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Updated: 22 hours 55 min ago

Jupiter's Moon Europa May Have Water Plumes That Rise Up About 125 Miles

Tue, 09/27/2016 - 03:00
NASA's Hubble Space Telescope released new images Monday, which will be published in The Astrophysicial Journal later this week, that show what appears to be plumes of water vapor erupting out of the icy surface of Jupiter's moon Europa. The discovery is especially intriguing as it means that the ocean below Europa's surface could be probed without having to drill through miles of ice. NPR reports: Europa is one of the most intriguing places in the solar system because it's thought to have a vast subterranean ocean with twice as much water as Earth's oceans. This saltwater ocean is a tempting target for astrobiologists who want to find places beyond Earth that could support life. The trouble with exploring this ocean is that the water is hidden beneath an icy crust that's miles thick. But if plumes are indeed erupting from Europa, a spacecraft could potentially fly through them and analyze their chemistry -- much like NASA's Cassini probe did recently when it sped close to Enceladus, a moon of Saturn that has small geysers. Scientists used Hubble to watch Europa's silhouette as the moon moved across Jupiter's bright background. They looked, in ultraviolet light, for signs of plumes coming from the moon's surface. They did this 10 separate times over a period of 15 months, and saw what could be plumes on three occasions. NASA says the plumes are estimated to rise up about 125 miles, and presumably material then rains back down onto Europa's surface. Using Hubble in a different way, scientists previously saw hints that salty water occasionally travels up to the moon's surface. In 2012, the telescope detected evidence of water vapor above Europa's south polar region, suggesting the existence of plumes that shoot out into space. The agency's Juno spacecraft is currently in orbit around Jupiter, but it isn't slated to take any observations of Europa.

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SpaceX Tests Its Raptor Engine For Future Mars Flights

Tue, 09/27/2016 - 00:00
Thelasko writes: Elon Musk is preparing to unveil his plans to colonize Mars at the 67th annual International Astronautical Congress tomorrow. As a tease to his lecture, he has released some details about the Raptor engine on Twitter, including pictures. Mr. Musk states that, "Production Raptor coal is specific impulse of 382 seconds and thrust of 3 MN (~310 metric tons) at 300 bar." He goes on to note that the specific impulse spec is at Mars ambient pressure. The Raptor interplanetary engine is designed for use with Space X's Mars Colonial Transporter craft. Musk notes that the "chamber pressure runs three times what's present in the Merlin engine currently used to power Falcon 9," according to TechCrunch. "Merlin has specific impulse of 282 seconds (311 seconds in the vacuum of space), and a relatively paltry 654 kilonewton (0.6 MN) at sea level, or 716 kN (0.7 MN) in a vacuum. You can view a picture of the "Mach diamonds" here, which are visible in the engine's exhaust.

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Roller Coasters Could Help People Pass Kidney Stones, Says Study

Mon, 09/26/2016 - 20:30
An anonymous reader quotes a report from NBC News: Two researchers who took science to the amusement park say they've found that a thrilling roller coaster ride just might help people shake out pesky kidney stones. Dr. David Wartinger of Michigan State University said he'd heard patient after patient tell him about how they had passed kidney stones after riding one particular ride: the Big Thunder Mountain Railroad roller coaster at Walt Disney World in Orlando. He and a colleague, Dr. Marc Mitchell, had also seen some media reports about people who passed kidney stones while bungee jumping and riding roller coasters. So they decided to leave East Lansing to head to Orlando in the name of medical research. To simulate the human body as best they could, they made an artificial human kidney model out of clear silicone gel and loaded it up with real human kidney stones. They rode the roller coaster holding their kidney contraption between them in a backpack positioned at kidney height. They took 20 rides and noted what happened to each kidney stone. Riding in the back of the roller coaster train seemed to really knock the kidney stones out, they reported in The Journal of the American Osteopathic Association. "Front seating on the roller coaster resulted in a passage rate of four of 24," they wrote. "Rear seating on the roller coaster resulted in a passage rate of 23 of 36." They mainly tested the one roller coaster ride, and it's a fairly simple one. "The Big Thunder Mountain roller coaster is not a terribly dynamic ride," Wartinger said. "It's not very fast. It is not very tall. It makes sharp left and right turns that have some vibration." Wartinger suspects many different thrill rides would have the same effect. "It's not like there anything unique about this one coaster," he said. The pair have now run their test 200 more times and say the findings are consistent. Now they want to try other amusement park rides.

