciers buried the evidence. From a report: The Grand Canyon is a gigantic geological library, with rocky layers that tell much of the story of Earth's history. Curiously though, a sizeable layer representing anywhere from 250 million years to 1.2 billion years is missing. Known as the Great Unconformity, this massive temporal gap can be found not just in this famous crevasse, but in places all over the world. In one layer, you have the Cambrian period, which started roughly 540 million years ago and left behind sedimentary rocks packed with the fossils of complex, multicellular life. Directly below, you have fossil-free crystalline basement rock, which formed about a billion or more years ago.

So where did all the rock that belongs in between these time periods go? Using multiple lines of evidence, an international team of geoscientists reckons that the thief was Snowball Earth, a hypothesized time when much, if not all, of the planet was covered in ice. According to the team, at intervals within those billion or so years, up to a third of Earth's crust was sawn off by Snowball Earth's roaming glaciers and their erosive capabilities. The resulting sediment was dumped into the slush-covered oceans, where it was then sucked into the mantle by subducting tectonic plates.

Effectively, in many locations, Earth buried the evidence of about a fifth of its geological history, the team argued this week in the Proceedings of the National Academy of Sciences. The notion is elegant but provocative, and the authors themselves predict that some geoscientists will express skepticism. "I think, though, we have extraordinary evidence to support that extraordinary claim," says study leader C. Brenhin Keller, a postdoctoral fellow at the Berkeley Geochronology Center.

"What's the worst that can happen?" thought Nicko Feinberg last December when he listed his house on Airbnb. The listing explicitly said no parties. Then a request came through to book the house for one night on New Year's Day. It was from a young man, probably in his early 20s. He had one review but it was terrific.... I picked up my boys and we stayed down the road at my mother's apartment... When I got back [the next day] I saw three or four cars in the driveway. I threw my food down and knew I was screwed. Inside there were about 12 young adults, all trying to clean.

The floors looked like someone had poured Jagermeister and champagne everywhere and then danced on them. Everything seemed wrong: my artwork was not on the walls; there was furniture missing; the glass panel on my staircase was shattered; even the floor didn't seem level any more. Then I noticed they were using my best sheets and towels as mops....I told them no one was leaving and I called the police and Airbnb. When a police officer turned up, he said it was a civil matter, before adding: "We were here last night...."

Ultimately, it was just stuff and I knew it would be OK. But I felt a massive disappointment in humanity. That night, it wasn't hard for me and my boys to find Instagram pictures and videos of the party. It was horrifying to see so many people in the house, jumping up and down on the furniture and windowsills. They broke my hot tub and tiles in the bathroom; when I looked in the rubbish bags, I saw all my drinks bottles empty, as well as broken glasses and towels. I found an image online of the invite that said, "Mansion Party" with my address. There had been 300 people there. Boys were charged to enter; girls got in free.
While he won't disclose what Airbnb paid him for the damage, "a year later repairs are continuing. The floor is still uneven." But he told one local news channel that the damage was over $100,000, adding "There's footprints on my bathroom walls."

At one point more than 100 cars had been parked outside, according to a police report, and the 23-year-old was ultimately charged with "disorderly conduct". He also was banned permanently from Airbnb -- which said in a statement that "negative incidents are incredibly rare."

"At midnight on New Year's Eve, all works first published in the United States in 1923 will enter the public domain," reports Smithsonian Magazine. "It has been 21 years since the last mass expiration of copyright in the U.S.

"After January 1, any record label can issue a dubstep version of the 1923 hit 'Yes! We Have No Bananas,' any middle school can produce Theodore Pratt's stage adaptation of The Picture of Dorian Gray, and any historian can publish Winston Churchill's The World Crisis with her own extensive annotations." From the report: "The public domain has been frozen in time for 20 years, and we're reaching the 20-year thaw," says Jennifer Jenkins, director of Duke Law School's Center for the Study of the Public Domain. The release is unprecedented, and its impact on culture and creativity could be huge. We have never seen such a mass entry into the public domain in the digital age. The last one -- in 1998, when 1922 slipped its copyright bond -- predated Google. "We have shortchanged a generation," said Brewster Kahle, founder of the Internet Archive. "The 20th century is largely missing from the internet."

We can blame Mickey Mouse for the long wait. In 1998, Disney was one of the loudest in a choir of corporate voices advocating for longer copyright protections. At the time, all works published before January 1, 1978, were entitled to copyright protection for 75 years; all author's works published on or after that date were under copyright for the lifetime of the creator, plus 50 years. Steamboat Willie, featuring Mickey Mouse's first appearance on screen, in 1928, was set to enter the public domain in 2004. At the urging of Disney and others, Congress passed the Sonny Bono Copyright Term Extension Act, named for the late singer, songwriter and California representative, adding 20 years to the copyright term. Mickey would be protected until 2024 -- and no copyrighted work would enter the public domain again until 2019, creating a bizarre 20-year hiatus between the release of works from 1922 and those from 1923.

