A nuclear power system that could one day provide juice to colonies on Mars is closer to being ready than previously expected. According to project team members, the Kilopower experiment fission reactor could be ready for its first in-space trial by 2022. Space.com reports: A flight test is the next big step for the Kilopower experimental fission reactor, which aced a series of critical ground tests from November 2017 through March 2018. No off-Earth demonstration is on the books yet, but Kilopower should be ready to go by 2022 or so if need be, said Patrick McClure, Kilopower project lead at the Department of Energy's (DOE) Los Alamos National Laboratory in New Mexico.

"I think we could do this in three years and be ready for flight," McClure said late last month during a presentation with NASA's Future In-Space Operations working group. "I think three years is a very doable time frame," he added, stressing that this is his opinion, not necessarily that of NASA, which is developing the Kilopower project along with the DOE. As its name suggests, the Kilopower reactor is designed to generate at least 1 kilowatt of electrical power (1 kWe). Its output is scalable up to about 10 kWe, and it can operate for about 15 years, McClure said. So, four scaled-up Kilopower reactors could meet the energy needs of NASA explorers, with a fifth reactor likely landed to provide a spare.

pgmrdlm shares a report from StudyFinds: So many people, especially young people and teenagers, spend a significant period of time each day staring at a screen of some kind, whether that be a computer, smartphone, tablet, or the regular old TV. Now, a new study is warning parents that all that screen time may be behind a stunning rise in children who need prescription glasses. According to the report released by United Kingdom-based eye care company Scrivens Opticians, the percentage of 13-16 year olds in the U.K. who need glasses has nearly doubled over the past seven years -- from 20% in 2012 to 35% in 2018. Two-thirds of those teens were diagnosed as being myopic, or short-sighted. Researchers theorize that this significant increase in eye problems among young people is likely linked to excessive time spent staring at screens, which can lead to eye strain, shortsightedness, and blurred vision. In fact, the study also found that the average 13-16 year old spends around 26 hours per week staring at a smartphone, playing video games, or watching TV.

An anonymous reader quotes a report from The Wall Street Journal: Auto makers for two decades have leaned on hybrid vehicles to help them comply with regulations on fuel consumption and give customers greener options in the showroom. Now, two of the world's largest car manufacturers say they see no future for them in their U.S. lineups. General Motors and Volkswagen are shifting the bulk of their future investment into fully electric cars (Warning: source paywalled; alternative source), seeing hybrids, which save fuel by combining a gasoline engine with an electric motor, as only a stopgap to ultimately meeting tougher tailpipe-emissions requirements, particularly in China and Europe.

GM plans to launch 20 fully electric vehicles world-wide in the next four years, including plug-in models in the U.S. for the Chevy and Cadillac brands. Volkswagen also has committed billions to producing more battery-powered models, including introducing a small plug-in SUV in the U.S. next year and an electric version of its minibus around 2022. VW and GM are focused on all-electric cars largely because of China, where new regulations require car companies to sell a minimum number of zero-emissions vehicles to avoid financial penalties. VW plans to use its electric-car expansion in China to build scale and drive down prices faster in the U.S., said Scott Keogh, VW's U.S. chief. "If I had a dollar more to invest, would I spend it on a hybrid? Or would I spend it on the answer that we all know is going to happen, and get there faster and better than anybody else?" GM President Mark Reuss said in an interview.

Samsung has announced a new image sensor for phones that breaks records. Built-in partnership with Xiaomi, the new Samsung ISOCELL Bright HMX is the world's first mobile image sensor that goes beyond 100 million pixels. From a report: At 108MP, the new sensor allows for higher quality pictures in different light conditions. The resolution, which Samsung says is equivalent to DSLR cameras, allows for "extremely sharp photographs rich in detail," according to the firm. It's the first mobile image sensor to adopt a large lens size of 1/1.33-inch that allows the lens to absorb more light, leading to better quality pictures in low-light conditions. There's also an intelligent Tetracell technology that uses a pixel-merging method to "imitate" big-pixel sensors, allowing phones to produce brighter 27MP images. [...] The image sensor is built to tackle video recording as well, with Samsung claiming no losses in field-of-view when recording videos at resolutions up to 6K at 30fps.