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US Department of Labor Is Suing Peter Thiel's Startup 'Palantir' For Discriminating Against Asians

Mon, 09/26/2016 - 19:10
Palantir Technologies is a secretive start-up in Silicon Valley that specializes in big data analysis. It was founded in 2004 by Peter Thiel, Alex Karp, Joe Lonsdale, Stephen Cohen, and Nathan Gettings, and is backed by the FBI and CIA as it "helps government agencies track down terrorists and uncover financial fraud," according to Reuters. Today, the U.S. Department of Labor filed a lawsuit against the company, alleging that it discriminated against Asian job applicants. Reuters reports: The lawsuit alleges Palantir routinely eliminated Asian applicants in the resume screening and telephone interview phases, even when they were as qualified as white applicants. In one example cited by the Labor Department, Palantir reviewed a pool of more than 130 qualified applicants for the role of engineering intern. About 73 percent of those who applied were Asian. The lawsuit, which covers Palantir's conduct between January 2010 and the present, said the company hired 17 non-Asian applicants and four Asians. "The likelihood that this result occurred according to chance is approximately one in a billion," said the lawsuit, which was filed with the department's Office of Administrative Law Judges. The majority of Palantir's hires as engineering interns, as well as two other engineering positions, "came from an employee referral system that disproportionately excluded Asians," the lawsuit said. Palantir denied the allegations in a statement and said it intends to "vigorously defend" against them. The lawsuit seeks relief for persons affected, including lost wages.

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Study: Earth Is At Its Warmest In 120,000 Years

Mon, 09/26/2016 - 18:30
An anonymous reader quotes a report from Washington Post: As part of her doctoral dissertation at Stanford University, Carolyn Snyder, now a climate policy official at the U.S. Environmental Protection Agency, created a continuous 2 million year temperature record, much longer than a previous 22,000 year record. Snyder's temperature reconstruction, published Monday in the journal Nature, doesn't estimate temperature for a single year, but averages 5,000-year time periods going back a couple million years. Snyder based her reconstruction on 61 different sea surface temperature proxies from across the globe, such as ratios between magnesium and calcium, species makeup and acidity. But the further the study goes back in time, especially after half a million years, the fewer of those proxies are available, making the estimates less certain, she said. These are rough estimates with large margins of errors, she said. But she also found that the temperature changes correlated well to carbon dioxide levels. Temperatures averaged out over the most recent 5,000 years -- which includes the last 125 years or so of industrial emissions of heat-trapping gases -- are generally warmer than they have been since about 120,000 years ago or so, Snyder found. And two interglacial time periods, the one 120,000 years ago and another just about 2 million years ago, were the warmest Snyder tracked. They were about 3.6 degrees (2 degrees Celsius) warmer than the current 5,000-year average. Snyder said if climate factors are the same as in the past -- and that's a big if -- Earth is already committed to another 7 degrees or so (about 4 degrees Celsius) of warming over the next few thousand years. "This is based on what happened in the past, Snyder noted. "In the past it wasn't humans messing with the atmosphere."

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Trump Takes On 'Crooked Hillary' With Snapchat Geofilter

Mon, 09/26/2016 - 17:50
In an effort to appeal to more young voters, U.S. Republican presidential nominee Donald Trump has unveiled a "geofilter" ad campaign for Snapchat that slaps on the banner phrase "Donald J. Trump vs. Crooked Hillary" to a user's photo and video Snaps. Ars Technica reports: "The ad rolled out to American Snapchat users today, just ahead of the 2016 presidential election's first major debate between Trump and Hillary Clinton (the debate starts tonight at 9pm EDT). The ad joins the usual geofilter available to Snapchat users, which usually list the name of a city or a nearby event as determined by GPS and time information. The campaign differs from the deluge of text, photo, and video ads that politicans have relied on in recent years, as it doesn't publish or display to the public without a personal photo or video attached. While other political campaigns have paid for geofilter ad campaigns on Snapchat in the past, including Clinton and Bernie Sanders, those have been timed and targeted for smaller-scale events like political conventions and primary voting periods. In a statement to CNN, the Clinton campaign said that Trump was "throwing his money into a fire pit," and it pointed out the ad's potential for backfiring, since "given Trump's deep unpopularity with young voters, [the ad's phrasing] will be used mainly at [his] own expense."