"Nearly 200 countries overcame political divisions late on Saturday to agree on rules for implementing a landmark global climate deal," reports Reuters. "After two weeks of talks in the Polish city of Katowice, nations finally reached consensus on a more detailed framework for the 2015 Paris Agreement, which aims to limit a rise in average world temperatures to 'well below' 2 degrees Celsius (3.6 degrees Fahrenheit) above pre-industrial levels." From the report: Before the talks started, many expected the deal would not be as robust as needed. The unity which underpinned the Paris talks has fragmented, and U.S. President Donald Trump intends to pull his country - one of the world's biggest emitters - out of the pact. At the 11th hour, ministers managed to break a deadlock between Brazil and other countries over the accounting rules for the monitoring of carbon credits, deferring the bulk of that discussion to next year, but missing an opportunity to send a signal to businesses to speed up their actions. Still, exhausted ministers managed to bridge a series of divides to produce a 156-page rulebook - which is broken down into themes such as how countries will report and monitor their national pledges to curb greenhouse gas emissions and update their emissions plans.

Not everyone is happy with everything, but the process is still on track and it is something to build on, several ministers said. Some countries and green groups criticized the outcome for failing to urge increased ambitions on emissions cuts sufficiently to curb rising temperatures. Poorer nations vulnerable to climate change also wanted more clarity on how an already agreed $100 billion a year of climate finance by 2020 will be provided and on efforts to build on that amount further from the end of the decade.

Researchers at the University of Geneva Switzerland have used NASA's Hubble telescope to find an exoplanet that's evaporating. The exoplanet, GJ 3470b, shows signs of losing hydrogen in its atmosphere, causing it to shrink. USA Today reports: The study is part of exploration into "hot Neptunes," planets that are the size of Neptune, sit very close to their star, and have atmospheres as hot at 1,700 degrees Fahrenheit, says NASA. Finding a "hot Neptune" is rare because they sit so close to their star and tend to evaporate more quickly. In the case of GJ 3470b, scientists classify it as a "warmer" Neptune because it sits farther away from its star. The exoplanet discovered by astronauts is losing its atmosphere at a rate 100 times faster than a previous "warmer" Neptune planet discovered a few years before, according to a study published Thursday in the journal "Astronomy & Astrophysics." The planet sits 3.7 million miles from its star. For comparison, Earth is 92.9 million miles from the sun. Researchers say these "hot Neptune" planets shrink in size and morph into "Super Earths," versions of our planet that are massive and more rocky.

After years of waiting for someone to design an ARM server processor that could work at scale on the cloud, Amazon Web Services just went ahead and designed its own. From a report: Vice president of infrastructure Peter DeSantis introduced the AWS Graviton Processor Monday night, adding a third chip option for cloud customers alongside instances that use processors from Intel and AMD. The company did not provide a lot of details about the processor itself, but DeSantis said that it was designed for scale-out workloads that benefit from a lot of servers chipping away at a problem. The new instances will be known as EC2 A1, and they can run applications written for Amazon Linux, Red Hat Enterprise Linux, and Ubuntu. They are generally available in four regions: US East (Northern Virginia), US East (Ohio), US West (Oregon), and Europe (Ireland). Intel dominates the market for server processors, both in the cloud and in the on-premises server market. AMD has tried to challenge that lead over the years with little success, although its new Epyc processors have been well-received by server buyers and cloud companies like AWS. John Gruber of DaringFireball, where we first spotted this story, adds: Makes you wonder what the hell is going on at Intel and AMD -- first they missed out on mobile, now they're missing out on the cloud's move to power-efficient ARM chips.

Tumblr has reportedly been removed from Apple's App Store due to child pornography issues. "The app has been missing from the store since November 16th, but until now the reason for its absence was unclear -- initially Tumblr simply said it was 'working to resolve the issue with the iOS app,'" reports The Verge. "However, after Download.com approached Tumblr with sources claiming that the reason was related to the discovery of child pornography on the service, the Yahoo-owned social media network issued a new statement confirming the matter." From the report: In its updated statement, Tumblr said that while every image uploaded to the platform is "scanned against an industry database of child sexual abuse material" to filter out explicit images, a "routine audit" discovered content that was absent from the database, allowing it to slip through the filter. Although Tumblr says the content was immediately removed, its app continues to be unavailable on the App Store. It's still available in the Google Play store for Android users, however.