Long-time Slashdot reader Ken McE shared a video of a new working prototype for a wearable tail.

Engadget reports: There are lots of companies who make wearable tails for humans, but they're usually for cosplay or other entertainment pursuits. Researchers at Keio University in Japan have created a wearable animated tail that promises to genuinely augment the wearer's capabilities -- not just appearance -- by improving their balance and agility.

The easiest way to understand what inspired this creation is to watch a video of monkeys effortlessly leaping from tree to tree. Their tails not only serve as an additional limb for grasping branches but also help them reposition their bodies mid-flight for a safe landing by shifting the monkey's center of balance as it moves. The Arque tail, as it's been named, does essentially the same thing for humans, although leaping from the highest branches of a tree isn't recommended just yet.... Inside the tail are a set of four artificial muscles powered by compressed air that contract and expand in different combinations to move and curl the tail in any direction.
Though the researchers have built a prototype, their video describes it as a "proposed tail" -- specifically, an artificial biomimicry-inspired anthropomorphic one. So how exactly would the tail controlled externally? The video describes its ability "to passively provide forces to the user's body based on the estimated center of gravity of his posture in order to correct his body balance." So basically, the tail would have a mind of its own, like the arms of Doctor Octopus?

"We also demonstrated a different approach for using the tail other than equilibrium maintenance, which is to change the center of mass of the user to off-balance his posture."

itwbennett writes: Researchers from security firm Bitdefender discovered and reported a year ago a new CPU vulnerability that 'abuses a system instruction called SWAPGS and can bypass mitigations put in place for previous speculative execution vulnerabilities like Spectre,' writes Lucian Constantin for CSO.

There are three attack scenarios involving SWAPGS, the most serious of which 'can allow attackers to leak the contents of arbitrary kernel memory addresses. This is similar to the impact of the Spectre vulnerability.' Microsoft released mitigations for the vulnerability in July's Patch Tuesday, although details were withheld until August 6 when Bitdefender released its whitepaper and Microsoft published a security advisory.

Earlier this week on the Linux kernel mailing list, Artem S. Tashkinov described a low-memory scenario where "the system will stall hard. You will barely be able to move the mouse pointer. Your disk LED will be flashing incessantly..."

"I'm afraid I have bad news for the people snickering at Linux here," wrote Chris Siebenmann, a sys-admin at the University of Toronto's CS lab. "If you're running without swap space, you can probably get any Unix to behave this way under memory pressure..." In the old days, this usually was not very much of an issue because system RAM was generally large compared to the size of programs and thus the amount of file-backed pages that were likely to be in memory. That's no longer the case today; modern large programs such as Firefox and its shared libraries can have significant amounts of file-backed code and data pages (in addition to their often large use of dynamically allocated memory, ie anonymous pages).
A production engineer (now on Facebook's Web Foundation team) wrote about experiencing similar issues years ago when another company had disabled swapping when they replaced or reinstalled machines -- leading to lots of pages from hosts that had to be dealt with. This week they wrote: I stand by my original position: have some swap. Not a lot. Just a little. Linux boxes just plain act weirdly without it. This is not permission to beat your machine silly in terms of memory allocation, either... If you allocate all of the RAM on the machine, you have screwed the kernel out of buffer cache it sorely needs. Back off.

Put another way, disk I/O that isn't brutally slow costs memory. Network I/O costs memory. All kinds of stuff costs memory. It's not JUST the RSS of your process. Other stuff you do needs space to operate. If you try to fill a 2 GB box with 2 GB of data, something's going to have a bad day! You have to leave room for the actual system to run or it's going to grind to a stop.