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Windows 10 Will Soon Run Edge In a Virtual Machine To Keep You Safe

Mon, 09/26/2016 - 17:10
An anonymous reader quotes a report from Ars Technica: Microsoft has announced that the next major update to Windows 10 will run its Edge browser in a lightweight virtual machine. Running the update in a virtual machine will make exploiting the browser and attacking the operating system or compromising user data more challenging. Called Windows Defender Application Guard for Microsoft Edge, the new capability builds on the virtual machine-based security that was first introduced last summer in Windows 10. Windows 10's Virtualization Based Security (VBS) uses small virtual machines and the Hyper-V hypervisor to isolate certain critical data and processes from the rest of the system. The most important of these is Credential Guard, which stores network credentials and password hashes in an isolated virtual machine. This isolation prevents the popular MimiKatz tool from harvesting those password hashes. In turn, it also prevents a hacker from breaking into one machine and then using stolen credentials to spread to other machines on the same network. Credential Guard's virtual machine is very small and lightweight, running only a relatively simple process to manage credentials. Application Guard will go much further by running large parts of the Edge browser within a virtual machine. This virtual machine won't, however, need a full operating system running inside it -- just a minimal set of Windows features required to run the browser. Because Application Guard is running in a virtual machine it will have a much higher barrier between it and the host platform. It can't see other processes, it can't access local storage, it can't access any other installed applications, and, critically, it can't attack the kernel of the host system. In its first iteration, Application Guard will only be available for Edge. Microsoft won't provide an API or let other applications use it. As with other VBS features, Application Guard will also only be available to users of Windows 10 Enterprise, with administrative control through group policies. Administrators will be able to mark some sites as trusted, and those sites won't use the virtual machine. Admins also be able to control whether untrusted sites can use the clipboard or print.

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Researcher Modifies Sieve of Eratosthenes To Work With Less Physical Memory Space

Mon, 09/26/2016 - 16:30
grcumb writes: Peruvian mathematician Harald Helfgott made his mark on the history of mathematics by solving Goldbach's weak conjecture, which states that every odd number greater than 7 can be expressed as the sum of three prime numbers. Now, according to Scientific American, he's found a better solution to the sieve of Eratosthenes: "In order to determine with this sieve all primes between 1 and 100, for example, one has to write down the list of numbers in numerical order and start crossing them out in a certain order: first, the multiples of 2 (except the 2); then, the multiples of 3, except the 3; and so on, starting by the next number that had not been crossed out. The numbers that survive this procedure will be the primes. The method can be formulated as an algorithm." But now, Helfgott has found a method to drastically reduce the amount of RAM required to run the algorithm: "Now, inspired by combined approaches to the analytical 100-year-old technique called the circle method, Helfgott was able to modify the sieve of Eratosthenes to work with less physical memory space. In mathematical terms: instead of needing a space N, now it is enough to have the cube root of N." So what will be the impact of this? Will we see cheaper, lower-power encryption devices? Or maybe quicker cracking times in brute force attacks? Mathematician Jean Carlos Cortissoz Iriarte of Cornell University and Los Andes University offers an analogy: "Let's pretend that you are a computer and that to store data in your memory you use sheets of paper. If to calculate the primes between 1 and 1,000,000, you need 200 reams of paper (10,000 sheets), and with the algorithm proposed by Helfgott you will only need one fifth of a ream (about 100 sheets)," he says.

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ISP To FCC: Using The Internet Is Like Eating Oreos

Mon, 09/26/2016 - 15:45
New submitter Rick Schumann shares with us a report highlighting an analogy presented by an ISP that relates Double Stuf Oreos to the internet. Specifically, that Double Stuf Oreos cost more than regular Oreos, and therefore you should pay more for internet: The Consumerist reports: "Ars Technica first spotted the crumbly filing, from small (and much-loathed) provider Mediacom. Mediacom's comment is in response to the same proceeding that Netflix commented on earlier this month. However, while Netflix actually addressed data and the ways in which their customers use it, Mediacom went for the more metaphor-driven approach. The letter literally starts out under the header, 'You Have to Pay Extra For Double-Stuffed,' and posits that you, the consumer, are out for a walk with $2 in your pocket when you suddenly develop a ferocious craving for Oreo cookies." Of course their analogy is highly questionable, since transmitting data over a network doesn't actually consume anything, now does it? You eat the cookie, the cookie is gone, but you transmit data over a network, the network is still there and can transmit data endlessly. Mediacom's assertion that the Internet is like a cookie you eat, is like saying copying a file on your computer somehow diminishes or degrades the original file, which of course is ridiculous.

