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Submission + - Briny Water May Pool in Mars' Equatorial Soil (

astroengine writes: Mars may be a frigid desert, but perchlorate salts in the planet’s soil are lowering the freezing temperature of water, setting up conditions for liquid brines to form at equatorial regions, new research from NASA’s Curiosity rover shows. The discovery of subsurface water, even a trickle, around the planets warmer equatorial belt defies current climate models, though spacecraft orbiting Mars have found geologic evidence for transient liquid water, a phenomenon termed “recurring slope lineae.” The findings, published in this week’s Nature Geoscience, are based on nearly two years worth of atmospheric humidity and temperature measurements collected by the roving science laboratory Curiosity, which is exploring an ancient impact basin called Gale Crater near the planet’s equator. The brines, computer models show, form nightly in the upper 2 inches of the planet’s soil as perchlorates absorb atmospheric water vapor. As temperatures rise in the morning, the liquid evaporates. The levels of liquid, however, are too low to support terrestrial-type organisms, the researchers conclude. “It is not just a problem of water, but also temperature. The water activity and temperatures are so low in Mars that they are beyond the limits of cell reproduction and metabolism,” Javier Martin-Torres, with Lulea University of Technology, in Kiruna, Sweden, wrote in an email to Discovery News.
User Journal

Journal Journal: WTF? Autoplaying video ads with sound? 2

Slashdot used to be a safe site to visit, it never made noise when you didn't want it to, making it the go-to site for quiet, in-office news aggregation.

Not anymore. I just had to mute my laptop due to a slashdot auto-playing video advert.

Submission + - Windows exploit that Microsoft ignored in 1997 is back in new attack (

An anonymous reader writes: In 1997 Aaron Spangler discovered that a URL which began with the word 'file' (such as file:// could be used to prompt Windows OS to authenticate via SMB on a malicious authentication server, disclosing critical details such as hashed passwords, domains and user IDs. Microsoft never addressed the problem. Now researchers reveal [] that hackers can build on the original vulnerability to steal personal data, herd victim computers into botnets or completely take over a computer. The newly-dubbed 'Redirect to SMB' exploit works on a variety of applications, including popular anti-malware and general security suites, programs from Apple, Adobe and Microsoft — and works perfectly in the Windows 10 preview.

Comment Re:Expensive Bus? (Score 1) 123

In Tallinn, the ticket inspectors are still there though. And you can get fined if you are a local resident and should ride free, but forgot to "buy" your free ticket by swiping the RFID card in the bus. Even after several court rulings undoing such fines.

However, the idea of free public transport, is not that bad, if feasible. In Tallinn, it used to be heavily subsidized anyway, with only ~20% of the money coming from ticket sales (IIRC). They are also planning to extend this to railways within the city, which are operated by private companies - would definitely make some commutes quicker.

Submission + - Physicists Create Quantum Link Between Photons That Don't Exist at the Same Time (

sciencehabit writes: Physicists have long known that quantum mechanics allows for a subtle connection between quantum particles called entanglement, in which measuring one particle can instantly set the otherwise uncertain condition, or "state," of another particle—even if it's light years away. Now, experimenters in Israel have shown that they can entangle two photons that don't even exist at the same time. Anton Zeilinger, a physicist at the University of Vienna, says that the experiment demonstrates just how slippery the concepts of quantum mechanics are. "It's really neat because it shows more or less that quantum events are outside our everyday notions of space and time."

Submission + - Why Google taught developers how to hack Glass (

An anonymous reader writes: At Google I/O 2013, Google gave a presentation called 'Voiding Your Warranty: Hacking Glass,' which will ultimately benefit Google as much as third-party developers.

Where end-users fear to tread, developers are called. Drawn to the challenge of rooting Android devices that would scare end-users, developers could not resist an invitation to the Google I/O session Voiding Your Warranty: Hacking Glass.

Submission + - Violent Galactic Clash May Solve Cosmic Mystery (

astroengine writes: The mother of all cosmic collisions has been spotted between two galaxies containing a total of 400 billion stars, igniting the birth of 2,000 new stars per year! This incredible event was first spotted by the recently-retired Hershel infrared space observatory, a mission managed by the European Space Agency. This violent discovery isn't just awesome to look at, it could also help explain how massive, red elliptical galaxies evolved in the early universe.

Submission + - Will Robots Take Over the Data Center? (

1sockchuck writes: Robotics are beginning to be integrated into data center management, creating the potential for a fully automated, robot-driven data center. What might a robot-controlled "lights-out" data center look like? The racks will be taller, as robotics systems can reach higher to manage servers. Robotic equipment would be mounted on rails that allow them to find and move hardware. Early examples of this are seen in tape libraries, but the concepts could be applied to other data center equipment. Amazon and Google are said to be among those looking at ways to create a fully automated data center. AOL says it has already built an unmanned data center. Data Center Knowledge looks at the challenges and opportunities in robot-controlled data centers, including how staff roles would evolve.

Submission + - Higgs Boson Discovery: The Full CERN Statement ( 1

asavin writes: The latest results from CERN experiments observed a particle consistent with long-sought Higgs Boson.

"We observe in our data clear signs of a new particle, at the level of 5 sigma, in the mass region around 126 GeV. The outstanding performance of the LHC and ATLAS and the huge efforts of many people have brought us to this exciting stage," said ATLAS experiment spokesperson Fabiola Gianotti, "but a little more time is needed to prepare these results for publication."

Comment Re:I thought these were pretty much known already (Score 2) 414

Solving that differential equation analytically (as opposed to numerically) will yield an analytic solution to this problem. Also, accounting for the initial conditions is part of solving an equation. A differential equation itself does not give an answer (neither exact or approximate) - you have to solve it using some method (which can be exact, approximate or numerical).

The right hand side of the closed form solution might also include integration (eg if there are some integrals which cannot be represented using elementary functions), infinite series etc and it would still count as an analytic solution (although I suppose it depends on the exact definition of "analytic solution"), even though evaluating it for some particular point in time (in this particular case) can not be done exactly (you would have to numerically evaluate the integrals etc).

Granted, as has been pointed out, GP has not provided us with an analytic solution to that equation.


Submission + - Chemical reaction eating CO2, producing energy (

MistrX writes: "While there are plenty of ways to make carbon-based products from CO2, these methods usually require a lot of energy because the CO2 molecules are so stable. If the energy comes from the burning of fossil fuels, then the net result will be more CO2 entering the atmosphere. Now a material scientist at Michigan Technological University has discovered a chemical reaction that not only soaks up CO2, but also produces useful chemicals along with significant amounts of energy."


Submission + - SpaceX's Falcon9 Successfully Reaches Orbit (

terrymaster69 writes: After an aborted launch attempt last week, SpaceX successfully launched its Falcon9 rocket Tuesday at 3:44 am EST. SpaceX's founder Elon Musk tweeted: "Falcon flew perfectly!! Dragon in orbit, comm locked and solar arrays active!! Feels like a giant weight just came off my back :)" The Dragon capsule is scheduled to dock with the ISS on May 25th.

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