"Today, AMD launched its Rome Second Generation EPYC CPUs, the AMD EPYC 7001 & 7002 series," writes Slashdot reader SolarAxix. "Was the hype real? According to Anandtech's review of the top-of-the-line EPYC 7742 with 64 cores and 128 threads (for a total of 128 cores and 256 threads), it seems to be the case." From the report: ...So has AMD done the unthinkable? Beaten Intel by such a large margin that there is no contest? For now, based on our preliminary testing, that is the case. The launch of AMD's second generation EPYC processors is nothing short of historic, beating the competition by a large margin in almost every metric: performance, performance per watt and performance per dollar. "

According to 9to5Google, Google's upcoming Pixel 4 and Pixel 4 XL smartphones will feature 90Hz refresh rates, 6GB of RAM, and a DSLR attachment, among other features not reported until now. From the report: First, the basics: There will be a Pixel 4 and Pixel 4 XL, and they will both more or less have the same features. They are phones. As we've already seen, they will have glass on the front and back, and a large camera bump. The have a sizable top bezel on the front housing the Soli radar chip, the speaker, a single front shooter, and the suite of sensors for face unlock. Other familiar aesthetic flourishes like a colored lock button and the usual 'G' logo on the back are also in tow. Things get a little interesting with the display specs. Pixel 4 and Pixel 4 XL will have 5.7-inch and 6.3-inch OLED displays, respectively -- the smaller is Full HD+, while the larger is Quad HD+. We can confirm now, though, that both will be 90 Hz displays, a feature Google is planning to call "Smooth Display."

We also have word on the Pixel 4 and Pixel 4 XL camera specs. There are two sensors on the rear, one of which is a 12MP shooter with phase-detect auto-focus. Also, confirming details that we unearthed in the Google Camera app, the other rear sensor on the Google Pixel 4 and Pixel 4 XL is a 16MP telephoto lens. Another interesting tidbit on the camera side: We're told Google is developing a DSLR-like attachment for the Pixel 4 that may become an available accessory. In other Pixel 4 specs, the smaller 5.7-inch Google Pixel 4 will have a 2,800 mAh battery, while the larger model will have a 3,700 mAh battery. That means, compared to last year, the smaller Pixel will have a slightly smaller battery (down from 2,915 mAh), while the larger Pixel will have a notably beefier one (up from 3,430 mAh). Both devices will pack the Snapdragon 855, get an appreciated bump to 6GB of RAM, and will be available in both 64GB and 128GB variants in the United States. Finally, we can confirm that both Pixel 4 models will have stereo speakers, the Titan M security module that was introduced with the Pixel 3, and of course, the latest version of Android with 3 years of software support. We're also told to expect that, like previous years, Google will show off some new Assistant features that will be exclusive to Pixel 4.

Earlier today at Samsung's Galaxy Note 10 launch event, Samsung announced several new features coming to DeX, an application that transforms your Samsung phone into a "desktop like" interface. The expanded version of DeX on the Note 10 now works with your computer, allowing you to transfer files (including photos), reply to messages and run mobile apps on your Mac or Windows PC. Engadget reports: The Note 10 also touts a Link to Windows option in the phone's Quick Panel that connects to a Windows 10 PC, sharing your phone's notifications on your PC screen with no specialized apps required. This concept also isn't completely new, but it's still helpful if you'd rather not check your phone for a must-see message or app alert. More Microsoft integrations are coming. You'll get to make and receive calls right from your PC (it's not clear if this is just for Samsung phones or for all Android devices). Samsung's Gallery app, meanwhile, will tie into OneDrive to upload photos to cloud storage. If the company has its way, your phone and computer will feel like extensions of each other.

An anonymous reader quotes a report from Bloomberg: Four Japanese companies have teamed up to build the world's first zero-emission tanker by mid-2021 that will be powered by large-capacity batteries and will operate in Tokyo Bay, according to a statement on Tuesday. The new company e5 Lab is a venture between Asahi Tanker, Exeno Yamamizu, Mitsui O.S.K. Lines and Mitsubishi. The global maritime industry is facing an onslaught of legislation to improve its environmental performance. From next year, a majority of vessels will have to burn fuel containing less sulfur. A challenge requiring even more innovation, though, is a goal to halve shipping's carbon emissions by 2050.