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Mozilla's Proposed Conclusion: Game Over For WoSign and Startcom?

Mon, 09/26/2016 - 15:05
Reader Zocalo writes: Over the last several months Mozilla has been investigating a large number of breaches of what Mozilla deems to be acceptable CA protocols by the Chinese root CA WoSign and their perhaps better known subsidiary StartCom, whose acquisition by WoSign is one of the issues in question. Mozilla has now published their proposed solution (GoogleDocs link), and it's not looking good for WoSign and Startcom. Mozilla's position is that they have lost trust in WoSign and, by association StartCom, with a proposed action to give WoSign and StartCom a "timeout" by distrusting any certificates issued after a date to be determined in the near future for a period of one year, essentially preventing them issuing any certificates that will be trusted by Mozilla. Attempts to circumvent this by back-dating the valid-from date will result in an immediate and permanent revocation of trust, and there are some major actions required to re-establish that trust at the end of the time out as well.This seems like a rather elegant, if somewhat draconian, solution to the issue of what to do when a CA steps out of line. Revoking trust for certificates issued after a given date does not invalidate existing certificates and thereby inconvenience their owners, but it does put a severe -- and potentially business-ending -- penalty on the CA in question. Basically, WoSign and StartCom will have a year where they cannot issue any new certificates that Mozilla will trust, and will also have to inform any existing customers that have certificate renewals due within that period they cannot do so and they will need to go else where -- hardly good PR! What does Slashdot think? Is Mozilla going too far here, or is their proposal justified and reasonable given WoSign's actions, making a good template for potential future breaches of trust by root CAs, particularly in the wake of other CA trust breaches by the likes of CNNIC, DigiNotar, and Symantec?

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Japanese To Pay Utility Bills Using Bitcoin

Mon, 09/26/2016 - 14:25
An anonymous reader quotes a report from The Stack: Japanese citizens will soon be able to pay their utility bills using bitcoin. The facility is being provided by Coincheck Denki, a new service offered by the Japanese bitcoin company, which will be available to users in November. Coincheck outlined the new plan on its website. Also called 'Coincheck Electricity,' it will allow users to pay their electricity bills directly from their Coincheck bitcoin wallet. It also offers a discount plan for heavy users of electricity, with 4-6% of the total bill discounted for heavy users of electricity who pay in bitcoin. Coincheck's parent company, Reju Press, initially partnered with Mitsuwa Inc., to create the bitcoin payment system. Coincheck now works with Mitsuwa subsidiary E-Net Inc., and has formed a partnership with Marubeni Power Retail Corporation, which operates power plants in 17 locations in central Japan. Marubeni has offices in 66 countries worldwide, although no plans have been announced to take the bitcoin payment option outside of Japan. While the initial bitcoin payment rollout is for electricity bills, Coincheck plans to expand its offerings to bitcoin payment for 'life infrastructure,' to include payment of gas, water and mobile phone bills. It may even partner with landlords to allow customers of Coincheck to pay rent using bitcoin. The bitcoin payment plan will be rolled out in Chubu, Kanto (including Tokyo) and Kansai regions to start, with additional areas to be added sequentially. The company hopes to offer bitcoin payment options to one million electric customers within the first year.

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China's Giant Radio Telescope Begins Searching For Signals From Space

Mon, 09/26/2016 - 13:45
Years of work and millions of dollars later, China finished its alien-hunting telescope in May this year. Now the country says its telescope has begun its operation. The company flipped the switch over the weekend, hoping to find signals from stars and galaxies -- and more importantly from extraterrestrial life. The telescope also illustrates China's growing ambition to stay among the frontrunners in space efforts. AP reports: Beijing has poured billions into such ambitious scientific projects as well as its military-backed space program, which saw the launch of China's second space station earlier this month. Measuring 500 metres in diameter, the radio telescope is nestled in a natural basin within a stunning landscape of lush green karst formations in southern Guizhou province. It took five years and $180 million to complete and surpasses that of the 300-meter Arecibo Observatory in Puerto Rico, a dish used in research on stars that led to a Nobel Prize. The official Xinhua News Agency said hundreds of astronomers and enthusiasts watched the launch of the Five-hundred-meter Aperture Spherical Telescope, or FAST, in the county of Pingtang. Researchers quoted by state media said FAST would search for gravitational waves, detect radio emissions from stars and galaxies and listen for signs of intelligent extraterrestrial life. "The ultimate goal of FAST is to discover the laws of the development of the universe," Qian Lei, an associate researcher with the National Astronomical Observatories of the Chinese Academy of Sciences, told state broadcaster CCTV. "In theory, if there is civilization in outer space, the radio signal it sends will be similar to the signal we can receive when a pulsar (spinning neutron star) is approaching us," Qian said.

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As We Speak, Teen Social Site Is Leaking Millions Of Plaintext Passwords

Mon, 09/26/2016 - 13:05
Dan Goodin, reporting for ArsTechnica: A social hangout website for teenage girls has sprung a leak that's exposing plaintext passwords protecting as many as 5.5 million user accounts. As this post went live, all attempts to get the leak plugged had failed. Operators of i-Dressup didn't respond to messages sent by Ars informing them that a hacker has already downloaded more than 2.2 million of the improperly stored account credentials. The hacker said it took him about three weeks to obtain the cache and that there's nothing stopping him or others from downloading the entire database of slightly more than 5.5 million entries. The hacker said he acquired the e-mail addresses and passwords by using a SQL injection attack that exploited vulnerabilities in the i-Dressup website. The hacker provided the 2.2 million account credentials both to Ars and breach notification service Have I Been Pwned?. By plugging randomly selected e-mail addresses into the forgotten password section of i-Dressup, both Ars and Have I Been Pwned? principal Troy Hunt found that they all were used to register accounts on the site. Ars then used the contact us page on i-Dressup to privately notify operators of the vulnerability, but more than five days later, no one has responded and the bug remains unfixed.

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Planes, Trains, and Automobiles Have Become Top Carbon Polluters

Mon, 09/26/2016 - 12:25
Transportation is likely to surpass the electricity sector in 2016 as the largest source of carbon dioxide emissions in the United States, according to a new analysis of government data, MIT Technology reports. From the article: In 2008, the global financial crisis caused widespread declines in energy use. In the U.S., that coincided with the early stages of a large-scale shift away from coal toward cleaner-burning natural gas as a way to generate electricity. As a result, carbon dioxide emissions from the electricity sector have continued to decline from their 2007 peak, even as the economy has resumed growing. The trend line for the transportation sector is less encouraging. Transportation emissions have begun rising as the economy rebounds. John DeCicco at the University of Michigan Energy Institute, who wrote the study, attributes the rebound we've seen during the past four years to straightforward causes: economic recovery and more affordable fuel prices. Vehicle sales numbers have been rising for several years, in particular for trucks and SUVs, and people are traveling more miles.

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Plex Cloud Means Saying Goodbye To the Always-On PC

Mon, 09/26/2016 - 11:45
Finally, you don't need an always-on PC or any other network-attached storage device if you want to use Plex's media player. The company has announced that it now allows you to stream TV shows and movies from your own collection via a new online option called Plex Cloud. From a report on The Verge: Plex is giving the world another reason to subscribe to Plex Pass subscriptions today with the launch of Plex Cloud. As the name suggests, Plex Cloud eliminates the need to run the Plex Media Server on a computer or Networked Attached Storage (NAS) in your house. It does, however, require a subscription to Amazon Drive ($59.99 per year for unlimited storage) and the aforementioned Plex Pass ($4.99 per month or $39.99 per year). Plex Cloud functions just like a regular Plex Media Server giving you access to your media -- no matter how you acquire it -- from an incredibly broad range of devices. Most, but not all Plex features are available in today's beta.