While fully-electric ships have struggled to penetrate major markets, momentum is gathering. Rolls-Royce said last year that it had started offering battery-powered ship engines, while Norway's Kongsberg Gruppen ASA is developing an electric container vessel. Still, there are challenges in making the technology applicable to ships navigating thousands of miles across oceans because of the need to recharge batteries. Industries from auto to aviation are also looking to go electric. Komatsu, the world's second-biggest construction equipment, has developed its first-battery powered electric diggers. Electric-plane company Eviation Aircraft, which has signed up its first customer, predicts that in a few years it may not be able to keep up with orders.

Hyundai has released a version of its Sonata hybrid that has solar panels to help charge its battery. The BBC reports: The Korean car maker said up to 60% of the power for the car's battery could be supplied if the solar roof was used for six hours a day. The panels would provide enough power to propel the Sonata for 1,300km (800miles) a year, it added. Hyundai said it planned to offer the roof as an optional extra on other models in its range. The solar-roof equipped Sonata will be on sale in North America and Korea. Hyundai said it had no plans to sell it in other regions. No price for the hybrid passenger car equipped with a solar roof has been given by Hyundai. Stephen Edelstein from Digital Trends said: "Hybrids like the Sonata have smaller battery packs than all-electric cars, so a solar roof can make a bigger difference in charging." With that said, solar cells add cost and weight to cars, so "it's unclear how effective they can be in the real world," he added.

dryriver writes: Almost everything in computing appears to be tainted by profits-driven decisionmaking today, from the privacy catastrophe of using personal electronic devices to forced SaaS software licensing. If Big Oil or Big Tobacco ran the computing sector, things probably wouldn't be much worse than they are today. So here's the question: Is a return to idealism possible in computing? Can we go back to the days when computing was about smart nerds building cool shit for other nerds? Or is computing so far gone now that things simply cannot get better anymore?

At the Flash Memory Summit today, Toshiba introduced a new form factor for NVMe SSDs that is small enough to be a removable alternative to soldered-down BGA SSDs. "The new XFMEXPRESS form factor allows for two or four PCIe lanes while taking up much less space than even the smallest M.2 22x30mm card size," reports AnandTech. "The XFMEXPRESS card size is 18x14x1.4mm, slightly larger and thicker than a microSD card. It mounts into a latching socket that increases the footprint up to 22.2x17.75x2.2mm." From the report: XFMEXPRESS is intended to bring the benefits of replaceable storage to devices that would normally be stuck with soldered BGA SSDs or eMMC and UFS modules. For consumer devices this opens the way for aftermarket capacity upgrades, and for embedded devices that need to be serviceable this can permit smaller overall dimensions. Device manufacturers also get a bit of supply chain flexibility since storage capacity can be adjusted later in the assembly process. XFMEXPRESS is not intended to be used as an externally-accessible slot like SD cards; swapping out an XFMEXPRESS SSD will require opening up the case of the device it's installed in, though unlike M.2 SSDs the XFMEXPRESS socket and retention mechanism itself is tool-less.

XFMEXPRESS will allow for similar performance to BGA SSDs. The PCIe x4 host interface will generally not be the bottleneck, especially in the near future when BGA SSDs start adopting PCIe gen4, which the XFMEXPRESS connector can support. Instead, SSDs in these small form factors are often thermally limited, and the XFMEXPRESS connector was designed to allow for easy heat dissipation with a metal lid that can serve as a heatspreader.

Backblaze: As of June 30, 2019, Backblaze had 110,640 spinning hard drives in our ever-expanding cloud storage ecosystem. Of that number, there were 1,980 boot drives and 108,660 data drives. This review looks at the Q2 2019 and lifetime hard drive failure rates of the data drive models currently in operation in our data centers.