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Boot Linux (or OpenBSD Or Oberon Or FreeDOS) In Your Browser

Mon, 09/26/2016 - 04:34
Long-time Slashdot reader DeQueue writes: Back in 2011 Fabrice Bellard, the initiator of the QEMU emulator, wrote a PC emulator in JavaScript that let you boot Linux in your browser. But he didn't stop there. On his website he now has images that let you boot Oberon, Arch Linux, FreeDOS, OpenBSD, Solar OS and more recent versions of Linux such as 2.6 or 3.18 (the 3.18 image includes internet access). You can also boot to a CD image, or a floppy image, or a hard drive disk image on your local machine. And, if you don't need yet another operating system on your computer, you can even boot to Bootchess and play chess

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Ask Slashdot: Is My IoT Device Part of a Botnet?

Mon, 09/26/2016 - 00:34
As our DVRs, cameras, and routers join the Internet of Things, long-time Slashdot reader galgon wonders if he's already been compromised: There has been a number of stories of IoT devices becoming part of botnets and being used in distributed denial of service attacks. If these devices are seemingly working correctly to the user, how would they ever know the device was compromised? Is there anything the average user can do to detect when they have a misbehaving device on their network? I'm curious how many Slashdot readers are even using IoT devices -- so leave your best answers in the comments. How would you know if your IoT device is part of a botnet?

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Which Programming Language Is Most Popular - The Final Answer?

Sun, 09/25/2016 - 20:39
An anonymous Slashdot reader writes: Following a common technique among political pollsters, a technology columnist combined the results from various measures of programming language popularity for a more definitive answer about the most important languages to study. He used IEEE Spectrum's interactive list of the top programming languages, which lets you adjust the weight given to the number of job listings and number or open source projects, then combined it with the TIOBE Index (which is based on search engine results), and the PYPL Index, which checks the number of tutorials for each programming language on Google. The results? "The top cluster contains Java, C, Python, and C++. Without a doubt, you should attain familiarity with these four languages." He points out they're not tied to a specific programming platform, unlike languages in the second cluster -- JavaScript, C#, PHP, and Swift -- while the last two languages in the top 10 were Objective-C and R. "The C-family of languages still dominates. Java, C++, C, C#, and even Objective-C are all C-based languages. If you're only going to learn one language, you should pick one of those." But his ultimate advice is to "learn multiple languages and multiple frameworks... Programming is not just an intellectual exercise. You have to actually make stuff."

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Amazon Pursues More Renewable Energy, Following Google, Apple, And Facebook

Sun, 09/25/2016 - 18:39
An anonymous Slashdot reader writes: Amazon will open a 100-turbine, 253-megawatt wind farm in Texas by the end of next year -- generating enough energy to power almost 90,000 U.S. homes. Amazon already has wind farms in Indiana, North Carolina, and Ohio (plus a solar farm in Virginia), and 40% of the power for AWS already comes from renewable sources, but Amazon's long-term plan is to raise that to 100%. But several of the world's largest tech companies are already pursuing their own aggressive renewable energy programs, according to Fortune. Google "has said it's the largest non-utility purchaser of renewable energy in the world. Apple claims that in 2015, 93% of its energy came from renewable sources, and its data centers are already 100% run on renewables (though that claim does rely on carbon trading). Facebook, which also uses Texas wind facilities, is aiming for 50% of its data center power to come from renewables by 2018. Even slightly smaller companies like Salesforce have made big commitments to renewable energy." Last year for the first time utilities actually bought less than half the power produced by wind farms -- because tech companies, universities, and cities had already locked it down with long-term contracts.

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What Vint Cerf Would Do Differently

Sun, 09/25/2016 - 16:39
An anonymous Slashdot reader quotes ComputerWorld: Vint Cerf is considered a father of the internet, but that doesn't mean there aren't things he would do differently if given a fresh chance to create it all over again. "If I could have justified it, putting in a 128-bit address space would have been nice so we wouldn't have to go through this painful, 20-year process of going from IPv4 to IPv6," Cerf told an audience of journalists Thursday... For security, public key cryptography is another thing Cerf would like to have added, had it been feasible. Trouble is, neither idea is likely to have made it into the final result at the time. "I doubt I could have gotten away with either one," said Cerf, who won a Turing Award in 2004 and is now vice president and chief internet evangelist at Google. "So today we have to retrofit... If I could go back and put in public key crypto, I probably would try." Vint Cerf answered questions from Slashdot users back in 2011.

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